Adding upstream version 2:8.1.0875.upstream/2%8.1.0875upstream

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 6936 insertions, 0 deletions

diff --git a/src/mbyte.c b/src/mbyte.c
new file mode 100644
index 0000000..aa10d5e
--- /dev/null
+++ b/src/mbyte.c
@@ -0,0 +1,6936 @@
+/* vi:set ts=8 sts=4 sw=4 noet:
+ *
+ * VIM - Vi IMproved	by Bram Moolenaar
+ * Multibyte extensions partly by Sung-Hoon Baek
+ *
+ * Do ":help uganda"  in Vim to read copying and usage conditions.
+ * Do ":help credits" in Vim to see a list of people who contributed.
+ * See README.txt for an overview of the Vim source code.
+ */
+/*
+ * mbyte.c: Code specifically for handling multi-byte characters.
+ *
+ * The encoding used in the core is set with 'encoding'.  When 'encoding' is
+ * changed, the following four variables are set (for speed).
+ * Currently these types of character encodings are supported:
+ *
+ * "enc_dbcs"	    When non-zero it tells the type of double byte character
+ *		    encoding (Chinese, Korean, Japanese, etc.).
+ *		    The cell width on the display is equal to the number of
+ *		    bytes.  (exception: DBCS_JPNU with first byte 0x8e)
+ *		    Recognizing the first or second byte is difficult, it
+ *		    requires checking a byte sequence from the start.
+ * "enc_utf8"	    When TRUE use Unicode characters in UTF-8 encoding.
+ *		    The cell width on the display needs to be determined from
+ *		    the character value.
+ *		    Recognizing bytes is easy: 0xxx.xxxx is a single-byte
+ *		    char, 10xx.xxxx is a trailing byte, 11xx.xxxx is a leading
+ *		    byte of a multi-byte character.
+ *		    To make things complicated, up to six composing characters
+ *		    are allowed.  These are drawn on top of the first char.
+ *		    For most editing the sequence of bytes with composing
+ *		    characters included is considered to be one character.
+ * "enc_unicode"    When 2 use 16-bit Unicode characters (or UTF-16).
+ *		    When 4 use 32-but Unicode characters.
+ *		    Internally characters are stored in UTF-8 encoding to
+ *		    avoid NUL bytes.  Conversion happens when doing I/O.
+ *		    "enc_utf8" will also be TRUE.
+ *
+ * "has_mbyte" is set when "enc_dbcs" or "enc_utf8" is non-zero.
+ *
+ * If none of these is TRUE, 8-bit bytes are used for a character.  The
+ * encoding isn't currently specified (TODO).
+ *
+ * 'encoding' specifies the encoding used in the core.  This is in registers,
+ * text manipulation, buffers, etc.  Conversion has to be done when characters
+ * in another encoding are received or send:
+ *
+ *		       clipboard
+ *			   ^
+ *			   | (2)
+ *			   V
+ *		   +---------------+
+ *	      (1)  |		   | (3)
+ *  keyboard ----->|	 core	   |-----> display
+ *		   |		   |
+ *		   +---------------+
+ *			   ^
+ *			   | (4)
+ *			   V
+ *			 file
+ *
+ * (1) Typed characters arrive in the current locale.  Conversion is to be
+ *     done when 'encoding' is different from 'termencoding'.
+ * (2) Text will be made available with the encoding specified with
+ *     'encoding'.  If this is not sufficient, system-specific conversion
+ *     might be required.
+ * (3) For the GUI the correct font must be selected, no conversion done.
+ *     Otherwise, conversion is to be done when 'encoding' differs from
+ *     'termencoding'.  (Different in the GTK+ 2 port -- 'termencoding'
+ *     is always used for both input and output and must always be set to
+ *     "utf-8".  gui_mch_init() does this automatically.)
+ * (4) The encoding of the file is specified with 'fileencoding'.  Conversion
+ *     is to be done when it's different from 'encoding'.
+ *
+ * The viminfo file is a special case: Only text is converted, not file names.
+ * Vim scripts may contain an ":encoding" command.  This has an effect for
+ * some commands, like ":menutrans"
+ */
+
+#include "vim.h"
+
+#ifdef WIN32UNIX
+# ifndef WIN32_LEAN_AND_MEAN
+#  define WIN32_LEAN_AND_MEAN
+# endif
+# if defined(FEAT_GUI) || defined(FEAT_XCLIPBOARD)
+#  include <X11/Xwindows.h>
+#  define WINBYTE wBYTE
+# else
+#  include <windows.h>
+#  define WINBYTE BYTE
+# endif
+# ifdef WIN32
+#  undef WIN32	    /* Some windows.h define WIN32, we don't want that here. */
+# endif
+#else
+# define WINBYTE BYTE
+#endif
+
+#if (defined(WIN3264) || defined(WIN32UNIX)) && !defined(__MINGW32__)
+# include <winnls.h>
+#endif
+
+#ifdef FEAT_GUI_X11
+# include <X11/Intrinsic.h>
+#endif
+#ifdef X_LOCALE
+# include <X11/Xlocale.h>
+# if !defined(HAVE_MBLEN) && !defined(mblen)
+#  define mblen _Xmblen
+# endif
+#endif
+
+#if defined(FEAT_GUI_GTK) && defined(FEAT_XIM)
+# if GTK_CHECK_VERSION(3,0,0)
+#  include <gdk/gdkkeysyms-compat.h>
+# else
+#  include <gdk/gdkkeysyms.h>
+# endif
+# ifdef WIN3264
+#  include <gdk/gdkwin32.h>
+# else
+#  include <gdk/gdkx.h>
+# endif
+#endif
+
+#ifdef HAVE_WCHAR_H
+# include <wchar.h>
+#endif
+
+#if 0
+/* This has been disabled, because several people reported problems with the
+ * wcwidth() and iswprint() library functions, esp. for Hebrew. */
+# ifdef __STDC_ISO_10646__
+#  define USE_WCHAR_FUNCTIONS
+# endif
+#endif
+
+static int dbcs_char2len(int c);
+static int dbcs_char2bytes(int c, char_u *buf);
+static int dbcs_ptr2len(char_u *p);
+static int dbcs_ptr2len_len(char_u *p, int size);
+static int utf_ptr2cells_len(char_u *p, int size);
+static int dbcs_char2cells(int c);
+static int dbcs_ptr2cells_len(char_u *p, int size);
+static int dbcs_ptr2char(char_u *p);
+
+/*
+ * Lookup table to quickly get the length in bytes of a UTF-8 character from
+ * the first byte of a UTF-8 string.
+ * Bytes which are illegal when used as the first byte have a 1.
+ * The NUL byte has length 1.
+ */
+static char utf8len_tab[256] =
+{
+    1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,
+    1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,
+    1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,
+    1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,
+    1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,
+    1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,
+    2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,
+    3,3,3,3,3,3,3,3,3,3,3,3,3,3,3,3,4,4,4,4,4,4,4,4,5,5,5,5,6,6,1,1,
+};
+
+/*
+ * Like utf8len_tab above, but using a zero for illegal lead bytes.
+ */
+static char utf8len_tab_zero[256] =
+{
+    1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,
+    1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,
+    1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,
+    1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,
+    0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,
+    0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,
+    2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,
+    3,3,3,3,3,3,3,3,3,3,3,3,3,3,3,3,4,4,4,4,4,4,4,4,5,5,5,5,6,6,0,0,
+};
+
+/*
+ * XIM often causes trouble.  Define XIM_DEBUG to get a log of XIM callbacks
+ * in the "xim.log" file.
+ */
+/* #define XIM_DEBUG */
+#ifdef XIM_DEBUG
+    static void
+xim_log(char *s, ...)
+{
+    va_list arglist;
+    static FILE *fd = NULL;
+
+    if (fd == (FILE *)-1)
+	return;
+    if (fd == NULL)
+    {
+	fd = mch_fopen("xim.log", "w");
+	if (fd == NULL)
+	{
+	    emsg("Cannot open xim.log");
+	    fd = (FILE *)-1;
+	    return;
+	}
+    }
+
+    va_start(arglist, s);
+    vfprintf(fd, s, arglist);
+    va_end(arglist);
+}
+#endif
+
+
+/*
+ * Canonical encoding names and their properties.
+ * "iso-8859-n" is handled by enc_canonize() directly.
+ */
+static struct
+{   char *name;		int prop;		int codepage;}
+enc_canon_table[] =
+{
+#define IDX_LATIN_1	0
+    {"latin1",		ENC_8BIT + ENC_LATIN1,	1252},
+#define IDX_ISO_2	1
+    {"iso-8859-2",	ENC_8BIT,		0},
+#define IDX_ISO_3	2
+    {"iso-8859-3",	ENC_8BIT,		0},
+#define IDX_ISO_4	3
+    {"iso-8859-4",	ENC_8BIT,		0},
+#define IDX_ISO_5	4
+    {"iso-8859-5",	ENC_8BIT,		0},
+#define IDX_ISO_6	5
+    {"iso-8859-6",	ENC_8BIT,		0},
+#define IDX_ISO_7	6
+    {"iso-8859-7",	ENC_8BIT,		0},
+#define IDX_ISO_8	7
+    {"iso-8859-8",	ENC_8BIT,		0},
+#define IDX_ISO_9	8
+    {"iso-8859-9",	ENC_8BIT,		0},
+#define IDX_ISO_10	9
+    {"iso-8859-10",	ENC_8BIT,		0},
+#define IDX_ISO_11	10
+    {"iso-8859-11",	ENC_8BIT,		0},
+#define IDX_ISO_13	11
+    {"iso-8859-13",	ENC_8BIT,		0},
+#define IDX_ISO_14	12
+    {"iso-8859-14",	ENC_8BIT,		0},
+#define IDX_ISO_15	13
+    {"iso-8859-15",	ENC_8BIT + ENC_LATIN9,	0},
+#define IDX_KOI8_R	14
+    {"koi8-r",		ENC_8BIT,		0},
+#define IDX_KOI8_U	15
+    {"koi8-u",		ENC_8BIT,		0},
+#define IDX_UTF8	16
+    {"utf-8",		ENC_UNICODE,		0},
+#define IDX_UCS2	17
+    {"ucs-2",		ENC_UNICODE + ENC_ENDIAN_B + ENC_2BYTE, 0},
+#define IDX_UCS2LE	18
+    {"ucs-2le",		ENC_UNICODE + ENC_ENDIAN_L + ENC_2BYTE, 0},
+#define IDX_UTF16	19
+    {"utf-16",		ENC_UNICODE + ENC_ENDIAN_B + ENC_2WORD, 0},
+#define IDX_UTF16LE	20
+    {"utf-16le",	ENC_UNICODE + ENC_ENDIAN_L + ENC_2WORD, 0},
+#define IDX_UCS4	21
+    {"ucs-4",		ENC_UNICODE + ENC_ENDIAN_B + ENC_4BYTE, 0},
+#define IDX_UCS4LE	22
+    {"ucs-4le",		ENC_UNICODE + ENC_ENDIAN_L + ENC_4BYTE, 0},
+
+    /* For debugging DBCS encoding on Unix. */
+#define IDX_DEBUG	23
+    {"debug",		ENC_DBCS,		DBCS_DEBUG},
+#define IDX_EUC_JP	24
+    {"euc-jp",		ENC_DBCS,		DBCS_JPNU},
+#define IDX_SJIS	25
+    {"sjis",		ENC_DBCS,		DBCS_JPN},
+#define IDX_EUC_KR	26
+    {"euc-kr",		ENC_DBCS,		DBCS_KORU},
+#define IDX_EUC_CN	27
+    {"euc-cn",		ENC_DBCS,		DBCS_CHSU},
+#define IDX_EUC_TW	28
+    {"euc-tw",		ENC_DBCS,		DBCS_CHTU},
+#define IDX_BIG5	29
+    {"big5",		ENC_DBCS,		DBCS_CHT},
+
+    /* MS-DOS and MS-Windows codepages are included here, so that they can be
+     * used on Unix too.  Most of them are similar to ISO-8859 encodings, but
+     * not exactly the same. */
+#define IDX_CP437	30
+    {"cp437",		ENC_8BIT,		437}, /* like iso-8859-1 */
+#define IDX_CP737	31
+    {"cp737",		ENC_8BIT,		737}, /* like iso-8859-7 */
+#define IDX_CP775	32
+    {"cp775",		ENC_8BIT,		775}, /* Baltic */
+#define IDX_CP850	33
+    {"cp850",		ENC_8BIT,		850}, /* like iso-8859-4 */
+#define IDX_CP852	34
+    {"cp852",		ENC_8BIT,		852}, /* like iso-8859-1 */
+#define IDX_CP855	35
+    {"cp855",		ENC_8BIT,		855}, /* like iso-8859-2 */
+#define IDX_CP857	36
+    {"cp857",		ENC_8BIT,		857}, /* like iso-8859-5 */
+#define IDX_CP860	37
+    {"cp860",		ENC_8BIT,		860}, /* like iso-8859-9 */
+#define IDX_CP861	38
+    {"cp861",		ENC_8BIT,		861}, /* like iso-8859-1 */
+#define IDX_CP862	39
+    {"cp862",		ENC_8BIT,		862}, /* like iso-8859-1 */
+#define IDX_CP863	40
+    {"cp863",		ENC_8BIT,		863}, /* like iso-8859-8 */
+#define IDX_CP865	41
+    {"cp865",		ENC_8BIT,		865}, /* like iso-8859-1 */
+#define IDX_CP866	42
+    {"cp866",		ENC_8BIT,		866}, /* like iso-8859-5 */
+#define IDX_CP869	43
+    {"cp869",		ENC_8BIT,		869}, /* like iso-8859-7 */
+#define IDX_CP874	44
+    {"cp874",		ENC_8BIT,		874}, /* Thai */
+#define IDX_CP932	45
+    {"cp932",		ENC_DBCS,		DBCS_JPN},
+#define IDX_CP936	46
+    {"cp936",		ENC_DBCS,		DBCS_CHS},
+#define IDX_CP949	47
+    {"cp949",		ENC_DBCS,		DBCS_KOR},
+#define IDX_CP950	48
+    {"cp950",		ENC_DBCS,		DBCS_CHT},
+#define IDX_CP1250	49
+    {"cp1250",		ENC_8BIT,		1250}, /* Czech, Polish, etc. */
+#define IDX_CP1251	50
+    {"cp1251",		ENC_8BIT,		1251}, /* Cyrillic */
+    /* cp1252 is considered to be equal to latin1 */
+#define IDX_CP1253	51
+    {"cp1253",		ENC_8BIT,		1253}, /* Greek */
+#define IDX_CP1254	52
+    {"cp1254",		ENC_8BIT,		1254}, /* Turkish */
+#define IDX_CP1255	53
+    {"cp1255",		ENC_8BIT,		1255}, /* Hebrew */
+#define IDX_CP1256	54
+    {"cp1256",		ENC_8BIT,		1256}, /* Arabic */
+#define IDX_CP1257	55
+    {"cp1257",		ENC_8BIT,		1257}, /* Baltic */
+#define IDX_CP1258	56
+    {"cp1258",		ENC_8BIT,		1258}, /* Vietnamese */
+
+#define IDX_MACROMAN	57
+    {"macroman",	ENC_8BIT + ENC_MACROMAN, 0},	/* Mac OS */
+#define IDX_DECMCS	58
+    {"dec-mcs",		ENC_8BIT,		0},	/* DEC MCS */
+#define IDX_HPROMAN8	59
+    {"hp-roman8",	ENC_8BIT,		0},	/* HP Roman8 */
+#define IDX_COUNT	60
+};
+
+/*
+ * Aliases for encoding names.
+ */
+static struct
+{   char *name;		int canon;}
+enc_alias_table[] =
+{
+    {"ansi",		IDX_LATIN_1},
+    {"iso-8859-1",	IDX_LATIN_1},
+    {"latin2",		IDX_ISO_2},
+    {"latin3",		IDX_ISO_3},
+    {"latin4",		IDX_ISO_4},
+    {"cyrillic",	IDX_ISO_5},
+    {"arabic",		IDX_ISO_6},
+    {"greek",		IDX_ISO_7},
+#ifdef WIN3264
+    {"hebrew",		IDX_CP1255},
+#else
+    {"hebrew",		IDX_ISO_8},
+#endif
+    {"latin5",		IDX_ISO_9},
+    {"turkish",		IDX_ISO_9}, /* ? */
+    {"latin6",		IDX_ISO_10},
+    {"nordic",		IDX_ISO_10}, /* ? */
+    {"thai",		IDX_ISO_11}, /* ? */
+    {"latin7",		IDX_ISO_13},
+    {"latin8",		IDX_ISO_14},
+    {"latin9",		IDX_ISO_15},
+    {"utf8",		IDX_UTF8},
+    {"unicode",		IDX_UCS2},
+    {"ucs2",		IDX_UCS2},
+    {"ucs2be",		IDX_UCS2},
+    {"ucs-2be",		IDX_UCS2},
+    {"ucs2le",		IDX_UCS2LE},
+    {"utf16",		IDX_UTF16},
+    {"utf16be",		IDX_UTF16},
+    {"utf-16be",	IDX_UTF16},
+    {"utf16le",		IDX_UTF16LE},
+    {"ucs4",		IDX_UCS4},
+    {"ucs4be",		IDX_UCS4},
+    {"ucs-4be",		IDX_UCS4},
+    {"ucs4le",		IDX_UCS4LE},
+    {"utf32",		IDX_UCS4},
+    {"utf-32",		IDX_UCS4},
+    {"utf32be",		IDX_UCS4},
+    {"utf-32be",	IDX_UCS4},
+    {"utf32le",		IDX_UCS4LE},
+    {"utf-32le",	IDX_UCS4LE},
+    {"932",		IDX_CP932},
+    {"949",		IDX_CP949},
+    {"936",		IDX_CP936},
+    {"gbk",		IDX_CP936},
+    {"950",		IDX_CP950},
+    {"eucjp",		IDX_EUC_JP},
+    {"unix-jis",	IDX_EUC_JP},
+    {"ujis",		IDX_EUC_JP},
+    {"shift-jis",	IDX_SJIS},
+    {"pck",		IDX_SJIS},	/* Sun: PCK */
+    {"euckr",		IDX_EUC_KR},
+    {"5601",		IDX_EUC_KR},	/* Sun: KS C 5601 */
+    {"euccn",		IDX_EUC_CN},
+    {"gb2312",		IDX_EUC_CN},
+    {"euctw",		IDX_EUC_TW},
+#if defined(WIN3264) || defined(WIN32UNIX) || defined(MACOS_X)
+    {"japan",		IDX_CP932},
+    {"korea",		IDX_CP949},
+    {"prc",		IDX_CP936},
+    {"chinese",		IDX_CP936},
+    {"taiwan",		IDX_CP950},
+    {"big5",		IDX_CP950},
+#else
+    {"japan",		IDX_EUC_JP},
+    {"korea",		IDX_EUC_KR},
+    {"prc",		IDX_EUC_CN},
+    {"chinese",		IDX_EUC_CN},
+    {"taiwan",		IDX_EUC_TW},
+    {"cp950",		IDX_BIG5},
+    {"950",		IDX_BIG5},
+#endif
+    {"mac",		IDX_MACROMAN},
+    {"mac-roman",	IDX_MACROMAN},
+    {NULL,		0}
+};
+
+#ifndef CP_UTF8
+# define CP_UTF8 65001	/* magic number from winnls.h */
+#endif
+
+/*
+ * Find encoding "name" in the list of canonical encoding names.
+ * Returns -1 if not found.
+ */
+    static int
+enc_canon_search(char_u *name)
+{
+    int		i;
+
+    for (i = 0; i < IDX_COUNT; ++i)
+	if (STRCMP(name, enc_canon_table[i].name) == 0)
+	    return i;
+    return -1;
+}
+
+
+/*
+ * Find canonical encoding "name" in the list and return its properties.
+ * Returns 0 if not found.
+ */
+    int
+enc_canon_props(char_u *name)
+{
+    int		i;
+
+    i = enc_canon_search(name);
+    if (i >= 0)
+	return enc_canon_table[i].prop;
+#ifdef WIN3264
+    if (name[0] == 'c' && name[1] == 'p' && VIM_ISDIGIT(name[2]))
+    {
+	CPINFO	cpinfo;
+
+	/* Get info on this codepage to find out what it is. */
+	if (GetCPInfo(atoi((char *)name + 2), &cpinfo) != 0)
+	{
+	    if (cpinfo.MaxCharSize == 1) /* some single-byte encoding */
+		return ENC_8BIT;
+	    if (cpinfo.MaxCharSize == 2
+		    && (cpinfo.LeadByte[0] != 0 || cpinfo.LeadByte[1] != 0))
+		/* must be a DBCS encoding */
+		return ENC_DBCS;
+	}
+	return 0;
+    }
+#endif
+    if (STRNCMP(name, "2byte-", 6) == 0)
+	return ENC_DBCS;
+    if (STRNCMP(name, "8bit-", 5) == 0 || STRNCMP(name, "iso-8859-", 9) == 0)
+	return ENC_8BIT;
+    return 0;
+}
+
+/*
+ * Set up for using multi-byte characters.
+ * Called in three cases:
+ * - by main() to initialize (p_enc == NULL)
+ * - by set_init_1() after 'encoding' was set to its default.
+ * - by do_set() when 'encoding' has been set.
+ * p_enc must have been passed through enc_canonize() already.
+ * Sets the "enc_unicode", "enc_utf8", "enc_dbcs" and "has_mbyte" flags.
+ * Fills mb_bytelen_tab[] and returns NULL when there are no problems.
+ * When there is something wrong: Returns an error message and doesn't change
+ * anything.
+ */
+    char *
+mb_init(void)
+{
+    int		i;
+    int		idx;
+    int		n;
+    int		enc_dbcs_new = 0;
+#if defined(USE_ICONV) && !defined(WIN3264) && !defined(WIN32UNIX) \
+	&& !defined(MACOS_CONVERT)
+# define LEN_FROM_CONV
+    vimconv_T	vimconv;
+    char_u	*p;
+#endif
+
+    if (p_enc == NULL)
+    {
+	/* Just starting up: set the whole table to one's. */
+	for (i = 0; i < 256; ++i)
+	    mb_bytelen_tab[i] = 1;
+	input_conv.vc_type = CONV_NONE;
+	input_conv.vc_factor = 1;
+	output_conv.vc_type = CONV_NONE;
+	return NULL;
+    }
+
+#ifdef WIN3264
+    if (p_enc[0] == 'c' && p_enc[1] == 'p' && VIM_ISDIGIT(p_enc[2]))
+    {
+	CPINFO	cpinfo;
+
+	/* Get info on this codepage to find out what it is. */
+	if (GetCPInfo(atoi((char *)p_enc + 2), &cpinfo) != 0)
+	{
+	    if (cpinfo.MaxCharSize == 1)
+	    {
+		/* some single-byte encoding */
+		enc_unicode = 0;
+		enc_utf8 = FALSE;
+	    }
+	    else if (cpinfo.MaxCharSize == 2
+		    && (cpinfo.LeadByte[0] != 0 || cpinfo.LeadByte[1] != 0))
+	    {
+		/* must be a DBCS encoding, check below */
+		enc_dbcs_new = atoi((char *)p_enc + 2);
+	    }
+	    else
+		goto codepage_invalid;
+	}
+	else if (GetLastError() == ERROR_INVALID_PARAMETER)
+	{
+codepage_invalid:
+	    return N_("E543: Not a valid codepage");
+	}
+    }
+#endif
+    else if (STRNCMP(p_enc, "8bit-", 5) == 0
+	    || STRNCMP(p_enc, "iso-8859-", 9) == 0)
+    {
+	/* Accept any "8bit-" or "iso-8859-" name. */
+	enc_unicode = 0;
+	enc_utf8 = FALSE;
+    }
+    else if (STRNCMP(p_enc, "2byte-", 6) == 0)
+    {
+#ifdef WIN3264
+	/* Windows: accept only valid codepage numbers, check below. */
+	if (p_enc[6] != 'c' || p_enc[7] != 'p'
+			      || (enc_dbcs_new = atoi((char *)p_enc + 8)) == 0)
+	    return e_invarg;
+#else
+	/* Unix: accept any "2byte-" name, assume current locale. */
+	enc_dbcs_new = DBCS_2BYTE;
+#endif
+    }
+    else if ((idx = enc_canon_search(p_enc)) >= 0)
+    {
+	i = enc_canon_table[idx].prop;
+	if (i & ENC_UNICODE)
+	{
+	    /* Unicode */
+	    enc_utf8 = TRUE;
+	    if (i & (ENC_2BYTE | ENC_2WORD))
+		enc_unicode = 2;
+	    else if (i & ENC_4BYTE)
+		enc_unicode = 4;
+	    else
+		enc_unicode = 0;
+	}
+	else if (i & ENC_DBCS)
+	{
+	    /* 2byte, handle below */
+	    enc_dbcs_new = enc_canon_table[idx].codepage;
+	}
+	else
+	{
+	    /* Must be 8-bit. */
+	    enc_unicode = 0;
+	    enc_utf8 = FALSE;
+	}
+    }
+    else    /* Don't know what encoding this is, reject it. */
+	return e_invarg;
+
+    if (enc_dbcs_new != 0)
+    {
+#ifdef WIN3264
+	/* Check if the DBCS code page is OK. */
+	if (!IsValidCodePage(enc_dbcs_new))
+	    goto codepage_invalid;
+#endif
+	enc_unicode = 0;
+	enc_utf8 = FALSE;
+    }
+    enc_dbcs = enc_dbcs_new;
+    has_mbyte = (enc_dbcs != 0 || enc_utf8);
+
+#if defined(WIN3264) || defined(FEAT_CYGWIN_WIN32_CLIPBOARD)
+    enc_codepage = encname2codepage(p_enc);
+    enc_latin9 = (STRCMP(p_enc, "iso-8859-15") == 0);
+#endif
+
+    /* Detect an encoding that uses latin1 characters. */
+    enc_latin1like = (enc_utf8 || STRCMP(p_enc, "latin1") == 0
+					|| STRCMP(p_enc, "iso-8859-15") == 0);
+
+    /*
+     * Set the function pointers.
+     */
+    if (enc_utf8)
+    {
+	mb_ptr2len = utfc_ptr2len;
+	mb_ptr2len_len = utfc_ptr2len_len;
+	mb_char2len = utf_char2len;
+	mb_char2bytes = utf_char2bytes;
+	mb_ptr2cells = utf_ptr2cells;
+	mb_ptr2cells_len = utf_ptr2cells_len;
+	mb_char2cells = utf_char2cells;
+	mb_off2cells = utf_off2cells;
+	mb_ptr2char = utf_ptr2char;
+	mb_head_off = utf_head_off;
+    }
+    else if (enc_dbcs != 0)
+    {
+	mb_ptr2len = dbcs_ptr2len;
+	mb_ptr2len_len = dbcs_ptr2len_len;
+	mb_char2len = dbcs_char2len;
+	mb_char2bytes = dbcs_char2bytes;
+	mb_ptr2cells = dbcs_ptr2cells;
+	mb_ptr2cells_len = dbcs_ptr2cells_len;
+	mb_char2cells = dbcs_char2cells;
+	mb_off2cells = dbcs_off2cells;
+	mb_ptr2char = dbcs_ptr2char;
+	mb_head_off = dbcs_head_off;
+    }
+    else
+    {
+	mb_ptr2len = latin_ptr2len;
+	mb_ptr2len_len = latin_ptr2len_len;
+	mb_char2len = latin_char2len;
+	mb_char2bytes = latin_char2bytes;
+	mb_ptr2cells = latin_ptr2cells;
+	mb_ptr2cells_len = latin_ptr2cells_len;
+	mb_char2cells = latin_char2cells;
+	mb_off2cells = latin_off2cells;
+	mb_ptr2char = latin_ptr2char;
+	mb_head_off = latin_head_off;
+    }
+
+    /*
+     * Fill the mb_bytelen_tab[] for MB_BYTE2LEN().
+     */
+#ifdef LEN_FROM_CONV
+    /* When 'encoding' is different from the current locale mblen() won't
+     * work.  Use conversion to "utf-8" instead. */
+    vimconv.vc_type = CONV_NONE;
+    if (enc_dbcs)
+    {
+	p = enc_locale();
+	if (p == NULL || STRCMP(p, p_enc) != 0)
+	{
+	    convert_setup(&vimconv, p_enc, (char_u *)"utf-8");
+	    vimconv.vc_fail = TRUE;
+	}
+	vim_free(p);
+    }
+#endif
+
+    for (i = 0; i < 256; ++i)
+    {
+	/* Our own function to reliably check the length of UTF-8 characters,
+	 * independent of mblen(). */
+	if (enc_utf8)
+	    n = utf8len_tab[i];
+	else if (enc_dbcs == 0)
+	    n = 1;
+	else
+	{
+#if defined(WIN3264) || defined(WIN32UNIX)
+	    /* enc_dbcs is set by setting 'fileencoding'.  It becomes a Windows
+	     * CodePage identifier, which we can pass directly in to Windows
+	     * API */
+	    n = IsDBCSLeadByteEx(enc_dbcs, (WINBYTE)i) ? 2 : 1;
+#else
+# if defined(__amigaos4__) || defined(__ANDROID__) || \
+				   !(defined(HAVE_MBLEN) || defined(X_LOCALE))
+	    /*
+	     * if mblen() is not available, character which MSB is turned on
+	     * are treated as leading byte character. (note : This assumption
+	     * is not always true.)
+	     */
+	    n = (i & 0x80) ? 2 : 1;
+# else
+	    char buf[MB_MAXBYTES + 1];
+
+	    if (i == NUL)	/* just in case mblen() can't handle "" */
+		n = 1;
+	    else
+	    {
+		buf[0] = i;
+		buf[1] = 0;
+#  ifdef LEN_FROM_CONV
+		if (vimconv.vc_type != CONV_NONE)
+		{
+		    /*
+		     * string_convert() should fail when converting the first
+		     * byte of a double-byte character.
+		     */
+		    p = string_convert(&vimconv, (char_u *)buf, NULL);
+		    if (p != NULL)
+		    {
+			vim_free(p);
+			n = 1;
+		    }
+		    else
+			n = 2;
+		}
+		else
+#  endif
+		{
+		    /*
+		     * mblen() should return -1 for invalid (means the leading
+		     * multibyte) character.  However there are some platforms
+		     * where mblen() returns 0 for invalid character.
+		     * Therefore, following condition includes 0.
+		     */
+		    vim_ignored = mblen(NULL, 0);  // First reset the state.
+		    if (mblen(buf, (size_t)1) <= 0)
+			n = 2;
+		    else
+			n = 1;
+		}
+	    }
+# endif
+#endif
+	}
+
+	mb_bytelen_tab[i] = n;
+    }
+
+#ifdef LEN_FROM_CONV
+    convert_setup(&vimconv, NULL, NULL);
+#endif
+
+    /* The cell width depends on the type of multi-byte characters. */
+    (void)init_chartab();
+
+    /* When enc_utf8 is set or reset, (de)allocate ScreenLinesUC[] */
+    screenalloc(FALSE);
+
+    /* When using Unicode, set default for 'fileencodings'. */
+    if (enc_utf8 && !option_was_set((char_u *)"fencs"))
+	set_string_option_direct((char_u *)"fencs", -1,
+		       (char_u *)"ucs-bom,utf-8,default,latin1", OPT_FREE, 0);
+
+#if defined(HAVE_BIND_TEXTDOMAIN_CODESET) && defined(FEAT_GETTEXT)
+    /* GNU gettext 0.10.37 supports this feature: set the codeset used for
+     * translated messages independently from the current locale. */
+    (void)bind_textdomain_codeset(VIMPACKAGE,
+					  enc_utf8 ? "utf-8" : (char *)p_enc);
+#endif
+
+#ifdef WIN32
+    /* When changing 'encoding' while starting up, then convert the command
+     * line arguments from the active codepage to 'encoding'. */
+    if (starting != 0)
+	fix_arg_enc();
+#endif
+
+    /* Fire an autocommand to let people do custom font setup. This must be
+     * after Vim has been setup for the new encoding. */
+    apply_autocmds(EVENT_ENCODINGCHANGED, NULL, (char_u *)"", FALSE, curbuf);
+
+#ifdef FEAT_SPELL
+    /* Need to reload spell dictionaries */
+    spell_reload();
+#endif
+
+    return NULL;
+}
+
+/*
+ * Return the size of the BOM for the current buffer:
+ * 0 - no BOM
+ * 2 - UCS-2 or UTF-16 BOM
+ * 4 - UCS-4 BOM
+ * 3 - UTF-8 BOM
+ */
+    int
+bomb_size(void)
+{
+    int n = 0;
+
+    if (curbuf->b_p_bomb && !curbuf->b_p_bin)
+    {
+	if (*curbuf->b_p_fenc == NUL)
+	{
+	    if (enc_utf8)
+	    {
+		if (enc_unicode != 0)
+		    n = enc_unicode;
+		else
+		    n = 3;
+	    }
+	}
+	else if (STRCMP(curbuf->b_p_fenc, "utf-8") == 0)
+	    n = 3;
+	else if (STRNCMP(curbuf->b_p_fenc, "ucs-2", 5) == 0
+		|| STRNCMP(curbuf->b_p_fenc, "utf-16", 6) == 0)
+	    n = 2;
+	else if (STRNCMP(curbuf->b_p_fenc, "ucs-4", 5) == 0)
+	    n = 4;
+    }
+    return n;
+}
+
+#if defined(FEAT_QUICKFIX) || defined(PROTO)
+/*
+ * Remove all BOM from "s" by moving remaining text.
+ */
+    void
+remove_bom(char_u *s)
+{
+    if (enc_utf8)
+    {
+	char_u *p = s;
+
+	while ((p = vim_strbyte(p, 0xef)) != NULL)
+	{
+	    if (p[1] == 0xbb && p[2] == 0xbf)
+		STRMOVE(p, p + 3);
+	    else
+		++p;
+	}
+    }
+}
+#endif
+
+/*
+ * Get class of pointer:
+ * 0 for blank or NUL
+ * 1 for punctuation
+ * 2 for an (ASCII) word character
+ * >2 for other word characters
+ */
+    int
+mb_get_class(char_u *p)
+{
+    return mb_get_class_buf(p, curbuf);
+}
+
+    int
+mb_get_class_buf(char_u *p, buf_T *buf)
+{
+    if (MB_BYTE2LEN(p[0]) == 1)
+    {
+	if (p[0] == NUL || VIM_ISWHITE(p[0]))
+	    return 0;
+	if (vim_iswordc_buf(p[0], buf))
+	    return 2;
+	return 1;
+    }
+    if (enc_dbcs != 0 && p[0] != NUL && p[1] != NUL)
+	return dbcs_class(p[0], p[1]);
+    if (enc_utf8)
+	return utf_class_buf(utf_ptr2char(p), buf);
+    return 0;
+}
+
+/*
+ * Get class of a double-byte character.  This always returns 3 or bigger.
+ * TODO: Should return 1 for punctuation.
+ */
+    int
+dbcs_class(unsigned lead, unsigned trail)
+{
+    switch (enc_dbcs)
+    {
+	/* please add classify routine for your language in here */
+
+	case DBCS_JPNU:	/* ? */
+	case DBCS_JPN:
+	    {
+		/* JIS code classification */
+		unsigned char lb = lead;
+		unsigned char tb = trail;
+
+		/* convert process code to JIS */
+# if defined(WIN3264) || defined(WIN32UNIX) || defined(MACOS_X)
+		/* process code is SJIS */
+		if (lb <= 0x9f)
+		    lb = (lb - 0x81) * 2 + 0x21;
+		else
+		    lb = (lb - 0xc1) * 2 + 0x21;
+		if (tb <= 0x7e)
+		    tb -= 0x1f;
+		else if (tb <= 0x9e)
+		    tb -= 0x20;
+		else
+		{
+		    tb -= 0x7e;
+		    lb += 1;
+		}
+# else
+		/*
+		 * XXX: Code page identification can not use with all
+		 *	    system! So, some other encoding information
+		 *	    will be needed.
+		 *	    In japanese: SJIS,EUC,UNICODE,(JIS)
+		 *	    Note that JIS-code system don't use as
+		 *	    process code in most system because it uses
+		 *	    escape sequences(JIS is context depend encoding).
+		 */
+		/* assume process code is JAPANESE-EUC */
+		lb &= 0x7f;
+		tb &= 0x7f;
+# endif
+		/* exceptions */
+		switch (lb << 8 | tb)
+		{
+		    case 0x2121: /* ZENKAKU space */
+			return 0;
+		    case 0x2122: /* TOU-TEN (Japanese comma) */
+		    case 0x2123: /* KU-TEN (Japanese period) */
+		    case 0x2124: /* ZENKAKU comma */
+		    case 0x2125: /* ZENKAKU period */
+			return 1;
+		    case 0x213c: /* prolongedsound handled as KATAKANA */
+			return 13;
+		}
+		/* sieved by KU code */
+		switch (lb)
+		{
+		    case 0x21:
+		    case 0x22:
+			/* special symbols */
+			return 10;
+		    case 0x23:
+			/* alpha-numeric */
+			return 11;
+		    case 0x24:
+			/* hiragana */
+			return 12;
+		    case 0x25:
+			/* katakana */
+			return 13;
+		    case 0x26:
+			/* greek */
+			return 14;
+		    case 0x27:
+			/* russian */
+			return 15;
+		    case 0x28:
+			/* lines */
+			return 16;
+		    default:
+			/* kanji */
+			return 17;
+		}
+	    }
+
+	case DBCS_KORU:	/* ? */
+	case DBCS_KOR:
+	    {
+		/* KS code classification */
+		unsigned char c1 = lead;
+		unsigned char c2 = trail;
+
+		/*
+		 * 20 : Hangul
+		 * 21 : Hanja
+		 * 22 : Symbols
+		 * 23 : Alpha-numeric/Roman Letter (Full width)
+		 * 24 : Hangul Letter(Alphabet)
+		 * 25 : Roman Numeral/Greek Letter
+		 * 26 : Box Drawings
+		 * 27 : Unit Symbols
+		 * 28 : Circled/Parenthesized Letter
+		 * 29 : Hiragana/Katakana
+		 * 30 : Cyrillic Letter
+		 */
+
+		if (c1 >= 0xB0 && c1 <= 0xC8)
+		    /* Hangul */
+		    return 20;
+#if defined(WIN3264) || defined(WIN32UNIX)
+		else if (c1 <= 0xA0 || c2 <= 0xA0)
+		    /* Extended Hangul Region : MS UHC(Unified Hangul Code) */
+		    /* c1: 0x81-0xA0 with c2: 0x41-0x5A, 0x61-0x7A, 0x81-0xFE
+		     * c1: 0xA1-0xC6 with c2: 0x41-0x5A, 0x61-0x7A, 0x81-0xA0
+		     */
+		    return 20;
+#endif
+
+		else if (c1 >= 0xCA && c1 <= 0xFD)
+		    /* Hanja */
+		    return 21;
+		else switch (c1)
+		{
+		    case 0xA1:
+		    case 0xA2:
+			/* Symbols */
+			return 22;
+		    case 0xA3:
+			/* Alpha-numeric */
+			return 23;
+		    case 0xA4:
+			/* Hangul Letter(Alphabet) */
+			return 24;
+		    case 0xA5:
+			/* Roman Numeral/Greek Letter */
+			return 25;
+		    case 0xA6:
+			/* Box Drawings */
+			return 26;
+		    case 0xA7:
+			/* Unit Symbols */
+			return 27;
+		    case 0xA8:
+		    case 0xA9:
+			if (c2 <= 0xAF)
+			    return 25;  /* Roman Letter */
+			else if (c2 >= 0xF6)
+			    return 22;  /* Symbols */
+			else
+			    /* Circled/Parenthesized Letter */
+			    return 28;
+		    case 0xAA:
+		    case 0xAB:
+			/* Hiragana/Katakana */
+			return 29;
+		    case 0xAC:
+			/* Cyrillic Letter */
+			return 30;
+		}
+	    }
+	default:
+	    break;
+    }
+    return 3;
+}
+
+/*
+ * mb_char2len() function pointer.
+ * Return length in bytes of character "c".
+ * Returns 1 for a single-byte character.
+ */
+    int
+latin_char2len(int c UNUSED)
+{
+    return 1;
+}
+
+    static int
+dbcs_char2len(
+    int		c)
+{
+    if (c >= 0x100)
+	return 2;
+    return 1;
+}
+
+/*
+ * mb_char2bytes() function pointer.
+ * Convert a character to its bytes.
+ * Returns the length in bytes.
+ */
+    int
+latin_char2bytes(int c, char_u *buf)
+{
+    buf[0] = c;
+    return 1;
+}
+
+    static int
+dbcs_char2bytes(int c, char_u *buf)
+{
+    if (c >= 0x100)
+    {
+	buf[0] = (unsigned)c >> 8;
+	buf[1] = c;
+	/* Never use a NUL byte, it causes lots of trouble.  It's an invalid
+	 * character anyway. */
+	if (buf[1] == NUL)
+	    buf[1] = '\n';
+	return 2;
+    }
+    buf[0] = c;
+    return 1;
+}
+
+/*
+ * mb_ptr2len() function pointer.
+ * Get byte length of character at "*p" but stop at a NUL.
+ * For UTF-8 this includes following composing characters.
+ * Returns 0 when *p is NUL.
+ */
+    int
+latin_ptr2len(char_u *p)
+{
+ return MB_BYTE2LEN(*p);
+}
+
+    static int
+dbcs_ptr2len(
+    char_u	*p)
+{
+    int		len;
+
+    /* Check if second byte is not missing. */
+    len = MB_BYTE2LEN(*p);
+    if (len == 2 && p[1] == NUL)
+	len = 1;
+    return len;
+}
+
+/*
+ * mb_ptr2len_len() function pointer.
+ * Like mb_ptr2len(), but limit to read "size" bytes.
+ * Returns 0 for an empty string.
+ * Returns 1 for an illegal char or an incomplete byte sequence.
+ */
+    int
+latin_ptr2len_len(char_u *p, int size)
+{
+    if (size < 1 || *p == NUL)
+	return 0;
+    return 1;
+}
+
+    static int
+dbcs_ptr2len_len(char_u *p, int size)
+{
+    int		len;
+
+    if (size < 1 || *p == NUL)
+	return 0;
+    if (size == 1)
+	return 1;
+    /* Check that second byte is not missing. */
+    len = MB_BYTE2LEN(*p);
+    if (len == 2 && p[1] == NUL)
+	len = 1;
+    return len;
+}
+
+struct interval
+{
+    long first;
+    long last;
+};
+
+/*
+ * Return TRUE if "c" is in "table[size / sizeof(struct interval)]".
+ */
+    static int
+intable(struct interval *table, size_t size, int c)
+{
+    int mid, bot, top;
+
+    /* first quick check for Latin1 etc. characters */
+    if (c < table[0].first)
+	return FALSE;
+
+    /* binary search in table */
+    bot = 0;
+    top = (int)(size / sizeof(struct interval) - 1);
+    while (top >= bot)
+    {
+	mid = (bot + top) / 2;
+	if (table[mid].last < c)
+	    bot = mid + 1;
+	else if (table[mid].first > c)
+	    top = mid - 1;
+	else
+	    return TRUE;
+    }
+    return FALSE;
+}
+
+/* Sorted list of non-overlapping intervals of East Asian Ambiguous
+ * characters, generated with ../runtime/tools/unicode.vim. */
+static struct interval ambiguous[] =
+{
+    {0x00a1, 0x00a1},
+    {0x00a4, 0x00a4},
+    {0x00a7, 0x00a8},
+    {0x00aa, 0x00aa},
+    {0x00ad, 0x00ae},
+    {0x00b0, 0x00b4},
+    {0x00b6, 0x00ba},
+    {0x00bc, 0x00bf},
+    {0x00c6, 0x00c6},
+    {0x00d0, 0x00d0},
+    {0x00d7, 0x00d8},
+    {0x00de, 0x00e1},
+    {0x00e6, 0x00e6},
+    {0x00e8, 0x00ea},
+    {0x00ec, 0x00ed},
+    {0x00f0, 0x00f0},
+    {0x00f2, 0x00f3},
+    {0x00f7, 0x00fa},
+    {0x00fc, 0x00fc},
+    {0x00fe, 0x00fe},
+    {0x0101, 0x0101},
+    {0x0111, 0x0111},
+    {0x0113, 0x0113},
+    {0x011b, 0x011b},
+    {0x0126, 0x0127},
+    {0x012b, 0x012b},
+    {0x0131, 0x0133},
+    {0x0138, 0x0138},
+    {0x013f, 0x0142},
+    {0x0144, 0x0144},
+    {0x0148, 0x014b},
+    {0x014d, 0x014d},
+    {0x0152, 0x0153},
+    {0x0166, 0x0167},
+    {0x016b, 0x016b},
+    {0x01ce, 0x01ce},
+    {0x01d0, 0x01d0},
+    {0x01d2, 0x01d2},
+    {0x01d4, 0x01d4},
+    {0x01d6, 0x01d6},
+    {0x01d8, 0x01d8},
+    {0x01da, 0x01da},
+    {0x01dc, 0x01dc},
+    {0x0251, 0x0251},
+    {0x0261, 0x0261},
+    {0x02c4, 0x02c4},
+    {0x02c7, 0x02c7},
+    {0x02c9, 0x02cb},
+    {0x02cd, 0x02cd},
+    {0x02d0, 0x02d0},
+    {0x02d8, 0x02db},
+    {0x02dd, 0x02dd},
+    {0x02df, 0x02df},
+    {0x0300, 0x036f},
+    {0x0391, 0x03a1},
+    {0x03a3, 0x03a9},
+    {0x03b1, 0x03c1},
+    {0x03c3, 0x03c9},
+    {0x0401, 0x0401},
+    {0x0410, 0x044f},
+    {0x0451, 0x0451},
+    {0x2010, 0x2010},
+    {0x2013, 0x2016},
+    {0x2018, 0x2019},
+    {0x201c, 0x201d},
+    {0x2020, 0x2022},
+    {0x2024, 0x2027},
+    {0x2030, 0x2030},
+    {0x2032, 0x2033},
+    {0x2035, 0x2035},
+    {0x203b, 0x203b},
+    {0x203e, 0x203e},
+    {0x2074, 0x2074},
+    {0x207f, 0x207f},
+    {0x2081, 0x2084},
+    {0x20ac, 0x20ac},
+    {0x2103, 0x2103},
+    {0x2105, 0x2105},
+    {0x2109, 0x2109},
+    {0x2113, 0x2113},
+    {0x2116, 0x2116},
+    {0x2121, 0x2122},
+    {0x2126, 0x2126},
+    {0x212b, 0x212b},
+    {0x2153, 0x2154},
+    {0x215b, 0x215e},
+    {0x2160, 0x216b},
+    {0x2170, 0x2179},
+    {0x2189, 0x2189},
+    {0x2190, 0x2199},
+    {0x21b8, 0x21b9},
+    {0x21d2, 0x21d2},
+    {0x21d4, 0x21d4},
+    {0x21e7, 0x21e7},
+    {0x2200, 0x2200},
+    {0x2202, 0x2203},
+    {0x2207, 0x2208},
+    {0x220b, 0x220b},
+    {0x220f, 0x220f},
+    {0x2211, 0x2211},
+    {0x2215, 0x2215},
+    {0x221a, 0x221a},
+    {0x221d, 0x2220},
+    {0x2223, 0x2223},
+    {0x2225, 0x2225},
+    {0x2227, 0x222c},
+    {0x222e, 0x222e},
+    {0x2234, 0x2237},
+    {0x223c, 0x223d},
+    {0x2248, 0x2248},
+    {0x224c, 0x224c},
+    {0x2252, 0x2252},
+    {0x2260, 0x2261},
+    {0x2264, 0x2267},
+    {0x226a, 0x226b},
+    {0x226e, 0x226f},
+    {0x2282, 0x2283},
+    {0x2286, 0x2287},
+    {0x2295, 0x2295},
+    {0x2299, 0x2299},
+    {0x22a5, 0x22a5},
+    {0x22bf, 0x22bf},
+    {0x2312, 0x2312},
+    {0x2460, 0x24e9},
+    {0x24eb, 0x254b},
+    {0x2550, 0x2573},
+    {0x2580, 0x258f},
+    {0x2592, 0x2595},
+    {0x25a0, 0x25a1},
+    {0x25a3, 0x25a9},
+    {0x25b2, 0x25b3},
+    {0x25b6, 0x25b7},
+    {0x25bc, 0x25bd},
+    {0x25c0, 0x25c1},
+    {0x25c6, 0x25c8},
+    {0x25cb, 0x25cb},
+    {0x25ce, 0x25d1},
+    {0x25e2, 0x25e5},
+    {0x25ef, 0x25ef},
+    {0x2605, 0x2606},
+    {0x2609, 0x2609},
+    {0x260e, 0x260f},
+    {0x261c, 0x261c},
+    {0x261e, 0x261e},
+    {0x2640, 0x2640},
+    {0x2642, 0x2642},
+    {0x2660, 0x2661},
+    {0x2663, 0x2665},
+    {0x2667, 0x266a},
+    {0x266c, 0x266d},
+    {0x266f, 0x266f},
+    {0x269e, 0x269f},
+    {0x26bf, 0x26bf},
+    {0x26c6, 0x26cd},
+    {0x26cf, 0x26d3},
+    {0x26d5, 0x26e1},
+    {0x26e3, 0x26e3},
+    {0x26e8, 0x26e9},
+    {0x26eb, 0x26f1},
+    {0x26f4, 0x26f4},
+    {0x26f6, 0x26f9},
+    {0x26fb, 0x26fc},
+    {0x26fe, 0x26ff},
+    {0x273d, 0x273d},
+    {0x2776, 0x277f},
+    {0x2b56, 0x2b59},
+    {0x3248, 0x324f},
+    {0xe000, 0xf8ff},
+    {0xfe00, 0xfe0f},
+    {0xfffd, 0xfffd},
+    {0x1f100, 0x1f10a},
+    {0x1f110, 0x1f12d},
+    {0x1f130, 0x1f169},
+    {0x1f170, 0x1f18d},
+    {0x1f18f, 0x1f190},
+    {0x1f19b, 0x1f1ac},
+    {0xe0100, 0xe01ef},
+    {0xf0000, 0xffffd},
+    {0x100000, 0x10fffd}
+};
+
+#if defined(FEAT_TERMINAL) || defined(PROTO)
+/*
+ * utf_char2cells() with different argument type for libvterm.
+ */
+    int
+utf_uint2cells(UINT32_T c)
+{
+    if (c >= 0x100 && utf_iscomposing((int)c))
+	return 0;
+    return utf_char2cells((int)c);
+}
+#endif
+
+/*
+ * For UTF-8 character "c" return 2 for a double-width character, 1 for others.
+ * Returns 4 or 6 for an unprintable character.
+ * Is only correct for characters >= 0x80.
+ * When p_ambw is "double", return 2 for a character with East Asian Width
+ * class 'A'(mbiguous).
+ */
+    int
+utf_char2cells(int c)
+{
+    /* Sorted list of non-overlapping intervals of East Asian double width
+     * characters, generated with ../runtime/tools/unicode.vim. */
+    static struct interval doublewidth[] =
+    {
+	{0x1100, 0x115f},
+	{0x231a, 0x231b},
+	{0x2329, 0x232a},
+	{0x23e9, 0x23ec},
+	{0x23f0, 0x23f0},
+	{0x23f3, 0x23f3},
+	{0x25fd, 0x25fe},
+	{0x2614, 0x2615},
+	{0x2648, 0x2653},
+	{0x267f, 0x267f},
+	{0x2693, 0x2693},
+	{0x26a1, 0x26a1},
+	{0x26aa, 0x26ab},
+	{0x26bd, 0x26be},
+	{0x26c4, 0x26c5},
+	{0x26ce, 0x26ce},
+	{0x26d4, 0x26d4},
+	{0x26ea, 0x26ea},
+	{0x26f2, 0x26f3},
+	{0x26f5, 0x26f5},
+	{0x26fa, 0x26fa},
+	{0x26fd, 0x26fd},
+	{0x2705, 0x2705},
+	{0x270a, 0x270b},
+	{0x2728, 0x2728},
+	{0x274c, 0x274c},
+	{0x274e, 0x274e},
+	{0x2753, 0x2755},
+	{0x2757, 0x2757},
+	{0x2795, 0x2797},
+	{0x27b0, 0x27b0},
+	{0x27bf, 0x27bf},
+	{0x2b1b, 0x2b1c},
+	{0x2b50, 0x2b50},
+	{0x2b55, 0x2b55},
+	{0x2e80, 0x2e99},
+	{0x2e9b, 0x2ef3},
+	{0x2f00, 0x2fd5},
+	{0x2ff0, 0x2ffb},
+	{0x3000, 0x303e},
+	{0x3041, 0x3096},
+	{0x3099, 0x30ff},
+	{0x3105, 0x312f},
+	{0x3131, 0x318e},
+	{0x3190, 0x31ba},
+	{0x31c0, 0x31e3},
+	{0x31f0, 0x321e},
+	{0x3220, 0x3247},
+	{0x3250, 0x32fe},
+	{0x3300, 0x4dbf},
+	{0x4e00, 0xa48c},
+	{0xa490, 0xa4c6},
+	{0xa960, 0xa97c},
+	{0xac00, 0xd7a3},
+	{0xf900, 0xfaff},
+	{0xfe10, 0xfe19},
+	{0xfe30, 0xfe52},
+	{0xfe54, 0xfe66},
+	{0xfe68, 0xfe6b},
+	{0xff01, 0xff60},
+	{0xffe0, 0xffe6},
+	{0x16fe0, 0x16fe1},
+	{0x17000, 0x187f1},
+	{0x18800, 0x18af2},
+	{0x1b000, 0x1b11e},
+	{0x1b170, 0x1b2fb},
+	{0x1f004, 0x1f004},
+	{0x1f0cf, 0x1f0cf},
+	{0x1f18e, 0x1f18e},
+	{0x1f191, 0x1f19a},
+	{0x1f200, 0x1f202},
+	{0x1f210, 0x1f23b},
+	{0x1f240, 0x1f248},
+	{0x1f250, 0x1f251},
+	{0x1f260, 0x1f265},
+	{0x1f300, 0x1f320},
+	{0x1f32d, 0x1f335},
+	{0x1f337, 0x1f37c},
+	{0x1f37e, 0x1f393},
+	{0x1f3a0, 0x1f3ca},
+	{0x1f3cf, 0x1f3d3},
+	{0x1f3e0, 0x1f3f0},
+	{0x1f3f4, 0x1f3f4},
+	{0x1f3f8, 0x1f43e},
+	{0x1f440, 0x1f440},
+	{0x1f442, 0x1f4fc},
+	{0x1f4ff, 0x1f53d},
+	{0x1f54b, 0x1f54e},
+	{0x1f550, 0x1f567},
+	{0x1f57a, 0x1f57a},
+	{0x1f595, 0x1f596},
+	{0x1f5a4, 0x1f5a4},
+	{0x1f5fb, 0x1f64f},
+	{0x1f680, 0x1f6c5},
+	{0x1f6cc, 0x1f6cc},
+	{0x1f6d0, 0x1f6d2},
+	{0x1f6eb, 0x1f6ec},
+	{0x1f6f4, 0x1f6f9},
+	{0x1f910, 0x1f93e},
+	{0x1f940, 0x1f970},
+	{0x1f973, 0x1f976},
+	{0x1f97a, 0x1f97a},
+	{0x1f97c, 0x1f9a2},
+	{0x1f9b0, 0x1f9b9},
+	{0x1f9c0, 0x1f9c2},
+	{0x1f9d0, 0x1f9ff},
+	{0x20000, 0x2fffd},
+	{0x30000, 0x3fffd}
+    };
+
+    /* Sorted list of non-overlapping intervals of Emoji characters that don't
+     * have ambiguous or double width,
+     * based on http://unicode.org/emoji/charts/emoji-list.html */
+    static struct interval emoji_width[] =
+    {
+	{0x1f1e6, 0x1f1ff},
+	{0x1f321, 0x1f321},
+	{0x1f324, 0x1f32c},
+	{0x1f336, 0x1f336},
+	{0x1f37d, 0x1f37d},
+	{0x1f396, 0x1f397},
+	{0x1f399, 0x1f39b},
+	{0x1f39e, 0x1f39f},
+	{0x1f3cb, 0x1f3ce},
+	{0x1f3d4, 0x1f3df},
+	{0x1f3f3, 0x1f3f5},
+	{0x1f3f7, 0x1f3f7},
+	{0x1f43f, 0x1f43f},
+	{0x1f441, 0x1f441},
+	{0x1f4fd, 0x1f4fd},
+	{0x1f549, 0x1f54a},
+	{0x1f56f, 0x1f570},
+	{0x1f573, 0x1f579},
+	{0x1f587, 0x1f587},
+	{0x1f58a, 0x1f58d},
+	{0x1f590, 0x1f590},
+	{0x1f5a5, 0x1f5a5},
+	{0x1f5a8, 0x1f5a8},
+	{0x1f5b1, 0x1f5b2},
+	{0x1f5bc, 0x1f5bc},
+	{0x1f5c2, 0x1f5c4},
+	{0x1f5d1, 0x1f5d3},
+	{0x1f5dc, 0x1f5de},
+	{0x1f5e1, 0x1f5e1},
+	{0x1f5e3, 0x1f5e3},
+	{0x1f5e8, 0x1f5e8},
+	{0x1f5ef, 0x1f5ef},
+	{0x1f5f3, 0x1f5f3},
+	{0x1f5fa, 0x1f5fa},
+	{0x1f6cb, 0x1f6cf},
+	{0x1f6e0, 0x1f6e5},
+	{0x1f6e9, 0x1f6e9},
+	{0x1f6f0, 0x1f6f0},
+	{0x1f6f3, 0x1f6f3}
+    };
+
+    if (c >= 0x100)
+    {
+#ifdef USE_WCHAR_FUNCTIONS
+	/*
+	 * Assume the library function wcwidth() works better than our own
+	 * stuff.  It should return 1 for ambiguous width chars!
+	 */
+	int	n = wcwidth(c);
+
+	if (n < 0)
+	    return 6;		/* unprintable, displays <xxxx> */
+	if (n > 1)
+	    return n;
+#else
+	if (!utf_printable(c))
+	    return 6;		/* unprintable, displays <xxxx> */
+	if (intable(doublewidth, sizeof(doublewidth), c))
+	    return 2;
+#endif
+	if (p_emoji && intable(emoji_width, sizeof(emoji_width), c))
+	    return 2;
+    }
+
+    /* Characters below 0x100 are influenced by 'isprint' option */
+    else if (c >= 0x80 && !vim_isprintc(c))
+	return 4;		/* unprintable, displays <xx> */
+
+    if (c >= 0x80 && *p_ambw == 'd' && intable(ambiguous, sizeof(ambiguous), c))
+	return 2;
+
+    return 1;
+}
+
+/*
+ * mb_ptr2cells() function pointer.
+ * Return the number of display cells character at "*p" occupies.
+ * This doesn't take care of unprintable characters, use ptr2cells() for that.
+ */
+    int
+latin_ptr2cells(char_u *p UNUSED)
+{
+    return 1;
+}
+
+    int
+utf_ptr2cells(
+    char_u	*p)
+{
+    int		c;
+
+    /* Need to convert to a wide character. */
+    if (*p >= 0x80)
+    {
+	c = utf_ptr2char(p);
+	/* An illegal byte is displayed as <xx>. */
+	if (utf_ptr2len(p) == 1 || c == NUL)
+	    return 4;
+	/* If the char is ASCII it must be an overlong sequence. */
+	if (c < 0x80)
+	    return char2cells(c);
+	return utf_char2cells(c);
+    }
+    return 1;
+}
+
+    int
+dbcs_ptr2cells(char_u *p)
+{
+    /* Number of cells is equal to number of bytes, except for euc-jp when
+     * the first byte is 0x8e. */
+    if (enc_dbcs == DBCS_JPNU && *p == 0x8e)
+	return 1;
+    return MB_BYTE2LEN(*p);
+}
+
+/*
+ * mb_ptr2cells_len() function pointer.
+ * Like mb_ptr2cells(), but limit string length to "size".
+ * For an empty string or truncated character returns 1.
+ */
+    int
+latin_ptr2cells_len(char_u *p UNUSED, int size UNUSED)
+{
+    return 1;
+}
+
+    static int
+utf_ptr2cells_len(char_u *p, int size)
+{
+    int		c;
+
+    /* Need to convert to a wide character. */
+    if (size > 0 && *p >= 0x80)
+    {
+	if (utf_ptr2len_len(p, size) < utf8len_tab[*p])
+	    return 1;  /* truncated */
+	c = utf_ptr2char(p);
+	/* An illegal byte is displayed as <xx>. */
+	if (utf_ptr2len(p) == 1 || c == NUL)
+	    return 4;
+	/* If the char is ASCII it must be an overlong sequence. */
+	if (c < 0x80)
+	    return char2cells(c);
+	return utf_char2cells(c);
+    }
+    return 1;
+}
+
+    static int
+dbcs_ptr2cells_len(char_u *p, int size)
+{
+    /* Number of cells is equal to number of bytes, except for euc-jp when
+     * the first byte is 0x8e. */
+    if (size <= 1 || (enc_dbcs == DBCS_JPNU && *p == 0x8e))
+	return 1;
+    return MB_BYTE2LEN(*p);
+}
+
+/*
+ * mb_char2cells() function pointer.
+ * Return the number of display cells character "c" occupies.
+ * Only takes care of multi-byte chars, not "^C" and such.
+ */
+    int
+latin_char2cells(int c UNUSED)
+{
+    return 1;
+}
+
+    static int
+dbcs_char2cells(int c)
+{
+    /* Number of cells is equal to number of bytes, except for euc-jp when
+     * the first byte is 0x8e. */
+    if (enc_dbcs == DBCS_JPNU && ((unsigned)c >> 8) == 0x8e)
+	return 1;
+    /* use the first byte */
+    return MB_BYTE2LEN((unsigned)c >> 8);
+}
+
+/*
+ * Return the number of cells occupied by string "p".
+ * Stop at a NUL character.  When "len" >= 0 stop at character "p[len]".
+ */
+    int
+mb_string2cells(char_u *p, int len)
+{
+    int i;
+    int clen = 0;
+
+    for (i = 0; (len < 0 || i < len) && p[i] != NUL; i += (*mb_ptr2len)(p + i))
+	clen += (*mb_ptr2cells)(p + i);
+    return clen;
+}
+
+/*
+ * mb_off2cells() function pointer.
+ * Return number of display cells for char at ScreenLines[off].
+ * We make sure that the offset used is less than "max_off".
+ */
+    int
+latin_off2cells(unsigned off UNUSED, unsigned max_off UNUSED)
+{
+    return 1;
+}
+
+    int
+dbcs_off2cells(unsigned off, unsigned max_off)
+{
+    /* never check beyond end of the line */
+    if (off >= max_off)
+	return 1;
+
+    /* Number of cells is equal to number of bytes, except for euc-jp when
+     * the first byte is 0x8e. */
+    if (enc_dbcs == DBCS_JPNU && ScreenLines[off] == 0x8e)
+	return 1;
+    return MB_BYTE2LEN(ScreenLines[off]);
+}
+
+    int
+utf_off2cells(unsigned off, unsigned max_off)
+{
+    return (off + 1 < max_off && ScreenLines[off + 1] == 0) ? 2 : 1;
+}
+
+/*
+ * mb_ptr2char() function pointer.
+ * Convert a byte sequence into a character.
+ */
+    int
+latin_ptr2char(char_u *p)
+{
+    return *p;
+}
+
+    static int
+dbcs_ptr2char(char_u *p)
+{
+    if (MB_BYTE2LEN(*p) > 1 && p[1] != NUL)
+	return (p[0] << 8) + p[1];
+    return *p;
+}
+
+/*
+ * Convert a UTF-8 byte sequence to a wide character.
+ * If the sequence is illegal or truncated by a NUL the first byte is
+ * returned.
+ * For an overlong sequence this may return zero.
+ * Does not include composing characters, of course.
+ */
+    int
+utf_ptr2char(char_u *p)
+{
+    int		len;
+
+    if (p[0] < 0x80)	/* be quick for ASCII */
+	return p[0];
+
+    len = utf8len_tab_zero[p[0]];
+    if (len > 1 && (p[1] & 0xc0) == 0x80)
+    {
+	if (len == 2)
+	    return ((p[0] & 0x1f) << 6) + (p[1] & 0x3f);
+	if ((p[2] & 0xc0) == 0x80)
+	{
+	    if (len == 3)
+		return ((p[0] & 0x0f) << 12) + ((p[1] & 0x3f) << 6)
+		    + (p[2] & 0x3f);
+	    if ((p[3] & 0xc0) == 0x80)
+	    {
+		if (len == 4)
+		    return ((p[0] & 0x07) << 18) + ((p[1] & 0x3f) << 12)
+			+ ((p[2] & 0x3f) << 6) + (p[3] & 0x3f);
+		if ((p[4] & 0xc0) == 0x80)
+		{
+		    if (len == 5)
+			return ((p[0] & 0x03) << 24) + ((p[1] & 0x3f) << 18)
+			    + ((p[2] & 0x3f) << 12) + ((p[3] & 0x3f) << 6)
+			    + (p[4] & 0x3f);
+		    if ((p[5] & 0xc0) == 0x80 && len == 6)
+			return ((p[0] & 0x01) << 30) + ((p[1] & 0x3f) << 24)
+			    + ((p[2] & 0x3f) << 18) + ((p[3] & 0x3f) << 12)
+			    + ((p[4] & 0x3f) << 6) + (p[5] & 0x3f);
+		}
+	    }
+	}
+    }
+    /* Illegal value, just return the first byte */
+    return p[0];
+}
+
+/*
+ * Convert a UTF-8 byte sequence to a wide character.
+ * String is assumed to be terminated by NUL or after "n" bytes, whichever
+ * comes first.
+ * The function is safe in the sense that it never accesses memory beyond the
+ * first "n" bytes of "s".
+ *
+ * On success, returns decoded codepoint, advances "s" to the beginning of
+ * next character and decreases "n" accordingly.
+ *
+ * If end of string was reached, returns 0 and, if "n" > 0, advances "s" past
+ * NUL byte.
+ *
+ * If byte sequence is illegal or incomplete, returns -1 and does not advance
+ * "s".
+ */
+    static int
+utf_safe_read_char_adv(char_u **s, size_t *n)
+{
+    int		c, k;
+
+    if (*n == 0) /* end of buffer */
+	return 0;
+
+    k = utf8len_tab_zero[**s];
+
+    if (k == 1)
+    {
+	/* ASCII character or NUL */
+	(*n)--;
+	return *(*s)++;
+    }
+
+    if ((size_t)k <= *n)
+    {
+	/* We have a multibyte sequence and it isn't truncated by buffer
+	 * limits so utf_ptr2char() is safe to use. Or the first byte is
+	 * illegal (k=0), and it's also safe to use utf_ptr2char(). */
+	c = utf_ptr2char(*s);
+
+	/* On failure, utf_ptr2char() returns the first byte, so here we
+	 * check equality with the first byte. The only non-ASCII character
+	 * which equals the first byte of its own UTF-8 representation is
+	 * U+00C3 (UTF-8: 0xC3 0x83), so need to check that special case too.
+	 * It's safe even if n=1, else we would have k=2 > n. */
+	if (c != (int)(**s) || (c == 0xC3 && (*s)[1] == 0x83))
+	{
+	    /* byte sequence was successfully decoded */
+	    *s += k;
+	    *n -= k;
+	    return c;
+	}
+    }
+
+    /* byte sequence is incomplete or illegal */
+    return -1;
+}
+
+/*
+ * Get character at **pp and advance *pp to the next character.
+ * Note: composing characters are skipped!
+ */
+    int
+mb_ptr2char_adv(char_u **pp)
+{
+    int		c;
+
+    c = (*mb_ptr2char)(*pp);
+    *pp += (*mb_ptr2len)(*pp);
+    return c;
+}
+
+/*
+ * Get character at **pp and advance *pp to the next character.
+ * Note: composing characters are returned as separate characters.
+ */
+    int
+mb_cptr2char_adv(char_u **pp)
+{
+    int		c;
+
+    c = (*mb_ptr2char)(*pp);
+    if (enc_utf8)
+	*pp += utf_ptr2len(*pp);
+    else
+	*pp += (*mb_ptr2len)(*pp);
+    return c;
+}
+
+#if defined(FEAT_ARABIC) || defined(PROTO)
+/*
+ * Check whether we are dealing with Arabic combining characters.
+ * Note: these are NOT really composing characters!
+ */
+    int
+arabic_combine(
+    int		one,	    /* first character */
+    int		two)	    /* character just after "one" */
+{
+    if (one == a_LAM)
+	return arabic_maycombine(two);
+    return FALSE;
+}
+
+/*
+ * Check whether we are dealing with a character that could be regarded as an
+ * Arabic combining character, need to check the character before this.
+ */
+    int
+arabic_maycombine(int two)
+{
+    if (p_arshape && !p_tbidi)
+	return (two == a_ALEF_MADDA
+		    || two == a_ALEF_HAMZA_ABOVE
+		    || two == a_ALEF_HAMZA_BELOW
+		    || two == a_ALEF);
+    return FALSE;
+}
+
+/*
+ * Check if the character pointed to by "p2" is a composing character when it
+ * comes after "p1".  For Arabic sometimes "ab" is replaced with "c", which
+ * behaves like a composing character.
+ */
+    int
+utf_composinglike(char_u *p1, char_u *p2)
+{
+    int		c2;
+
+    c2 = utf_ptr2char(p2);
+    if (utf_iscomposing(c2))
+	return TRUE;
+    if (!arabic_maycombine(c2))
+	return FALSE;
+    return arabic_combine(utf_ptr2char(p1), c2);
+}
+#endif
+
+/*
+ * Convert a UTF-8 byte string to a wide character.  Also get up to MAX_MCO
+ * composing characters.
+ */
+    int
+utfc_ptr2char(
+    char_u	*p,
+    int		*pcc)	/* return: composing chars, last one is 0 */
+{
+    int		len;
+    int		c;
+    int		cc;
+    int		i = 0;
+
+    c = utf_ptr2char(p);
+    len = utf_ptr2len(p);
+
+    /* Only accept a composing char when the first char isn't illegal. */
+    if ((len > 1 || *p < 0x80)
+	    && p[len] >= 0x80
+	    && UTF_COMPOSINGLIKE(p, p + len))
+    {
+	cc = utf_ptr2char(p + len);
+	for (;;)
+	{
+	    pcc[i++] = cc;
+	    if (i == MAX_MCO)
+		break;
+	    len += utf_ptr2len(p + len);
+	    if (p[len] < 0x80 || !utf_iscomposing(cc = utf_ptr2char(p + len)))
+		break;
+	}
+    }
+
+    if (i < MAX_MCO)	/* last composing char must be 0 */
+	pcc[i] = 0;
+
+    return c;
+}
+
+/*
+ * Convert a UTF-8 byte string to a wide character.  Also get up to MAX_MCO
+ * composing characters.  Use no more than p[maxlen].
+ */
+    int
+utfc_ptr2char_len(
+    char_u	*p,
+    int		*pcc,	/* return: composing chars, last one is 0 */
+    int		maxlen)
+{
+    int		len;
+    int		c;
+    int		cc;
+    int		i = 0;
+
+    c = utf_ptr2char(p);
+    len = utf_ptr2len_len(p, maxlen);
+    /* Only accept a composing char when the first char isn't illegal. */
+    if ((len > 1 || *p < 0x80)
+	    && len < maxlen
+	    && p[len] >= 0x80
+	    && UTF_COMPOSINGLIKE(p, p + len))
+    {
+	cc = utf_ptr2char(p + len);
+	for (;;)
+	{
+	    pcc[i++] = cc;
+	    if (i == MAX_MCO)
+		break;
+	    len += utf_ptr2len_len(p + len, maxlen - len);
+	    if (len >= maxlen
+		    || p[len] < 0x80
+		    || !utf_iscomposing(cc = utf_ptr2char(p + len)))
+		break;
+	}
+    }
+
+    if (i < MAX_MCO)	/* last composing char must be 0 */
+	pcc[i] = 0;
+
+    return c;
+}
+
+/*
+ * Convert the character at screen position "off" to a sequence of bytes.
+ * Includes the composing characters.
+ * "buf" must at least have the length MB_MAXBYTES + 1.
+ * Only to be used when ScreenLinesUC[off] != 0.
+ * Returns the produced number of bytes.
+ */
+    int
+utfc_char2bytes(int off, char_u *buf)
+{
+    int		len;
+    int		i;
+
+    len = utf_char2bytes(ScreenLinesUC[off], buf);
+    for (i = 0; i < Screen_mco; ++i)
+    {
+	if (ScreenLinesC[i][off] == 0)
+	    break;
+	len += utf_char2bytes(ScreenLinesC[i][off], buf + len);
+    }
+    return len;
+}
+
+/*
+ * Get the length of a UTF-8 byte sequence, not including any following
+ * composing characters.
+ * Returns 0 for "".
+ * Returns 1 for an illegal byte sequence.
+ */
+    int
+utf_ptr2len(char_u *p)
+{
+    int		len;
+    int		i;
+
+    if (*p == NUL)
+	return 0;
+    len = utf8len_tab[*p];
+    for (i = 1; i < len; ++i)
+	if ((p[i] & 0xc0) != 0x80)
+	    return 1;
+    return len;
+}
+
+/*
+ * Return length of UTF-8 character, obtained from the first byte.
+ * "b" must be between 0 and 255!
+ * Returns 1 for an invalid first byte value.
+ */
+    int
+utf_byte2len(int b)
+{
+    return utf8len_tab[b];
+}
+
+/*
+ * Get the length of UTF-8 byte sequence "p[size]".  Does not include any
+ * following composing characters.
+ * Returns 1 for "".
+ * Returns 1 for an illegal byte sequence (also in incomplete byte seq.).
+ * Returns number > "size" for an incomplete byte sequence.
+ * Never returns zero.
+ */
+    int
+utf_ptr2len_len(char_u *p, int size)
+{
+    int		len;
+    int		i;
+    int		m;
+
+    len = utf8len_tab[*p];
+    if (len == 1)
+	return 1;	/* NUL, ascii or illegal lead byte */
+    if (len > size)
+	m = size;	/* incomplete byte sequence. */
+    else
+	m = len;
+    for (i = 1; i < m; ++i)
+	if ((p[i] & 0xc0) != 0x80)
+	    return 1;
+    return len;
+}
+
+/*
+ * Return the number of bytes the UTF-8 encoding of the character at "p" takes.
+ * This includes following composing characters.
+ */
+    int
+utfc_ptr2len(char_u *p)
+{
+    int		len;
+    int		b0 = *p;
+#ifdef FEAT_ARABIC
+    int		prevlen;
+#endif
+
+    if (b0 == NUL)
+	return 0;
+    if (b0 < 0x80 && p[1] < 0x80)	/* be quick for ASCII */
+	return 1;
+
+    /* Skip over first UTF-8 char, stopping at a NUL byte. */
+    len = utf_ptr2len(p);
+
+    /* Check for illegal byte. */
+    if (len == 1 && b0 >= 0x80)
+	return 1;
+
+    /*
+     * Check for composing characters.  We can handle only the first six, but
+     * skip all of them (otherwise the cursor would get stuck).
+     */
+#ifdef FEAT_ARABIC
+    prevlen = 0;
+#endif
+    for (;;)
+    {
+	if (p[len] < 0x80 || !UTF_COMPOSINGLIKE(p + prevlen, p + len))
+	    return len;
+
+	/* Skip over composing char */
+#ifdef FEAT_ARABIC
+	prevlen = len;
+#endif
+	len += utf_ptr2len(p + len);
+    }
+}
+
+/*
+ * Return the number of bytes the UTF-8 encoding of the character at "p[size]"
+ * takes.  This includes following composing characters.
+ * Returns 0 for an empty string.
+ * Returns 1 for an illegal char or an incomplete byte sequence.
+ */
+    int
+utfc_ptr2len_len(char_u *p, int size)
+{
+    int		len;
+#ifdef FEAT_ARABIC
+    int		prevlen;
+#endif
+
+    if (size < 1 || *p == NUL)
+	return 0;
+    if (p[0] < 0x80 && (size == 1 || p[1] < 0x80)) /* be quick for ASCII */
+	return 1;
+
+    /* Skip over first UTF-8 char, stopping at a NUL byte. */
+    len = utf_ptr2len_len(p, size);
+
+    /* Check for illegal byte and incomplete byte sequence. */
+    if ((len == 1 && p[0] >= 0x80) || len > size)
+	return 1;
+
+    /*
+     * Check for composing characters.  We can handle only the first six, but
+     * skip all of them (otherwise the cursor would get stuck).
+     */
+#ifdef FEAT_ARABIC
+    prevlen = 0;
+#endif
+    while (len < size)
+    {
+	int	len_next_char;
+
+	if (p[len] < 0x80)
+	    break;
+
+	/*
+	 * Next character length should not go beyond size to ensure that
+	 * UTF_COMPOSINGLIKE(...) does not read beyond size.
+	 */
+	len_next_char = utf_ptr2len_len(p + len, size - len);
+	if (len_next_char > size - len)
+	    break;
+
+	if (!UTF_COMPOSINGLIKE(p + prevlen, p + len))
+	    break;
+
+	/* Skip over composing char */
+#ifdef FEAT_ARABIC
+	prevlen = len;
+#endif
+	len += len_next_char;
+    }
+    return len;
+}
+
+/*
+ * Return the number of bytes the UTF-8 encoding of character "c" takes.
+ * This does not include composing characters.
+ */
+    int
+utf_char2len(int c)
+{
+    if (c < 0x80)
+	return 1;
+    if (c < 0x800)
+	return 2;
+    if (c < 0x10000)
+	return 3;
+    if (c < 0x200000)
+	return 4;
+    if (c < 0x4000000)
+	return 5;
+    return 6;
+}
+
+/*
+ * Convert Unicode character "c" to UTF-8 string in "buf[]".
+ * Returns the number of bytes.
+ */
+    int
+utf_char2bytes(int c, char_u *buf)
+{
+    if (c < 0x80)		/* 7 bits */
+    {
+	buf[0] = c;
+	return 1;
+    }
+    if (c < 0x800)		/* 11 bits */
+    {
+	buf[0] = 0xc0 + ((unsigned)c >> 6);
+	buf[1] = 0x80 + (c & 0x3f);
+	return 2;
+    }
+    if (c < 0x10000)		/* 16 bits */
+    {
+	buf[0] = 0xe0 + ((unsigned)c >> 12);
+	buf[1] = 0x80 + (((unsigned)c >> 6) & 0x3f);
+	buf[2] = 0x80 + (c & 0x3f);
+	return 3;
+    }
+    if (c < 0x200000)		/* 21 bits */
+    {
+	buf[0] = 0xf0 + ((unsigned)c >> 18);
+	buf[1] = 0x80 + (((unsigned)c >> 12) & 0x3f);
+	buf[2] = 0x80 + (((unsigned)c >> 6) & 0x3f);
+	buf[3] = 0x80 + (c & 0x3f);
+	return 4;
+    }
+    if (c < 0x4000000)		/* 26 bits */
+    {
+	buf[0] = 0xf8 + ((unsigned)c >> 24);
+	buf[1] = 0x80 + (((unsigned)c >> 18) & 0x3f);
+	buf[2] = 0x80 + (((unsigned)c >> 12) & 0x3f);
+	buf[3] = 0x80 + (((unsigned)c >> 6) & 0x3f);
+	buf[4] = 0x80 + (c & 0x3f);
+	return 5;
+    }
+				/* 31 bits */
+    buf[0] = 0xfc + ((unsigned)c >> 30);
+    buf[1] = 0x80 + (((unsigned)c >> 24) & 0x3f);
+    buf[2] = 0x80 + (((unsigned)c >> 18) & 0x3f);
+    buf[3] = 0x80 + (((unsigned)c >> 12) & 0x3f);
+    buf[4] = 0x80 + (((unsigned)c >> 6) & 0x3f);
+    buf[5] = 0x80 + (c & 0x3f);
+    return 6;
+}
+
+#if defined(FEAT_TERMINAL) || defined(PROTO)
+/*
+ * utf_iscomposing() with different argument type for libvterm.
+ */
+    int
+utf_iscomposing_uint(UINT32_T c)
+{
+    return utf_iscomposing((int)c);
+}
+#endif
+
+/*
+ * Return TRUE if "c" is a composing UTF-8 character.  This means it will be
+ * drawn on top of the preceding character.
+ * Based on code from Markus Kuhn.
+ */
+    int
+utf_iscomposing(int c)
+{
+    /* Sorted list of non-overlapping intervals.
+     * Generated by ../runtime/tools/unicode.vim. */
+    static struct interval combining[] =
+    {
+	{0x0300, 0x036f},
+	{0x0483, 0x0489},
+	{0x0591, 0x05bd},
+	{0x05bf, 0x05bf},
+	{0x05c1, 0x05c2},
+	{0x05c4, 0x05c5},
+	{0x05c7, 0x05c7},
+	{0x0610, 0x061a},
+	{0x064b, 0x065f},
+	{0x0670, 0x0670},
+	{0x06d6, 0x06dc},
+	{0x06df, 0x06e4},
+	{0x06e7, 0x06e8},
+	{0x06ea, 0x06ed},
+	{0x0711, 0x0711},
+	{0x0730, 0x074a},
+	{0x07a6, 0x07b0},
+	{0x07eb, 0x07f3},
+	{0x07fd, 0x07fd},
+	{0x0816, 0x0819},
+	{0x081b, 0x0823},
+	{0x0825, 0x0827},
+	{0x0829, 0x082d},
+	{0x0859, 0x085b},
+	{0x08d3, 0x08e1},
+	{0x08e3, 0x0903},
+	{0x093a, 0x093c},
+	{0x093e, 0x094f},
+	{0x0951, 0x0957},
+	{0x0962, 0x0963},
+	{0x0981, 0x0983},
+	{0x09bc, 0x09bc},
+	{0x09be, 0x09c4},
+	{0x09c7, 0x09c8},
+	{0x09cb, 0x09cd},
+	{0x09d7, 0x09d7},
+	{0x09e2, 0x09e3},
+	{0x09fe, 0x09fe},
+	{0x0a01, 0x0a03},
+	{0x0a3c, 0x0a3c},
+	{0x0a3e, 0x0a42},
+	{0x0a47, 0x0a48},
+	{0x0a4b, 0x0a4d},
+	{0x0a51, 0x0a51},
+	{0x0a70, 0x0a71},
+	{0x0a75, 0x0a75},
+	{0x0a81, 0x0a83},
+	{0x0abc, 0x0abc},
+	{0x0abe, 0x0ac5},
+	{0x0ac7, 0x0ac9},
+	{0x0acb, 0x0acd},
+	{0x0ae2, 0x0ae3},
+	{0x0afa, 0x0aff},
+	{0x0b01, 0x0b03},
+	{0x0b3c, 0x0b3c},
+	{0x0b3e, 0x0b44},
+	{0x0b47, 0x0b48},
+	{0x0b4b, 0x0b4d},
+	{0x0b56, 0x0b57},
+	{0x0b62, 0x0b63},
+	{0x0b82, 0x0b82},
+	{0x0bbe, 0x0bc2},
+	{0x0bc6, 0x0bc8},
+	{0x0bca, 0x0bcd},
+	{0x0bd7, 0x0bd7},
+	{0x0c00, 0x0c04},
+	{0x0c3e, 0x0c44},
+	{0x0c46, 0x0c48},
+	{0x0c4a, 0x0c4d},
+	{0x0c55, 0x0c56},
+	{0x0c62, 0x0c63},
+	{0x0c81, 0x0c83},
+	{0x0cbc, 0x0cbc},
+	{0x0cbe, 0x0cc4},
+	{0x0cc6, 0x0cc8},
+	{0x0cca, 0x0ccd},
+	{0x0cd5, 0x0cd6},
+	{0x0ce2, 0x0ce3},
+	{0x0d00, 0x0d03},
+	{0x0d3b, 0x0d3c},
+	{0x0d3e, 0x0d44},
+	{0x0d46, 0x0d48},
+	{0x0d4a, 0x0d4d},
+	{0x0d57, 0x0d57},
+	{0x0d62, 0x0d63},
+	{0x0d82, 0x0d83},
+	{0x0dca, 0x0dca},
+	{0x0dcf, 0x0dd4},
+	{0x0dd6, 0x0dd6},
+	{0x0dd8, 0x0ddf},
+	{0x0df2, 0x0df3},
+	{0x0e31, 0x0e31},
+	{0x0e34, 0x0e3a},
+	{0x0e47, 0x0e4e},
+	{0x0eb1, 0x0eb1},
+	{0x0eb4, 0x0eb9},
+	{0x0ebb, 0x0ebc},
+	{0x0ec8, 0x0ecd},
+	{0x0f18, 0x0f19},
+	{0x0f35, 0x0f35},
+	{0x0f37, 0x0f37},
+	{0x0f39, 0x0f39},
+	{0x0f3e, 0x0f3f},
+	{0x0f71, 0x0f84},
+	{0x0f86, 0x0f87},
+	{0x0f8d, 0x0f97},
+	{0x0f99, 0x0fbc},
+	{0x0fc6, 0x0fc6},
+	{0x102b, 0x103e},
+	{0x1056, 0x1059},
+	{0x105e, 0x1060},
+	{0x1062, 0x1064},
+	{0x1067, 0x106d},
+	{0x1071, 0x1074},
+	{0x1082, 0x108d},
+	{0x108f, 0x108f},
+	{0x109a, 0x109d},
+	{0x135d, 0x135f},
+	{0x1712, 0x1714},
+	{0x1732, 0x1734},
+	{0x1752, 0x1753},
+	{0x1772, 0x1773},
+	{0x17b4, 0x17d3},
+	{0x17dd, 0x17dd},
+	{0x180b, 0x180d},
+	{0x1885, 0x1886},
+	{0x18a9, 0x18a9},
+	{0x1920, 0x192b},
+	{0x1930, 0x193b},
+	{0x1a17, 0x1a1b},
+	{0x1a55, 0x1a5e},
+	{0x1a60, 0x1a7c},
+	{0x1a7f, 0x1a7f},
+	{0x1ab0, 0x1abe},
+	{0x1b00, 0x1b04},
+	{0x1b34, 0x1b44},
+	{0x1b6b, 0x1b73},
+	{0x1b80, 0x1b82},
+	{0x1ba1, 0x1bad},
+	{0x1be6, 0x1bf3},
+	{0x1c24, 0x1c37},
+	{0x1cd0, 0x1cd2},
+	{0x1cd4, 0x1ce8},
+	{0x1ced, 0x1ced},
+	{0x1cf2, 0x1cf4},
+	{0x1cf7, 0x1cf9},
+	{0x1dc0, 0x1df9},
+	{0x1dfb, 0x1dff},
+	{0x20d0, 0x20f0},
+	{0x2cef, 0x2cf1},
+	{0x2d7f, 0x2d7f},
+	{0x2de0, 0x2dff},
+	{0x302a, 0x302f},
+	{0x3099, 0x309a},
+	{0xa66f, 0xa672},
+	{0xa674, 0xa67d},
+	{0xa69e, 0xa69f},
+	{0xa6f0, 0xa6f1},
+	{0xa802, 0xa802},
+	{0xa806, 0xa806},
+	{0xa80b, 0xa80b},
+	{0xa823, 0xa827},
+	{0xa880, 0xa881},
+	{0xa8b4, 0xa8c5},
+	{0xa8e0, 0xa8f1},
+	{0xa8ff, 0xa8ff},
+	{0xa926, 0xa92d},
+	{0xa947, 0xa953},
+	{0xa980, 0xa983},
+	{0xa9b3, 0xa9c0},
+	{0xa9e5, 0xa9e5},
+	{0xaa29, 0xaa36},
+	{0xaa43, 0xaa43},
+	{0xaa4c, 0xaa4d},
+	{0xaa7b, 0xaa7d},
+	{0xaab0, 0xaab0},
+	{0xaab2, 0xaab4},
+	{0xaab7, 0xaab8},
+	{0xaabe, 0xaabf},
+	{0xaac1, 0xaac1},
+	{0xaaeb, 0xaaef},
+	{0xaaf5, 0xaaf6},
+	{0xabe3, 0xabea},
+	{0xabec, 0xabed},
+	{0xfb1e, 0xfb1e},
+	{0xfe00, 0xfe0f},
+	{0xfe20, 0xfe2f},
+	{0x101fd, 0x101fd},
+	{0x102e0, 0x102e0},
+	{0x10376, 0x1037a},
+	{0x10a01, 0x10a03},
+	{0x10a05, 0x10a06},
+	{0x10a0c, 0x10a0f},
+	{0x10a38, 0x10a3a},
+	{0x10a3f, 0x10a3f},
+	{0x10ae5, 0x10ae6},
+	{0x10d24, 0x10d27},
+	{0x10f46, 0x10f50},
+	{0x11000, 0x11002},
+	{0x11038, 0x11046},
+	{0x1107f, 0x11082},
+	{0x110b0, 0x110ba},
+	{0x11100, 0x11102},
+	{0x11127, 0x11134},
+	{0x11145, 0x11146},
+	{0x11173, 0x11173},
+	{0x11180, 0x11182},
+	{0x111b3, 0x111c0},
+	{0x111c9, 0x111cc},
+	{0x1122c, 0x11237},
+	{0x1123e, 0x1123e},
+	{0x112df, 0x112ea},
+	{0x11300, 0x11303},
+	{0x1133b, 0x1133c},
+	{0x1133e, 0x11344},
+	{0x11347, 0x11348},
+	{0x1134b, 0x1134d},
+	{0x11357, 0x11357},
+	{0x11362, 0x11363},
+	{0x11366, 0x1136c},
+	{0x11370, 0x11374},
+	{0x11435, 0x11446},
+	{0x1145e, 0x1145e},
+	{0x114b0, 0x114c3},
+	{0x115af, 0x115b5},
+	{0x115b8, 0x115c0},
+	{0x115dc, 0x115dd},
+	{0x11630, 0x11640},
+	{0x116ab, 0x116b7},
+	{0x1171d, 0x1172b},
+	{0x1182c, 0x1183a},
+	{0x11a01, 0x11a0a},
+	{0x11a33, 0x11a39},
+	{0x11a3b, 0x11a3e},
+	{0x11a47, 0x11a47},
+	{0x11a51, 0x11a5b},
+	{0x11a8a, 0x11a99},
+	{0x11c2f, 0x11c36},
+	{0x11c38, 0x11c3f},
+	{0x11c92, 0x11ca7},
+	{0x11ca9, 0x11cb6},
+	{0x11d31, 0x11d36},
+	{0x11d3a, 0x11d3a},
+	{0x11d3c, 0x11d3d},
+	{0x11d3f, 0x11d45},
+	{0x11d47, 0x11d47},
+	{0x11d8a, 0x11d8e},
+	{0x11d90, 0x11d91},
+	{0x11d93, 0x11d97},
+	{0x11ef3, 0x11ef6},
+	{0x16af0, 0x16af4},
+	{0x16b30, 0x16b36},
+	{0x16f51, 0x16f7e},
+	{0x16f8f, 0x16f92},
+	{0x1bc9d, 0x1bc9e},
+	{0x1d165, 0x1d169},
+	{0x1d16d, 0x1d172},
+	{0x1d17b, 0x1d182},
+	{0x1d185, 0x1d18b},
+	{0x1d1aa, 0x1d1ad},
+	{0x1d242, 0x1d244},
+	{0x1da00, 0x1da36},
+	{0x1da3b, 0x1da6c},
+	{0x1da75, 0x1da75},
+	{0x1da84, 0x1da84},
+	{0x1da9b, 0x1da9f},
+	{0x1daa1, 0x1daaf},
+	{0x1e000, 0x1e006},
+	{0x1e008, 0x1e018},
+	{0x1e01b, 0x1e021},
+	{0x1e023, 0x1e024},
+	{0x1e026, 0x1e02a},
+	{0x1e8d0, 0x1e8d6},
+	{0x1e944, 0x1e94a},
+	{0xe0100, 0xe01ef}
+    };
+
+    return intable(combining, sizeof(combining), c);
+}
+
+/*
+ * Return TRUE for characters that can be displayed in a normal way.
+ * Only for characters of 0x100 and above!
+ */
+    int
+utf_printable(int c)
+{
+#ifdef USE_WCHAR_FUNCTIONS
+    /*
+     * Assume the iswprint() library function works better than our own stuff.
+     */
+    return iswprint(c);
+#else
+    /* Sorted list of non-overlapping intervals.
+     * 0xd800-0xdfff is reserved for UTF-16, actually illegal. */
+    static struct interval nonprint[] =
+    {
+	{0x070f, 0x070f}, {0x180b, 0x180e}, {0x200b, 0x200f}, {0x202a, 0x202e},
+	{0x206a, 0x206f}, {0xd800, 0xdfff}, {0xfeff, 0xfeff}, {0xfff9, 0xfffb},
+	{0xfffe, 0xffff}
+    };
+
+    return !intable(nonprint, sizeof(nonprint), c);
+#endif
+}
+
+/* Sorted list of non-overlapping intervals of all Emoji characters,
+ * based on http://unicode.org/emoji/charts/emoji-list.html */
+static struct interval emoji_all[] =
+{
+    {0x203c, 0x203c},
+    {0x2049, 0x2049},
+    {0x2122, 0x2122},
+    {0x2139, 0x2139},
+    {0x2194, 0x2199},
+    {0x21a9, 0x21aa},
+    {0x231a, 0x231b},
+    {0x2328, 0x2328},
+    {0x23cf, 0x23cf},
+    {0x23e9, 0x23f3},
+    {0x23f8, 0x23fa},
+    {0x24c2, 0x24c2},
+    {0x25aa, 0x25ab},
+    {0x25b6, 0x25b6},
+    {0x25c0, 0x25c0},
+    {0x25fb, 0x25fe},
+    {0x2600, 0x2604},
+    {0x260e, 0x260e},
+    {0x2611, 0x2611},
+    {0x2614, 0x2615},
+    {0x2618, 0x2618},
+    {0x261d, 0x261d},
+    {0x2620, 0x2620},
+    {0x2622, 0x2623},
+    {0x2626, 0x2626},
+    {0x262a, 0x262a},
+    {0x262e, 0x262f},
+    {0x2638, 0x263a},
+    {0x2640, 0x2640},
+    {0x2642, 0x2642},
+    {0x2648, 0x2653},
+    {0x265f, 0x2660},
+    {0x2663, 0x2663},
+    {0x2665, 0x2666},
+    {0x2668, 0x2668},
+    {0x267b, 0x267b},
+    {0x267e, 0x267f},
+    {0x2692, 0x2697},
+    {0x2699, 0x2699},
+    {0x269b, 0x269c},
+    {0x26a0, 0x26a1},
+    {0x26aa, 0x26ab},
+    {0x26b0, 0x26b1},
+    {0x26bd, 0x26be},
+    {0x26c4, 0x26c5},
+    {0x26c8, 0x26c8},
+    {0x26ce, 0x26cf},
+    {0x26d1, 0x26d1},
+    {0x26d3, 0x26d4},
+    {0x26e9, 0x26ea},
+    {0x26f0, 0x26f5},
+    {0x26f7, 0x26fa},
+    {0x26fd, 0x26fd},
+    {0x2702, 0x2702},
+    {0x2705, 0x2705},
+    {0x2708, 0x270d},
+    {0x270f, 0x270f},
+    {0x2712, 0x2712},
+    {0x2714, 0x2714},
+    {0x2716, 0x2716},
+    {0x271d, 0x271d},
+    {0x2721, 0x2721},
+    {0x2728, 0x2728},
+    {0x2733, 0x2734},
+    {0x2744, 0x2744},
+    {0x2747, 0x2747},
+    {0x274c, 0x274c},
+    {0x274e, 0x274e},
+    {0x2753, 0x2755},
+    {0x2757, 0x2757},
+    {0x2763, 0x2764},
+    {0x2795, 0x2797},
+    {0x27a1, 0x27a1},
+    {0x27b0, 0x27b0},
+    {0x27bf, 0x27bf},
+    {0x2934, 0x2935},
+    {0x2b05, 0x2b07},
+    {0x2b1b, 0x2b1c},
+    {0x2b50, 0x2b50},
+    {0x2b55, 0x2b55},
+    {0x3030, 0x3030},
+    {0x303d, 0x303d},
+    {0x3297, 0x3297},
+    {0x3299, 0x3299},
+    {0x1f004, 0x1f004},
+    {0x1f0cf, 0x1f0cf},
+    {0x1f170, 0x1f171},
+    {0x1f17e, 0x1f17f},
+    {0x1f18e, 0x1f18e},
+    {0x1f191, 0x1f19a},
+    {0x1f1e6, 0x1f1ff},
+    {0x1f201, 0x1f202},
+    {0x1f21a, 0x1f21a},
+    {0x1f22f, 0x1f22f},
+    {0x1f232, 0x1f23a},
+    {0x1f250, 0x1f251},
+    {0x1f300, 0x1f321},
+    {0x1f324, 0x1f393},
+    {0x1f396, 0x1f397},
+    {0x1f399, 0x1f39b},
+    {0x1f39e, 0x1f3f0},
+    {0x1f3f3, 0x1f3f5},
+    {0x1f3f7, 0x1f4fd},
+    {0x1f4ff, 0x1f53d},
+    {0x1f549, 0x1f54e},
+    {0x1f550, 0x1f567},
+    {0x1f56f, 0x1f570},
+    {0x1f573, 0x1f57a},
+    {0x1f587, 0x1f587},
+    {0x1f58a, 0x1f58d},
+    {0x1f590, 0x1f590},
+    {0x1f595, 0x1f596},
+    {0x1f5a4, 0x1f5a5},
+    {0x1f5a8, 0x1f5a8},
+    {0x1f5b1, 0x1f5b2},
+    {0x1f5bc, 0x1f5bc},
+    {0x1f5c2, 0x1f5c4},
+    {0x1f5d1, 0x1f5d3},
+    {0x1f5dc, 0x1f5de},
+    {0x1f5e1, 0x1f5e1},
+    {0x1f5e3, 0x1f5e3},
+    {0x1f5e8, 0x1f5e8},
+    {0x1f5ef, 0x1f5ef},
+    {0x1f5f3, 0x1f5f3},
+    {0x1f5fa, 0x1f64f},
+    {0x1f680, 0x1f6c5},
+    {0x1f6cb, 0x1f6d2},
+    {0x1f6e0, 0x1f6e5},
+    {0x1f6e9, 0x1f6e9},
+    {0x1f6eb, 0x1f6ec},
+    {0x1f6f0, 0x1f6f0},
+    {0x1f6f3, 0x1f6f9},
+    {0x1f910, 0x1f93a},
+    {0x1f93c, 0x1f93e},
+    {0x1f940, 0x1f945},
+    {0x1f947, 0x1f970},
+    {0x1f973, 0x1f976},
+    {0x1f97a, 0x1f97a},
+    {0x1f97c, 0x1f9a2},
+    {0x1f9b0, 0x1f9b9},
+    {0x1f9c0, 0x1f9c2},
+    {0x1f9d0, 0x1f9ff}
+};
+
+/*
+ * Get class of a Unicode character.
+ * 0: white space
+ * 1: punctuation
+ * 2 or bigger: some class of word character.
+ */
+    int
+utf_class(int c)
+{
+    return utf_class_buf(c, curbuf);
+}
+
+    int
+utf_class_buf(int c, buf_T *buf)
+{
+    /* sorted list of non-overlapping intervals */
+    static struct clinterval
+    {
+	unsigned int first;
+	unsigned int last;
+	unsigned int class;
+    } classes[] =
+    {
+	{0x037e, 0x037e, 1},		/* Greek question mark */
+	{0x0387, 0x0387, 1},		/* Greek ano teleia */
+	{0x055a, 0x055f, 1},		/* Armenian punctuation */
+	{0x0589, 0x0589, 1},		/* Armenian full stop */
+	{0x05be, 0x05be, 1},
+	{0x05c0, 0x05c0, 1},
+	{0x05c3, 0x05c3, 1},
+	{0x05f3, 0x05f4, 1},
+	{0x060c, 0x060c, 1},
+	{0x061b, 0x061b, 1},
+	{0x061f, 0x061f, 1},
+	{0x066a, 0x066d, 1},
+	{0x06d4, 0x06d4, 1},
+	{0x0700, 0x070d, 1},		/* Syriac punctuation */
+	{0x0964, 0x0965, 1},
+	{0x0970, 0x0970, 1},
+	{0x0df4, 0x0df4, 1},
+	{0x0e4f, 0x0e4f, 1},
+	{0x0e5a, 0x0e5b, 1},
+	{0x0f04, 0x0f12, 1},
+	{0x0f3a, 0x0f3d, 1},
+	{0x0f85, 0x0f85, 1},
+	{0x104a, 0x104f, 1},		/* Myanmar punctuation */
+	{0x10fb, 0x10fb, 1},		/* Georgian punctuation */
+	{0x1361, 0x1368, 1},		/* Ethiopic punctuation */
+	{0x166d, 0x166e, 1},		/* Canadian Syl. punctuation */
+	{0x1680, 0x1680, 0},
+	{0x169b, 0x169c, 1},
+	{0x16eb, 0x16ed, 1},
+	{0x1735, 0x1736, 1},
+	{0x17d4, 0x17dc, 1},		/* Khmer punctuation */
+	{0x1800, 0x180a, 1},		/* Mongolian punctuation */
+	{0x2000, 0x200b, 0},		/* spaces */
+	{0x200c, 0x2027, 1},		/* punctuation and symbols */
+	{0x2028, 0x2029, 0},
+	{0x202a, 0x202e, 1},		/* punctuation and symbols */
+	{0x202f, 0x202f, 0},
+	{0x2030, 0x205e, 1},		/* punctuation and symbols */
+	{0x205f, 0x205f, 0},
+	{0x2060, 0x27ff, 1},		/* punctuation and symbols */
+	{0x2070, 0x207f, 0x2070},	/* superscript */
+	{0x2080, 0x2094, 0x2080},	/* subscript */
+	{0x20a0, 0x27ff, 1},		/* all kinds of symbols */
+	{0x2800, 0x28ff, 0x2800},	/* braille */
+	{0x2900, 0x2998, 1},		/* arrows, brackets, etc. */
+	{0x29d8, 0x29db, 1},
+	{0x29fc, 0x29fd, 1},
+	{0x2e00, 0x2e7f, 1},		/* supplemental punctuation */
+	{0x3000, 0x3000, 0},		/* ideographic space */
+	{0x3001, 0x3020, 1},		/* ideographic punctuation */
+	{0x3030, 0x3030, 1},
+	{0x303d, 0x303d, 1},
+	{0x3040, 0x309f, 0x3040},	/* Hiragana */
+	{0x30a0, 0x30ff, 0x30a0},	/* Katakana */
+	{0x3300, 0x9fff, 0x4e00},	/* CJK Ideographs */
+	{0xac00, 0xd7a3, 0xac00},	/* Hangul Syllables */
+	{0xf900, 0xfaff, 0x4e00},	/* CJK Ideographs */
+	{0xfd3e, 0xfd3f, 1},
+	{0xfe30, 0xfe6b, 1},		/* punctuation forms */
+	{0xff00, 0xff0f, 1},		/* half/fullwidth ASCII */
+	{0xff1a, 0xff20, 1},		/* half/fullwidth ASCII */
+	{0xff3b, 0xff40, 1},		/* half/fullwidth ASCII */
+	{0xff5b, 0xff65, 1},		/* half/fullwidth ASCII */
+	{0x20000, 0x2a6df, 0x4e00},	/* CJK Ideographs */
+	{0x2a700, 0x2b73f, 0x4e00},	/* CJK Ideographs */
+	{0x2b740, 0x2b81f, 0x4e00},	/* CJK Ideographs */
+	{0x2f800, 0x2fa1f, 0x4e00},	/* CJK Ideographs */
+    };
+
+    int bot = 0;
+    int top = sizeof(classes) / sizeof(struct clinterval) - 1;
+    int mid;
+
+    /* First quick check for Latin1 characters, use 'iskeyword'. */
+    if (c < 0x100)
+    {
+	if (c == ' ' || c == '\t' || c == NUL || c == 0xa0)
+	    return 0;	    /* blank */
+	if (vim_iswordc_buf(c, buf))
+	    return 2;	    /* word character */
+	return 1;	    /* punctuation */
+    }
+
+    /* binary search in table */
+    while (top >= bot)
+    {
+	mid = (bot + top) / 2;
+	if (classes[mid].last < (unsigned int)c)
+	    bot = mid + 1;
+	else if (classes[mid].first > (unsigned int)c)
+	    top = mid - 1;
+	else
+	    return (int)classes[mid].class;
+    }
+
+    /* emoji */
+    if (intable(emoji_all, sizeof(emoji_all), c))
+	return 3;
+
+    /* most other characters are "word" characters */
+    return 2;
+}
+
+    int
+utf_ambiguous_width(int c)
+{
+    return c >= 0x80 && (intable(ambiguous, sizeof(ambiguous), c)
+	    || intable(emoji_all, sizeof(emoji_all), c));
+}
+
+/*
+ * Code for Unicode case-dependent operations.  Based on notes in
+ * http://www.unicode.org/Public/UNIDATA/CaseFolding.txt
+ * This code uses simple case folding, not full case folding.
+ * Last updated for Unicode 5.2.
+ */
+
+/*
+ * The following tables are built by ../runtime/tools/unicode.vim.
+ * They must be in numeric order, because we use binary search.
+ * An entry such as {0x41,0x5a,1,32} means that Unicode characters in the
+ * range from 0x41 to 0x5a inclusive, stepping by 1, are changed to
+ * folded/upper/lower by adding 32.
+ */
+typedef struct
+{
+    int rangeStart;
+    int rangeEnd;
+    int step;
+    int offset;
+} convertStruct;
+
+static convertStruct foldCase[] =
+{
+	{0x41,0x5a,1,32},
+	{0xb5,0xb5,-1,775},
+	{0xc0,0xd6,1,32},
+	{0xd8,0xde,1,32},
+	{0x100,0x12e,2,1},
+	{0x132,0x136,2,1},
+	{0x139,0x147,2,1},
+	{0x14a,0x176,2,1},
+	{0x178,0x178,-1,-121},
+	{0x179,0x17d,2,1},
+	{0x17f,0x17f,-1,-268},
+	{0x181,0x181,-1,210},
+	{0x182,0x184,2,1},
+	{0x186,0x186,-1,206},
+	{0x187,0x187,-1,1},
+	{0x189,0x18a,1,205},
+	{0x18b,0x18b,-1,1},
+	{0x18e,0x18e,-1,79},
+	{0x18f,0x18f,-1,202},
+	{0x190,0x190,-1,203},
+	{0x191,0x191,-1,1},
+	{0x193,0x193,-1,205},
+	{0x194,0x194,-1,207},
+	{0x196,0x196,-1,211},
+	{0x197,0x197,-1,209},
+	{0x198,0x198,-1,1},
+	{0x19c,0x19c,-1,211},
+	{0x19d,0x19d,-1,213},
+	{0x19f,0x19f,-1,214},
+	{0x1a0,0x1a4,2,1},
+	{0x1a6,0x1a6,-1,218},
+	{0x1a7,0x1a7,-1,1},
+	{0x1a9,0x1a9,-1,218},
+	{0x1ac,0x1ac,-1,1},
+	{0x1ae,0x1ae,-1,218},
+	{0x1af,0x1af,-1,1},
+	{0x1b1,0x1b2,1,217},
+	{0x1b3,0x1b5,2,1},
+	{0x1b7,0x1b7,-1,219},
+	{0x1b8,0x1bc,4,1},
+	{0x1c4,0x1c4,-1,2},
+	{0x1c5,0x1c5,-1,1},
+	{0x1c7,0x1c7,-1,2},
+	{0x1c8,0x1c8,-1,1},
+	{0x1ca,0x1ca,-1,2},
+	{0x1cb,0x1db,2,1},
+	{0x1de,0x1ee,2,1},
+	{0x1f1,0x1f1,-1,2},
+	{0x1f2,0x1f4,2,1},
+	{0x1f6,0x1f6,-1,-97},
+	{0x1f7,0x1f7,-1,-56},
+	{0x1f8,0x21e,2,1},
+	{0x220,0x220,-1,-130},
+	{0x222,0x232,2,1},
+	{0x23a,0x23a,-1,10795},
+	{0x23b,0x23b,-1,1},
+	{0x23d,0x23d,-1,-163},
+	{0x23e,0x23e,-1,10792},
+	{0x241,0x241,-1,1},
+	{0x243,0x243,-1,-195},
+	{0x244,0x244,-1,69},
+	{0x245,0x245,-1,71},
+	{0x246,0x24e,2,1},
+	{0x345,0x345,-1,116},
+	{0x370,0x372,2,1},
+	{0x376,0x376,-1,1},
+	{0x37f,0x37f,-1,116},
+	{0x386,0x386,-1,38},
+	{0x388,0x38a,1,37},
+	{0x38c,0x38c,-1,64},
+	{0x38e,0x38f,1,63},
+	{0x391,0x3a1,1,32},
+	{0x3a3,0x3ab,1,32},
+	{0x3c2,0x3c2,-1,1},
+	{0x3cf,0x3cf,-1,8},
+	{0x3d0,0x3d0,-1,-30},
+	{0x3d1,0x3d1,-1,-25},
+	{0x3d5,0x3d5,-1,-15},
+	{0x3d6,0x3d6,-1,-22},
+	{0x3d8,0x3ee,2,1},
+	{0x3f0,0x3f0,-1,-54},
+	{0x3f1,0x3f1,-1,-48},
+	{0x3f4,0x3f4,-1,-60},
+	{0x3f5,0x3f5,-1,-64},
+	{0x3f7,0x3f7,-1,1},
+	{0x3f9,0x3f9,-1,-7},
+	{0x3fa,0x3fa,-1,1},
+	{0x3fd,0x3ff,1,-130},
+	{0x400,0x40f,1,80},
+	{0x410,0x42f,1,32},
+	{0x460,0x480,2,1},
+	{0x48a,0x4be,2,1},
+	{0x4c0,0x4c0,-1,15},
+	{0x4c1,0x4cd,2,1},
+	{0x4d0,0x52e,2,1},
+	{0x531,0x556,1,48},
+	{0x10a0,0x10c5,1,7264},
+	{0x10c7,0x10cd,6,7264},
+	{0x13f8,0x13fd,1,-8},
+	{0x1c80,0x1c80,-1,-6222},
+	{0x1c81,0x1c81,-1,-6221},
+	{0x1c82,0x1c82,-1,-6212},
+	{0x1c83,0x1c84,1,-6210},
+	{0x1c85,0x1c85,-1,-6211},
+	{0x1c86,0x1c86,-1,-6204},
+	{0x1c87,0x1c87,-1,-6180},
+	{0x1c88,0x1c88,-1,35267},
+	{0x1c90,0x1cba,1,-3008},
+	{0x1cbd,0x1cbf,1,-3008},
+	{0x1e00,0x1e94,2,1},
+	{0x1e9b,0x1e9b,-1,-58},
+	{0x1e9e,0x1e9e,-1,-7615},
+	{0x1ea0,0x1efe,2,1},
+	{0x1f08,0x1f0f,1,-8},
+	{0x1f18,0x1f1d,1,-8},
+	{0x1f28,0x1f2f,1,-8},
+	{0x1f38,0x1f3f,1,-8},
+	{0x1f48,0x1f4d,1,-8},
+	{0x1f59,0x1f5f,2,-8},
+	{0x1f68,0x1f6f,1,-8},
+	{0x1f88,0x1f8f,1,-8},
+	{0x1f98,0x1f9f,1,-8},
+	{0x1fa8,0x1faf,1,-8},
+	{0x1fb8,0x1fb9,1,-8},
+	{0x1fba,0x1fbb,1,-74},
+	{0x1fbc,0x1fbc,-1,-9},
+	{0x1fbe,0x1fbe,-1,-7173},
+	{0x1fc8,0x1fcb,1,-86},
+	{0x1fcc,0x1fcc,-1,-9},
+	{0x1fd8,0x1fd9,1,-8},
+	{0x1fda,0x1fdb,1,-100},
+	{0x1fe8,0x1fe9,1,-8},
+	{0x1fea,0x1feb,1,-112},
+	{0x1fec,0x1fec,-1,-7},
+	{0x1ff8,0x1ff9,1,-128},
+	{0x1ffa,0x1ffb,1,-126},
+	{0x1ffc,0x1ffc,-1,-9},
+	{0x2126,0x2126,-1,-7517},
+	{0x212a,0x212a,-1,-8383},
+	{0x212b,0x212b,-1,-8262},
+	{0x2132,0x2132,-1,28},
+	{0x2160,0x216f,1,16},
+	{0x2183,0x2183,-1,1},
+	{0x24b6,0x24cf,1,26},
+	{0x2c00,0x2c2e,1,48},
+	{0x2c60,0x2c60,-1,1},
+	{0x2c62,0x2c62,-1,-10743},
+	{0x2c63,0x2c63,-1,-3814},
+	{0x2c64,0x2c64,-1,-10727},
+	{0x2c67,0x2c6b,2,1},
+	{0x2c6d,0x2c6d,-1,-10780},
+	{0x2c6e,0x2c6e,-1,-10749},
+	{0x2c6f,0x2c6f,-1,-10783},
+	{0x2c70,0x2c70,-1,-10782},
+	{0x2c72,0x2c75,3,1},
+	{0x2c7e,0x2c7f,1,-10815},
+	{0x2c80,0x2ce2,2,1},
+	{0x2ceb,0x2ced,2,1},
+	{0x2cf2,0xa640,31054,1},
+	{0xa642,0xa66c,2,1},
+	{0xa680,0xa69a,2,1},
+	{0xa722,0xa72e,2,1},
+	{0xa732,0xa76e,2,1},
+	{0xa779,0xa77b,2,1},
+	{0xa77d,0xa77d,-1,-35332},
+	{0xa77e,0xa786,2,1},
+	{0xa78b,0xa78b,-1,1},
+	{0xa78d,0xa78d,-1,-42280},
+	{0xa790,0xa792,2,1},
+	{0xa796,0xa7a8,2,1},
+	{0xa7aa,0xa7aa,-1,-42308},
+	{0xa7ab,0xa7ab,-1,-42319},
+	{0xa7ac,0xa7ac,-1,-42315},
+	{0xa7ad,0xa7ad,-1,-42305},
+	{0xa7ae,0xa7ae,-1,-42308},
+	{0xa7b0,0xa7b0,-1,-42258},
+	{0xa7b1,0xa7b1,-1,-42282},
+	{0xa7b2,0xa7b2,-1,-42261},
+	{0xa7b3,0xa7b3,-1,928},
+	{0xa7b4,0xa7b8,2,1},
+	{0xab70,0xabbf,1,-38864},
+	{0xff21,0xff3a,1,32},
+	{0x10400,0x10427,1,40},
+	{0x104b0,0x104d3,1,40},
+	{0x10c80,0x10cb2,1,64},
+	{0x118a0,0x118bf,1,32},
+	{0x16e40,0x16e5f,1,32},
+	{0x1e900,0x1e921,1,34}
+};
+
+/*
+ * Generic conversion function for case operations.
+ * Return the converted equivalent of "a", which is a UCS-4 character.  Use
+ * the given conversion "table".  Uses binary search on "table".
+ */
+    static int
+utf_convert(
+    int			a,
+    convertStruct	table[],
+    int			tableSize)
+{
+    int start, mid, end; /* indices into table */
+    int entries = tableSize / sizeof(convertStruct);
+
+    start = 0;
+    end = entries;
+    while (start < end)
+    {
+	/* need to search further */
+	mid = (end + start) / 2;
+	if (table[mid].rangeEnd < a)
+	    start = mid + 1;
+	else
+	    end = mid;
+    }
+    if (start < entries
+	    && table[start].rangeStart <= a
+	    && a <= table[start].rangeEnd
+	    && (a - table[start].rangeStart) % table[start].step == 0)
+	return (a + table[start].offset);
+    else
+	return a;
+}
+
+/*
+ * Return the folded-case equivalent of "a", which is a UCS-4 character.  Uses
+ * simple case folding.
+ */
+    int
+utf_fold(int a)
+{
+    if (a < 0x80)
+	/* be fast for ASCII */
+	return a >= 0x41 && a <= 0x5a ? a + 32 : a;
+    return utf_convert(a, foldCase, (int)sizeof(foldCase));
+}
+
+static convertStruct toLower[] =
+{
+	{0x41,0x5a,1,32},
+	{0xc0,0xd6,1,32},
+	{0xd8,0xde,1,32},
+	{0x100,0x12e,2,1},
+	{0x130,0x130,-1,-199},
+	{0x132,0x136,2,1},
+	{0x139,0x147,2,1},
+	{0x14a,0x176,2,1},
+	{0x178,0x178,-1,-121},
+	{0x179,0x17d,2,1},
+	{0x181,0x181,-1,210},
+	{0x182,0x184,2,1},
+	{0x186,0x186,-1,206},
+	{0x187,0x187,-1,1},
+	{0x189,0x18a,1,205},
+	{0x18b,0x18b,-1,1},
+	{0x18e,0x18e,-1,79},
+	{0x18f,0x18f,-1,202},
+	{0x190,0x190,-1,203},
+	{0x191,0x191,-1,1},
+	{0x193,0x193,-1,205},
+	{0x194,0x194,-1,207},
+	{0x196,0x196,-1,211},
+	{0x197,0x197,-1,209},
+	{0x198,0x198,-1,1},
+	{0x19c,0x19c,-1,211},
+	{0x19d,0x19d,-1,213},
+	{0x19f,0x19f,-1,214},
+	{0x1a0,0x1a4,2,1},
+	{0x1a6,0x1a6,-1,218},
+	{0x1a7,0x1a7,-1,1},
+	{0x1a9,0x1a9,-1,218},
+	{0x1ac,0x1ac,-1,1},
+	{0x1ae,0x1ae,-1,218},
+	{0x1af,0x1af,-1,1},
+	{0x1b1,0x1b2,1,217},
+	{0x1b3,0x1b5,2,1},
+	{0x1b7,0x1b7,-1,219},
+	{0x1b8,0x1bc,4,1},
+	{0x1c4,0x1c4,-1,2},
+	{0x1c5,0x1c5,-1,1},
+	{0x1c7,0x1c7,-1,2},
+	{0x1c8,0x1c8,-1,1},
+	{0x1ca,0x1ca,-1,2},
+	{0x1cb,0x1db,2,1},
+	{0x1de,0x1ee,2,1},
+	{0x1f1,0x1f1,-1,2},
+	{0x1f2,0x1f4,2,1},
+	{0x1f6,0x1f6,-1,-97},
+	{0x1f7,0x1f7,-1,-56},
+	{0x1f8,0x21e,2,1},
+	{0x220,0x220,-1,-130},
+	{0x222,0x232,2,1},
+	{0x23a,0x23a,-1,10795},
+	{0x23b,0x23b,-1,1},
+	{0x23d,0x23d,-1,-163},
+	{0x23e,0x23e,-1,10792},
+	{0x241,0x241,-1,1},
+	{0x243,0x243,-1,-195},
+	{0x244,0x244,-1,69},
+	{0x245,0x245,-1,71},
+	{0x246,0x24e,2,1},
+	{0x370,0x372,2,1},
+	{0x376,0x376,-1,1},
+	{0x37f,0x37f,-1,116},
+	{0x386,0x386,-1,38},
+	{0x388,0x38a,1,37},
+	{0x38c,0x38c,-1,64},
+	{0x38e,0x38f,1,63},
+	{0x391,0x3a1,1,32},
+	{0x3a3,0x3ab,1,32},
+	{0x3cf,0x3cf,-1,8},
+	{0x3d8,0x3ee,2,1},
+	{0x3f4,0x3f4,-1,-60},
+	{0x3f7,0x3f7,-1,1},
+	{0x3f9,0x3f9,-1,-7},
+	{0x3fa,0x3fa,-1,1},
+	{0x3fd,0x3ff,1,-130},
+	{0x400,0x40f,1,80},
+	{0x410,0x42f,1,32},
+	{0x460,0x480,2,1},
+	{0x48a,0x4be,2,1},
+	{0x4c0,0x4c0,-1,15},
+	{0x4c1,0x4cd,2,1},
+	{0x4d0,0x52e,2,1},
+	{0x531,0x556,1,48},
+	{0x10a0,0x10c5,1,7264},
+	{0x10c7,0x10cd,6,7264},
+	{0x13a0,0x13ef,1,38864},
+	{0x13f0,0x13f5,1,8},
+	{0x1c90,0x1cba,1,-3008},
+	{0x1cbd,0x1cbf,1,-3008},
+	{0x1e00,0x1e94,2,1},
+	{0x1e9e,0x1e9e,-1,-7615},
+	{0x1ea0,0x1efe,2,1},
+	{0x1f08,0x1f0f,1,-8},
+	{0x1f18,0x1f1d,1,-8},
+	{0x1f28,0x1f2f,1,-8},
+	{0x1f38,0x1f3f,1,-8},
+	{0x1f48,0x1f4d,1,-8},
+	{0x1f59,0x1f5f,2,-8},
+	{0x1f68,0x1f6f,1,-8},
+	{0x1f88,0x1f8f,1,-8},
+	{0x1f98,0x1f9f,1,-8},
+	{0x1fa8,0x1faf,1,-8},
+	{0x1fb8,0x1fb9,1,-8},
+	{0x1fba,0x1fbb,1,-74},
+	{0x1fbc,0x1fbc,-1,-9},
+	{0x1fc8,0x1fcb,1,-86},
+	{0x1fcc,0x1fcc,-1,-9},
+	{0x1fd8,0x1fd9,1,-8},
+	{0x1fda,0x1fdb,1,-100},
+	{0x1fe8,0x1fe9,1,-8},
+	{0x1fea,0x1feb,1,-112},
+	{0x1fec,0x1fec,-1,-7},
+	{0x1ff8,0x1ff9,1,-128},
+	{0x1ffa,0x1ffb,1,-126},
+	{0x1ffc,0x1ffc,-1,-9},
+	{0x2126,0x2126,-1,-7517},
+	{0x212a,0x212a,-1,-8383},
+	{0x212b,0x212b,-1,-8262},
+	{0x2132,0x2132,-1,28},
+	{0x2160,0x216f,1,16},
+	{0x2183,0x2183,-1,1},
+	{0x24b6,0x24cf,1,26},
+	{0x2c00,0x2c2e,1,48},
+	{0x2c60,0x2c60,-1,1},
+	{0x2c62,0x2c62,-1,-10743},
+	{0x2c63,0x2c63,-1,-3814},
+	{0x2c64,0x2c64,-1,-10727},
+	{0x2c67,0x2c6b,2,1},
+	{0x2c6d,0x2c6d,-1,-10780},
+	{0x2c6e,0x2c6e,-1,-10749},
+	{0x2c6f,0x2c6f,-1,-10783},
+	{0x2c70,0x2c70,-1,-10782},
+	{0x2c72,0x2c75,3,1},
+	{0x2c7e,0x2c7f,1,-10815},
+	{0x2c80,0x2ce2,2,1},
+	{0x2ceb,0x2ced,2,1},
+	{0x2cf2,0xa640,31054,1},
+	{0xa642,0xa66c,2,1},
+	{0xa680,0xa69a,2,1},
+	{0xa722,0xa72e,2,1},
+	{0xa732,0xa76e,2,1},
+	{0xa779,0xa77b,2,1},
+	{0xa77d,0xa77d,-1,-35332},
+	{0xa77e,0xa786,2,1},
+	{0xa78b,0xa78b,-1,1},
+	{0xa78d,0xa78d,-1,-42280},
+	{0xa790,0xa792,2,1},
+	{0xa796,0xa7a8,2,1},
+	{0xa7aa,0xa7aa,-1,-42308},
+	{0xa7ab,0xa7ab,-1,-42319},
+	{0xa7ac,0xa7ac,-1,-42315},
+	{0xa7ad,0xa7ad,-1,-42305},
+	{0xa7ae,0xa7ae,-1,-42308},
+	{0xa7b0,0xa7b0,-1,-42258},
+	{0xa7b1,0xa7b1,-1,-42282},
+	{0xa7b2,0xa7b2,-1,-42261},
+	{0xa7b3,0xa7b3,-1,928},
+	{0xa7b4,0xa7b8,2,1},
+	{0xff21,0xff3a,1,32},
+	{0x10400,0x10427,1,40},
+	{0x104b0,0x104d3,1,40},
+	{0x10c80,0x10cb2,1,64},
+	{0x118a0,0x118bf,1,32},
+	{0x16e40,0x16e5f,1,32},
+	{0x1e900,0x1e921,1,34}
+};
+
+static convertStruct toUpper[] =
+{
+	{0x61,0x7a,1,-32},
+	{0xb5,0xb5,-1,743},
+	{0xe0,0xf6,1,-32},
+	{0xf8,0xfe,1,-32},
+	{0xff,0xff,-1,121},
+	{0x101,0x12f,2,-1},
+	{0x131,0x131,-1,-232},
+	{0x133,0x137,2,-1},
+	{0x13a,0x148,2,-1},
+	{0x14b,0x177,2,-1},
+	{0x17a,0x17e,2,-1},
+	{0x17f,0x17f,-1,-300},
+	{0x180,0x180,-1,195},
+	{0x183,0x185,2,-1},
+	{0x188,0x18c,4,-1},
+	{0x192,0x192,-1,-1},
+	{0x195,0x195,-1,97},
+	{0x199,0x199,-1,-1},
+	{0x19a,0x19a,-1,163},
+	{0x19e,0x19e,-1,130},
+	{0x1a1,0x1a5,2,-1},
+	{0x1a8,0x1ad,5,-1},
+	{0x1b0,0x1b4,4,-1},
+	{0x1b6,0x1b9,3,-1},
+	{0x1bd,0x1bd,-1,-1},
+	{0x1bf,0x1bf,-1,56},
+	{0x1c5,0x1c5,-1,-1},
+	{0x1c6,0x1c6,-1,-2},
+	{0x1c8,0x1c8,-1,-1},
+	{0x1c9,0x1c9,-1,-2},
+	{0x1cb,0x1cb,-1,-1},
+	{0x1cc,0x1cc,-1,-2},
+	{0x1ce,0x1dc,2,-1},
+	{0x1dd,0x1dd,-1,-79},
+	{0x1df,0x1ef,2,-1},
+	{0x1f2,0x1f2,-1,-1},
+	{0x1f3,0x1f3,-1,-2},
+	{0x1f5,0x1f9,4,-1},
+	{0x1fb,0x21f,2,-1},
+	{0x223,0x233,2,-1},
+	{0x23c,0x23c,-1,-1},
+	{0x23f,0x240,1,10815},
+	{0x242,0x247,5,-1},
+	{0x249,0x24f,2,-1},
+	{0x250,0x250,-1,10783},
+	{0x251,0x251,-1,10780},
+	{0x252,0x252,-1,10782},
+	{0x253,0x253,-1,-210},
+	{0x254,0x254,-1,-206},
+	{0x256,0x257,1,-205},
+	{0x259,0x259,-1,-202},
+	{0x25b,0x25b,-1,-203},
+	{0x25c,0x25c,-1,42319},
+	{0x260,0x260,-1,-205},
+	{0x261,0x261,-1,42315},
+	{0x263,0x263,-1,-207},
+	{0x265,0x265,-1,42280},
+	{0x266,0x266,-1,42308},
+	{0x268,0x268,-1,-209},
+	{0x269,0x269,-1,-211},
+	{0x26a,0x26a,-1,42308},
+	{0x26b,0x26b,-1,10743},
+	{0x26c,0x26c,-1,42305},
+	{0x26f,0x26f,-1,-211},
+	{0x271,0x271,-1,10749},
+	{0x272,0x272,-1,-213},
+	{0x275,0x275,-1,-214},
+	{0x27d,0x27d,-1,10727},
+	{0x280,0x283,3,-218},
+	{0x287,0x287,-1,42282},
+	{0x288,0x288,-1,-218},
+	{0x289,0x289,-1,-69},
+	{0x28a,0x28b,1,-217},
+	{0x28c,0x28c,-1,-71},
+	{0x292,0x292,-1,-219},
+	{0x29d,0x29d,-1,42261},
+	{0x29e,0x29e,-1,42258},
+	{0x345,0x345,-1,84},
+	{0x371,0x373,2,-1},
+	{0x377,0x377,-1,-1},
+	{0x37b,0x37d,1,130},
+	{0x3ac,0x3ac,-1,-38},
+	{0x3ad,0x3af,1,-37},
+	{0x3b1,0x3c1,1,-32},
+	{0x3c2,0x3c2,-1,-31},
+	{0x3c3,0x3cb,1,-32},
+	{0x3cc,0x3cc,-1,-64},
+	{0x3cd,0x3ce,1,-63},
+	{0x3d0,0x3d0,-1,-62},
+	{0x3d1,0x3d1,-1,-57},
+	{0x3d5,0x3d5,-1,-47},
+	{0x3d6,0x3d6,-1,-54},
+	{0x3d7,0x3d7,-1,-8},
+	{0x3d9,0x3ef,2,-1},
+	{0x3f0,0x3f0,-1,-86},
+	{0x3f1,0x3f1,-1,-80},
+	{0x3f2,0x3f2,-1,7},
+	{0x3f3,0x3f3,-1,-116},
+	{0x3f5,0x3f5,-1,-96},
+	{0x3f8,0x3fb,3,-1},
+	{0x430,0x44f,1,-32},
+	{0x450,0x45f,1,-80},
+	{0x461,0x481,2,-1},
+	{0x48b,0x4bf,2,-1},
+	{0x4c2,0x4ce,2,-1},
+	{0x4cf,0x4cf,-1,-15},
+	{0x4d1,0x52f,2,-1},
+	{0x561,0x586,1,-48},
+	{0x10d0,0x10fa,1,3008},
+	{0x10fd,0x10ff,1,3008},
+	{0x13f8,0x13fd,1,-8},
+	{0x1c80,0x1c80,-1,-6254},
+	{0x1c81,0x1c81,-1,-6253},
+	{0x1c82,0x1c82,-1,-6244},
+	{0x1c83,0x1c84,1,-6242},
+	{0x1c85,0x1c85,-1,-6243},
+	{0x1c86,0x1c86,-1,-6236},
+	{0x1c87,0x1c87,-1,-6181},
+	{0x1c88,0x1c88,-1,35266},
+	{0x1d79,0x1d79,-1,35332},
+	{0x1d7d,0x1d7d,-1,3814},
+	{0x1e01,0x1e95,2,-1},
+	{0x1e9b,0x1e9b,-1,-59},
+	{0x1ea1,0x1eff,2,-1},
+	{0x1f00,0x1f07,1,8},
+	{0x1f10,0x1f15,1,8},
+	{0x1f20,0x1f27,1,8},
+	{0x1f30,0x1f37,1,8},
+	{0x1f40,0x1f45,1,8},
+	{0x1f51,0x1f57,2,8},
+	{0x1f60,0x1f67,1,8},
+	{0x1f70,0x1f71,1,74},
+	{0x1f72,0x1f75,1,86},
+	{0x1f76,0x1f77,1,100},
+	{0x1f78,0x1f79,1,128},
+	{0x1f7a,0x1f7b,1,112},
+	{0x1f7c,0x1f7d,1,126},
+	{0x1f80,0x1f87,1,8},
+	{0x1f90,0x1f97,1,8},
+	{0x1fa0,0x1fa7,1,8},
+	{0x1fb0,0x1fb1,1,8},
+	{0x1fb3,0x1fb3,-1,9},
+	{0x1fbe,0x1fbe,-1,-7205},
+	{0x1fc3,0x1fc3,-1,9},
+	{0x1fd0,0x1fd1,1,8},
+	{0x1fe0,0x1fe1,1,8},
+	{0x1fe5,0x1fe5,-1,7},
+	{0x1ff3,0x1ff3,-1,9},
+	{0x214e,0x214e,-1,-28},
+	{0x2170,0x217f,1,-16},
+	{0x2184,0x2184,-1,-1},
+	{0x24d0,0x24e9,1,-26},
+	{0x2c30,0x2c5e,1,-48},
+	{0x2c61,0x2c61,-1,-1},
+	{0x2c65,0x2c65,-1,-10795},
+	{0x2c66,0x2c66,-1,-10792},
+	{0x2c68,0x2c6c,2,-1},
+	{0x2c73,0x2c76,3,-1},
+	{0x2c81,0x2ce3,2,-1},
+	{0x2cec,0x2cee,2,-1},
+	{0x2cf3,0x2cf3,-1,-1},
+	{0x2d00,0x2d25,1,-7264},
+	{0x2d27,0x2d2d,6,-7264},
+	{0xa641,0xa66d,2,-1},
+	{0xa681,0xa69b,2,-1},
+	{0xa723,0xa72f,2,-1},
+	{0xa733,0xa76f,2,-1},
+	{0xa77a,0xa77c,2,-1},
+	{0xa77f,0xa787,2,-1},
+	{0xa78c,0xa791,5,-1},
+	{0xa793,0xa797,4,-1},
+	{0xa799,0xa7a9,2,-1},
+	{0xa7b5,0xa7b9,2,-1},
+	{0xab53,0xab53,-1,-928},
+	{0xab70,0xabbf,1,-38864},
+	{0xff41,0xff5a,1,-32},
+	{0x10428,0x1044f,1,-40},
+	{0x104d8,0x104fb,1,-40},
+	{0x10cc0,0x10cf2,1,-64},
+	{0x118c0,0x118df,1,-32},
+	{0x16e60,0x16e7f,1,-32},
+	{0x1e922,0x1e943,1,-34}
+};
+
+/*
+ * Return the upper-case equivalent of "a", which is a UCS-4 character.  Use
+ * simple case folding.
+ */
+    int
+utf_toupper(int a)
+{
+    /* If 'casemap' contains "keepascii" use ASCII style toupper(). */
+    if (a < 128 && (cmp_flags & CMP_KEEPASCII))
+	return TOUPPER_ASC(a);
+
+#if defined(HAVE_TOWUPPER) && defined(__STDC_ISO_10646__)
+    /* If towupper() is available and handles Unicode, use it. */
+    if (!(cmp_flags & CMP_INTERNAL))
+	return towupper(a);
+#endif
+
+    /* For characters below 128 use locale sensitive toupper(). */
+    if (a < 128)
+	return TOUPPER_LOC(a);
+
+    /* For any other characters use the above mapping table. */
+    return utf_convert(a, toUpper, (int)sizeof(toUpper));
+}
+
+    int
+utf_islower(int a)
+{
+    /* German sharp s is lower case but has no upper case equivalent. */
+    return (utf_toupper(a) != a) || a == 0xdf;
+}
+
+/*
+ * Return the lower-case equivalent of "a", which is a UCS-4 character.  Use
+ * simple case folding.
+ */
+    int
+utf_tolower(int a)
+{
+    /* If 'casemap' contains "keepascii" use ASCII style tolower(). */
+    if (a < 128 && (cmp_flags & CMP_KEEPASCII))
+	return TOLOWER_ASC(a);
+
+#if defined(HAVE_TOWLOWER) && defined(__STDC_ISO_10646__)
+    /* If towlower() is available and handles Unicode, use it. */
+    if (!(cmp_flags & CMP_INTERNAL))
+	return towlower(a);
+#endif
+
+    /* For characters below 128 use locale sensitive tolower(). */
+    if (a < 128)
+	return TOLOWER_LOC(a);
+
+    /* For any other characters use the above mapping table. */
+    return utf_convert(a, toLower, (int)sizeof(toLower));
+}
+
+    int
+utf_isupper(int a)
+{
+    return (utf_tolower(a) != a);
+}
+
+    static int
+utf_strnicmp(
+    char_u      *s1,
+    char_u      *s2,
+    size_t      n1,
+    size_t      n2)
+{
+    int		c1, c2, cdiff;
+    char_u	buffer[6];
+
+    for (;;)
+    {
+	c1 = utf_safe_read_char_adv(&s1, &n1);
+	c2 = utf_safe_read_char_adv(&s2, &n2);
+
+	if (c1 <= 0 || c2 <= 0)
+	    break;
+
+	if (c1 == c2)
+	    continue;
+
+	cdiff = utf_fold(c1) - utf_fold(c2);
+	if (cdiff != 0)
+	    return cdiff;
+    }
+
+    /* some string ended or has an incomplete/illegal character sequence */
+
+    if (c1 == 0 || c2 == 0)
+    {
+	/* some string ended. shorter string is smaller */
+	if (c1 == 0 && c2 == 0)
+	    return 0;
+	return c1 == 0 ? -1 : 1;
+    }
+
+    /* Continue with bytewise comparison to produce some result that
+     * would make comparison operations involving this function transitive.
+     *
+     * If only one string had an error, comparison should be made with
+     * folded version of the other string. In this case it is enough
+     * to fold just one character to determine the result of comparison. */
+
+    if (c1 != -1 && c2 == -1)
+    {
+	n1 = utf_char2bytes(utf_fold(c1), buffer);
+	s1 = buffer;
+    }
+    else if (c2 != -1 && c1 == -1)
+    {
+	n2 = utf_char2bytes(utf_fold(c2), buffer);
+	s2 = buffer;
+    }
+
+    while (n1 > 0 && n2 > 0 && *s1 != NUL && *s2 != NUL)
+    {
+	cdiff = (int)(*s1) - (int)(*s2);
+	if (cdiff != 0)
+	    return cdiff;
+
+	s1++;
+	s2++;
+	n1--;
+	n2--;
+    }
+
+    if (n1 > 0 && *s1 == NUL)
+	n1 = 0;
+    if (n2 > 0 && *s2 == NUL)
+	n2 = 0;
+
+    if (n1 == 0 && n2 == 0)
+	return 0;
+    return n1 == 0 ? -1 : 1;
+}
+
+/*
+ * Version of strnicmp() that handles multi-byte characters.
+ * Needed for Big5, Shift-JIS and UTF-8 encoding.  Other DBCS encodings can
+ * probably use strnicmp(), because there are no ASCII characters in the
+ * second byte.
+ * Returns zero if s1 and s2 are equal (ignoring case), the difference between
+ * two characters otherwise.
+ */
+    int
+mb_strnicmp(char_u *s1, char_u *s2, size_t nn)
+{
+    int		i, l;
+    int		cdiff;
+    int		n = (int)nn;
+
+    if (enc_utf8)
+    {
+	return utf_strnicmp(s1, s2, nn, nn);
+    }
+    else
+    {
+	for (i = 0; i < n; i += l)
+	{
+	    if (s1[i] == NUL && s2[i] == NUL)	/* both strings end */
+		return 0;
+
+	    l = (*mb_ptr2len)(s1 + i);
+	    if (l <= 1)
+	    {
+		/* Single byte: first check normally, then with ignore case. */
+		if (s1[i] != s2[i])
+		{
+		    cdiff = MB_TOLOWER(s1[i]) - MB_TOLOWER(s2[i]);
+		    if (cdiff != 0)
+			return cdiff;
+		}
+	    }
+	    else
+	    {
+		/* For non-Unicode multi-byte don't ignore case. */
+		if (l > n - i)
+		    l = n - i;
+		cdiff = STRNCMP(s1 + i, s2 + i, l);
+		if (cdiff != 0)
+		    return cdiff;
+	    }
+	}
+    }
+    return 0;
+}
+
+/*
+ * "g8": show bytes of the UTF-8 char under the cursor.  Doesn't matter what
+ * 'encoding' has been set to.
+ */
+    void
+show_utf8(void)
+{
+    int		len;
+    int		rlen = 0;
+    char_u	*line;
+    int		clen;
+    int		i;
+
+    /* Get the byte length of the char under the cursor, including composing
+     * characters. */
+    line = ml_get_cursor();
+    len = utfc_ptr2len(line);
+    if (len == 0)
+    {
+	msg("NUL");
+	return;
+    }
+
+    clen = 0;
+    for (i = 0; i < len; ++i)
+    {
+	if (clen == 0)
+	{
+	    /* start of (composing) character, get its length */
+	    if (i > 0)
+	    {
+		STRCPY(IObuff + rlen, "+ ");
+		rlen += 2;
+	    }
+	    clen = utf_ptr2len(line + i);
+	}
+	sprintf((char *)IObuff + rlen, "%02x ",
+		(line[i] == NL) ? NUL : line[i]);  /* NUL is stored as NL */
+	--clen;
+	rlen += (int)STRLEN(IObuff + rlen);
+	if (rlen > IOSIZE - 20)
+	    break;
+    }
+
+    msg((char *)IObuff);
+}
+
+/*
+ * mb_head_off() function pointer.
+ * Return offset from "p" to the first byte of the character it points into.
+ * If "p" points to the NUL at the end of the string return 0.
+ * Returns 0 when already at the first byte of a character.
+ */
+    int
+latin_head_off(char_u *base UNUSED, char_u *p UNUSED)
+{
+    return 0;
+}
+
+    int
+dbcs_head_off(char_u *base, char_u *p)
+{
+    char_u	*q;
+
+    /* It can't be a trailing byte when not using DBCS, at the start of the
+     * string or the previous byte can't start a double-byte. */
+    if (p <= base || MB_BYTE2LEN(p[-1]) == 1 || *p == NUL)
+	return 0;
+
+    /* This is slow: need to start at the base and go forward until the
+     * byte we are looking for.  Return 1 when we went past it, 0 otherwise. */
+    q = base;
+    while (q < p)
+	q += dbcs_ptr2len(q);
+    return (q == p) ? 0 : 1;
+}
+
+/*
+ * Special version of dbcs_head_off() that works for ScreenLines[], where
+ * single-width DBCS_JPNU characters are stored separately.
+ */
+    int
+dbcs_screen_head_off(char_u *base, char_u *p)
+{
+    char_u	*q;
+
+    /* It can't be a trailing byte when not using DBCS, at the start of the
+     * string or the previous byte can't start a double-byte.
+     * For euc-jp an 0x8e byte in the previous cell always means we have a
+     * lead byte in the current cell. */
+    if (p <= base
+	    || (enc_dbcs == DBCS_JPNU && p[-1] == 0x8e)
+	    || MB_BYTE2LEN(p[-1]) == 1
+	    || *p == NUL)
+	return 0;
+
+    /* This is slow: need to start at the base and go forward until the
+     * byte we are looking for.  Return 1 when we went past it, 0 otherwise.
+     * For DBCS_JPNU look out for 0x8e, which means the second byte is not
+     * stored as the next byte. */
+    q = base;
+    while (q < p)
+    {
+	if (enc_dbcs == DBCS_JPNU && *q == 0x8e)
+	    ++q;
+	else
+	    q += dbcs_ptr2len(q);
+    }
+    return (q == p) ? 0 : 1;
+}
+
+    int
+utf_head_off(char_u *base, char_u *p)
+{
+    char_u	*q;
+    char_u	*s;
+    int		c;
+    int		len;
+#ifdef FEAT_ARABIC
+    char_u	*j;
+#endif
+
+    if (*p < 0x80)		/* be quick for ASCII */
+	return 0;
+
+    /* Skip backwards over trailing bytes: 10xx.xxxx
+     * Skip backwards again if on a composing char. */
+    for (q = p; ; --q)
+    {
+	/* Move s to the last byte of this char. */
+	for (s = q; (s[1] & 0xc0) == 0x80; ++s)
+	    ;
+	/* Move q to the first byte of this char. */
+	while (q > base && (*q & 0xc0) == 0x80)
+	    --q;
+	/* Check for illegal sequence. Do allow an illegal byte after where we
+	 * started. */
+	len = utf8len_tab[*q];
+	if (len != (int)(s - q + 1) && len != (int)(p - q + 1))
+	    return 0;
+
+	if (q <= base)
+	    break;
+
+	c = utf_ptr2char(q);
+	if (utf_iscomposing(c))
+	    continue;
+
+#ifdef FEAT_ARABIC
+	if (arabic_maycombine(c))
+	{
+	    /* Advance to get a sneak-peak at the next char */
+	    j = q;
+	    --j;
+	    /* Move j to the first byte of this char. */
+	    while (j > base && (*j & 0xc0) == 0x80)
+		--j;
+	    if (arabic_combine(utf_ptr2char(j), c))
+		continue;
+	}
+#endif
+	break;
+    }
+
+    return (int)(p - q);
+}
+
+/*
+ * Copy a character from "*fp" to "*tp" and advance the pointers.
+ */
+    void
+mb_copy_char(char_u **fp, char_u **tp)
+{
+    int	    l = (*mb_ptr2len)(*fp);
+
+    mch_memmove(*tp, *fp, (size_t)l);
+    *tp += l;
+    *fp += l;
+}
+
+/*
+ * Return the offset from "p" to the first byte of a character.  When "p" is
+ * at the start of a character 0 is returned, otherwise the offset to the next
+ * character.  Can start anywhere in a stream of bytes.
+ */
+    int
+mb_off_next(char_u *base, char_u *p)
+{
+    int		i;
+    int		j;
+
+    if (enc_utf8)
+    {
+	if (*p < 0x80)		/* be quick for ASCII */
+	    return 0;
+
+	/* Find the next character that isn't 10xx.xxxx */
+	for (i = 0; (p[i] & 0xc0) == 0x80; ++i)
+	    ;
+	if (i > 0)
+	{
+	    /* Check for illegal sequence. */
+	    for (j = 0; p - j > base; ++j)
+		if ((p[-j] & 0xc0) != 0x80)
+		    break;
+	    if (utf8len_tab[p[-j]] != i + j)
+		return 0;
+	}
+	return i;
+    }
+
+    /* Only need to check if we're on a trail byte, it doesn't matter if we
+     * want the offset to the next or current character. */
+    return (*mb_head_off)(base, p);
+}
+
+/*
+ * Return the offset from "p" to the last byte of the character it points
+ * into.  Can start anywhere in a stream of bytes.
+ */
+    int
+mb_tail_off(char_u *base, char_u *p)
+{
+    int		i;
+    int		j;
+
+    if (*p == NUL)
+	return 0;
+
+    if (enc_utf8)
+    {
+	/* Find the last character that is 10xx.xxxx */
+	for (i = 0; (p[i + 1] & 0xc0) == 0x80; ++i)
+	    ;
+	/* Check for illegal sequence. */
+	for (j = 0; p - j > base; ++j)
+	    if ((p[-j] & 0xc0) != 0x80)
+		break;
+	if (utf8len_tab[p[-j]] != i + j + 1)
+	    return 0;
+	return i;
+    }
+
+    /* It can't be the first byte if a double-byte when not using DBCS, at the
+     * end of the string or the byte can't start a double-byte. */
+    if (enc_dbcs == 0 || p[1] == NUL || MB_BYTE2LEN(*p) == 1)
+	return 0;
+
+    /* Return 1 when on the lead byte, 0 when on the tail byte. */
+    return 1 - dbcs_head_off(base, p);
+}
+
+/*
+ * Find the next illegal byte sequence.
+ */
+    void
+utf_find_illegal(void)
+{
+    pos_T	pos = curwin->w_cursor;
+    char_u	*p;
+    int		len;
+    vimconv_T	vimconv;
+    char_u	*tofree = NULL;
+
+    vimconv.vc_type = CONV_NONE;
+    if (enc_utf8 && (enc_canon_props(curbuf->b_p_fenc) & ENC_8BIT))
+    {
+	/* 'encoding' is "utf-8" but we are editing a 8-bit encoded file,
+	 * possibly a utf-8 file with illegal bytes.  Setup for conversion
+	 * from utf-8 to 'fileencoding'. */
+	convert_setup(&vimconv, p_enc, curbuf->b_p_fenc);
+    }
+
+    curwin->w_cursor.coladd = 0;
+    for (;;)
+    {
+	p = ml_get_cursor();
+	if (vimconv.vc_type != CONV_NONE)
+	{
+	    vim_free(tofree);
+	    tofree = string_convert(&vimconv, p, NULL);
+	    if (tofree == NULL)
+		break;
+	    p = tofree;
+	}
+
+	while (*p != NUL)
+	{
+	    /* Illegal means that there are not enough trail bytes (checked by
+	     * utf_ptr2len()) or too many of them (overlong sequence). */
+	    len = utf_ptr2len(p);
+	    if (*p >= 0x80 && (len == 1
+				     || utf_char2len(utf_ptr2char(p)) != len))
+	    {
+		if (vimconv.vc_type == CONV_NONE)
+		    curwin->w_cursor.col += (colnr_T)(p - ml_get_cursor());
+		else
+		{
+		    int	    l;
+
+		    len = (int)(p - tofree);
+		    for (p = ml_get_cursor(); *p != NUL && len-- > 0; p += l)
+		    {
+			l = utf_ptr2len(p);
+			curwin->w_cursor.col += l;
+		    }
+		}
+		goto theend;
+	    }
+	    p += len;
+	}
+	if (curwin->w_cursor.lnum == curbuf->b_ml.ml_line_count)
+	    break;
+	++curwin->w_cursor.lnum;
+	curwin->w_cursor.col = 0;
+    }
+
+    /* didn't find it: don't move and beep */
+    curwin->w_cursor = pos;
+    beep_flush();
+
+theend:
+    vim_free(tofree);
+    convert_setup(&vimconv, NULL, NULL);
+}
+
+#if defined(FEAT_GUI_GTK) || defined(PROTO)
+/*
+ * Return TRUE if string "s" is a valid utf-8 string.
+ * When "end" is NULL stop at the first NUL.
+ * When "end" is positive stop there.
+ */
+    int
+utf_valid_string(char_u *s, char_u *end)
+{
+    int		l;
+    char_u	*p = s;
+
+    while (end == NULL ? *p != NUL : p < end)
+    {
+	l = utf8len_tab_zero[*p];
+	if (l == 0)
+	    return FALSE;	/* invalid lead byte */
+	if (end != NULL && p + l > end)
+	    return FALSE;	/* incomplete byte sequence */
+	++p;
+	while (--l > 0)
+	    if ((*p++ & 0xc0) != 0x80)
+		return FALSE;	/* invalid trail byte */
+    }
+    return TRUE;
+}
+#endif
+
+#if defined(FEAT_GUI) || defined(PROTO)
+/*
+ * Special version of mb_tail_off() for use in ScreenLines[].
+ */
+    int
+dbcs_screen_tail_off(char_u *base, char_u *p)
+{
+    /* It can't be the first byte if a double-byte when not using DBCS, at the
+     * end of the string or the byte can't start a double-byte.
+     * For euc-jp an 0x8e byte always means we have a lead byte in the current
+     * cell. */
+    if (*p == NUL || p[1] == NUL
+	    || (enc_dbcs == DBCS_JPNU && *p == 0x8e)
+	    || MB_BYTE2LEN(*p) == 1)
+	return 0;
+
+    /* Return 1 when on the lead byte, 0 when on the tail byte. */
+    return 1 - dbcs_screen_head_off(base, p);
+}
+#endif
+
+/*
+ * If the cursor moves on an trail byte, set the cursor on the lead byte.
+ * Thus it moves left if necessary.
+ * Return TRUE when the cursor was adjusted.
+ */
+    void
+mb_adjust_cursor(void)
+{
+    mb_adjustpos(curbuf, &curwin->w_cursor);
+}
+
+/*
+ * Adjust position "*lp" to point to the first byte of a multi-byte character.
+ * If it points to a tail byte it's moved backwards to the head byte.
+ */
+    void
+mb_adjustpos(buf_T *buf, pos_T *lp)
+{
+    char_u	*p;
+
+    if (lp->col > 0 || lp->coladd > 1)
+    {
+	p = ml_get_buf(buf, lp->lnum, FALSE);
+	if (*p == NUL || (int)STRLEN(p) < lp->col)
+	    lp->col = 0;
+	else
+	    lp->col -= (*mb_head_off)(p, p + lp->col);
+	/* Reset "coladd" when the cursor would be on the right half of a
+	 * double-wide character. */
+	if (lp->coladd == 1
+		&& p[lp->col] != TAB
+		&& vim_isprintc((*mb_ptr2char)(p + lp->col))
+		&& ptr2cells(p + lp->col) > 1)
+	    lp->coladd = 0;
+    }
+}
+
+/*
+ * Return a pointer to the character before "*p", if there is one.
+ */
+    char_u *
+mb_prevptr(
+    char_u *line,	/* start of the string */
+    char_u *p)
+{
+    if (p > line)
+	MB_PTR_BACK(line, p);
+    return p;
+}
+
+/*
+ * Return the character length of "str".  Each multi-byte character (with
+ * following composing characters) counts as one.
+ */
+    int
+mb_charlen(char_u *str)
+{
+    char_u	*p = str;
+    int		count;
+
+    if (p == NULL)
+	return 0;
+
+    for (count = 0; *p != NUL; count++)
+	p += (*mb_ptr2len)(p);
+
+    return count;
+}
+
+#if defined(FEAT_SPELL) || defined(PROTO)
+/*
+ * Like mb_charlen() but for a string with specified length.
+ */
+    int
+mb_charlen_len(char_u *str, int len)
+{
+    char_u	*p = str;
+    int		count;
+
+    for (count = 0; *p != NUL && p < str + len; count++)
+	p += (*mb_ptr2len)(p);
+
+    return count;
+}
+#endif
+
+/*
+ * Try to un-escape a multi-byte character.
+ * Used for the "to" and "from" part of a mapping.
+ * Return the un-escaped string if it is a multi-byte character, and advance
+ * "pp" to just after the bytes that formed it.
+ * Return NULL if no multi-byte char was found.
+ */
+    char_u *
+mb_unescape(char_u **pp)
+{
+    static char_u	buf[6];
+    int			n;
+    int			m = 0;
+    char_u		*str = *pp;
+
+    /* Must translate K_SPECIAL KS_SPECIAL KE_FILLER to K_SPECIAL and CSI
+     * KS_EXTRA KE_CSI to CSI.
+     * Maximum length of a utf-8 character is 4 bytes. */
+    for (n = 0; str[n] != NUL && m < 4; ++n)
+    {
+	if (str[n] == K_SPECIAL
+		&& str[n + 1] == KS_SPECIAL
+		&& str[n + 2] == KE_FILLER)
+	{
+	    buf[m++] = K_SPECIAL;
+	    n += 2;
+	}
+	else if ((str[n] == K_SPECIAL
+# ifdef FEAT_GUI
+		    || str[n] == CSI
+# endif
+		 )
+		&& str[n + 1] == KS_EXTRA
+		&& str[n + 2] == (int)KE_CSI)
+	{
+	    buf[m++] = CSI;
+	    n += 2;
+	}
+	else if (str[n] == K_SPECIAL
+# ifdef FEAT_GUI
+		|| str[n] == CSI
+# endif
+		)
+	    break;		/* a special key can't be a multibyte char */
+	else
+	    buf[m++] = str[n];
+	buf[m] = NUL;
+
+	/* Return a multi-byte character if it's found.  An illegal sequence
+	 * will result in a 1 here. */
+	if ((*mb_ptr2len)(buf) > 1)
+	{
+	    *pp = str + n + 1;
+	    return buf;
+	}
+
+	/* Bail out quickly for ASCII. */
+	if (buf[0] < 128)
+	    break;
+    }
+    return NULL;
+}
+
+/*
+ * Return TRUE if the character at "row"/"col" on the screen is the left side
+ * of a double-width character.
+ * Caller must make sure "row" and "col" are not invalid!
+ */
+    int
+mb_lefthalve(int row, int col)
+{
+#ifdef FEAT_HANGULIN
+    if (composing_hangul)
+	return TRUE;
+#endif
+    return (*mb_off2cells)(LineOffset[row] + col,
+					LineOffset[row] + screen_Columns) > 1;
+}
+
+/*
+ * Correct a position on the screen, if it's the right half of a double-wide
+ * char move it to the left half.  Returns the corrected column.
+ */
+    int
+mb_fix_col(int col, int row)
+{
+    col = check_col(col);
+    row = check_row(row);
+    if (has_mbyte && ScreenLines != NULL && col > 0
+	    && ((enc_dbcs
+		    && ScreenLines[LineOffset[row] + col] != NUL
+		    && dbcs_screen_head_off(ScreenLines + LineOffset[row],
+					 ScreenLines + LineOffset[row] + col))
+		|| (enc_utf8 && ScreenLines[LineOffset[row] + col] == 0)))
+	return col - 1;
+    return col;
+}
+
+static int enc_alias_search(char_u *name);
+
+/*
+ * Skip the Vim specific head of a 'encoding' name.
+ */
+    char_u *
+enc_skip(char_u *p)
+{
+    if (STRNCMP(p, "2byte-", 6) == 0)
+	return p + 6;
+    if (STRNCMP(p, "8bit-", 5) == 0)
+	return p + 5;
+    return p;
+}
+
+/*
+ * Find the canonical name for encoding "enc".
+ * When the name isn't recognized, returns "enc" itself, but with all lower
+ * case characters and '_' replaced with '-'.
+ * Returns an allocated string.  NULL for out-of-memory.
+ */
+    char_u *
+enc_canonize(char_u *enc)
+{
+    char_u	*r;
+    char_u	*p, *s;
+    int		i;
+
+    if (STRCMP(enc, "default") == 0)
+    {
+	/* Use the default encoding as it's found by set_init_1(). */
+	r = get_encoding_default();
+	if (r == NULL)
+	    r = (char_u *)"latin1";
+	return vim_strsave(r);
+    }
+
+    /* copy "enc" to allocated memory, with room for two '-' */
+    r = alloc((unsigned)(STRLEN(enc) + 3));
+    if (r != NULL)
+    {
+	/* Make it all lower case and replace '_' with '-'. */
+	p = r;
+	for (s = enc; *s != NUL; ++s)
+	{
+	    if (*s == '_')
+		*p++ = '-';
+	    else
+		*p++ = TOLOWER_ASC(*s);
+	}
+	*p = NUL;
+
+	/* Skip "2byte-" and "8bit-". */
+	p = enc_skip(r);
+
+	/* Change "microsoft-cp" to "cp".  Used in some spell files. */
+	if (STRNCMP(p, "microsoft-cp", 12) == 0)
+	    STRMOVE(p, p + 10);
+
+	/* "iso8859" -> "iso-8859" */
+	if (STRNCMP(p, "iso8859", 7) == 0)
+	{
+	    STRMOVE(p + 4, p + 3);
+	    p[3] = '-';
+	}
+
+	/* "iso-8859n" -> "iso-8859-n" */
+	if (STRNCMP(p, "iso-8859", 8) == 0 && p[8] != '-')
+	{
+	    STRMOVE(p + 9, p + 8);
+	    p[8] = '-';
+	}
+
+	/* "latin-N" -> "latinN" */
+	if (STRNCMP(p, "latin-", 6) == 0)
+	    STRMOVE(p + 5, p + 6);
+
+	if (enc_canon_search(p) >= 0)
+	{
+	    /* canonical name can be used unmodified */
+	    if (p != r)
+		STRMOVE(r, p);
+	}
+	else if ((i = enc_alias_search(p)) >= 0)
+	{
+	    /* alias recognized, get canonical name */
+	    vim_free(r);
+	    r = vim_strsave((char_u *)enc_canon_table[i].name);
+	}
+    }
+    return r;
+}
+
+/*
+ * Search for an encoding alias of "name".
+ * Returns -1 when not found.
+ */
+    static int
+enc_alias_search(char_u *name)
+{
+    int		i;
+
+    for (i = 0; enc_alias_table[i].name != NULL; ++i)
+	if (STRCMP(name, enc_alias_table[i].name) == 0)
+	    return enc_alias_table[i].canon;
+    return -1;
+}
+
+
+#ifdef HAVE_LANGINFO_H
+# include <langinfo.h>
+#endif
+
+#ifndef FEAT_GUI_W32
+/*
+ * Get the canonicalized encoding from the specified locale string "locale"
+ * or from the environment variables LC_ALL, LC_CTYPE and LANG.
+ * Returns an allocated string when successful, NULL when not.
+ */
+    char_u *
+enc_locale_env(char *locale)
+{
+    char	*s = locale;
+    char	*p;
+    int		i;
+    char	buf[50];
+
+    if (s == NULL || *s == NUL)
+	if ((s = getenv("LC_ALL")) == NULL || *s == NUL)
+	    if ((s = getenv("LC_CTYPE")) == NULL || *s == NUL)
+		s = getenv("LANG");
+
+    if (s == NULL || *s == NUL)
+	return NULL;
+
+    /* The most generic locale format is:
+     * language[_territory][.codeset][@modifier][+special][,[sponsor][_revision]]
+     * If there is a '.' remove the part before it.
+     * if there is something after the codeset, remove it.
+     * Make the name lowercase and replace '_' with '-'.
+     * Exception: "ja_JP.EUC" == "euc-jp", "zh_CN.EUC" = "euc-cn",
+     * "ko_KR.EUC" == "euc-kr"
+     */
+    if ((p = (char *)vim_strchr((char_u *)s, '.')) != NULL)
+    {
+	if (p > s + 2 && STRNICMP(p + 1, "EUC", 3) == 0
+			&& !isalnum((int)p[4]) && p[4] != '-' && p[-3] == '_')
+	{
+	    /* copy "XY.EUC" to "euc-XY" to buf[10] */
+	    STRCPY(buf + 10, "euc-");
+	    buf[14] = p[-2];
+	    buf[15] = p[-1];
+	    buf[16] = 0;
+	    s = buf + 10;
+	}
+	else
+	    s = p + 1;
+    }
+    for (i = 0; i < (int)sizeof(buf) - 1 && s[i] != NUL; ++i)
+    {
+	if (s[i] == '_' || s[i] == '-')
+	    buf[i] = '-';
+	else if (isalnum((int)s[i]))
+	    buf[i] = TOLOWER_ASC(s[i]);
+	else
+	    break;
+    }
+    buf[i] = NUL;
+
+    return enc_canonize((char_u *)buf);
+}
+#endif
+
+/*
+ * Get the canonicalized encoding of the current locale.
+ * Returns an allocated string when successful, NULL when not.
+ */
+    char_u *
+enc_locale(void)
+{
+#ifdef WIN3264
+    char	buf[50];
+    long	acp = GetACP();
+
+    if (acp == 1200)
+	STRCPY(buf, "ucs-2le");
+    else if (acp == 1252)	    /* cp1252 is used as latin1 */
+	STRCPY(buf, "latin1");
+    else
+	sprintf(buf, "cp%ld", acp);
+
+    return enc_canonize((char_u *)buf);
+#else
+    char	*s;
+
+# ifdef HAVE_NL_LANGINFO_CODESET
+    if ((s = nl_langinfo(CODESET)) == NULL || *s == NUL)
+# endif
+# if defined(HAVE_LOCALE_H) || defined(X_LOCALE)
+	if ((s = setlocale(LC_CTYPE, NULL)) == NULL || *s == NUL)
+# endif
+	    s = NULL;
+
+    return enc_locale_env(s);
+#endif
+}
+
+# if defined(WIN3264) || defined(PROTO) || defined(FEAT_CYGWIN_WIN32_CLIPBOARD)
+/*
+ * Convert an encoding name to an MS-Windows codepage.
+ * Returns zero if no codepage can be figured out.
+ */
+    int
+encname2codepage(char_u *name)
+{
+    int		cp;
+    char_u	*p = name;
+    int		idx;
+
+    if (STRNCMP(p, "8bit-", 5) == 0)
+	p += 5;
+    else if (STRNCMP(p_enc, "2byte-", 6) == 0)
+	p += 6;
+
+    if (p[0] == 'c' && p[1] == 'p')
+	cp = atoi((char *)p + 2);
+    else if ((idx = enc_canon_search(p)) >= 0)
+	cp = enc_canon_table[idx].codepage;
+    else
+	return 0;
+    if (IsValidCodePage(cp))
+	return cp;
+    return 0;
+}
+# endif
+
+# if defined(USE_ICONV) || defined(PROTO)
+
+/*
+ * Call iconv_open() with a check if iconv() works properly (there are broken
+ * versions).
+ * Returns (void *)-1 if failed.
+ * (should return iconv_t, but that causes problems with prototypes).
+ */
+    void *
+my_iconv_open(char_u *to, char_u *from)
+{
+    iconv_t	fd;
+#define ICONV_TESTLEN 400
+    char_u	tobuf[ICONV_TESTLEN];
+    char	*p;
+    size_t	tolen;
+    static int	iconv_ok = -1;
+
+    if (iconv_ok == FALSE)
+	return (void *)-1;	/* detected a broken iconv() previously */
+
+#ifdef DYNAMIC_ICONV
+    /* Check if the iconv.dll can be found. */
+    if (!iconv_enabled(TRUE))
+	return (void *)-1;
+#endif
+
+    fd = iconv_open((char *)enc_skip(to), (char *)enc_skip(from));
+
+    if (fd != (iconv_t)-1 && iconv_ok == -1)
+    {
+	/*
+	 * Do a dummy iconv() call to check if it actually works.  There is a
+	 * version of iconv() on Linux that is broken.  We can't ignore it,
+	 * because it's wide-spread.  The symptoms are that after outputting
+	 * the initial shift state the "to" pointer is NULL and conversion
+	 * stops for no apparent reason after about 8160 characters.
+	 */
+	p = (char *)tobuf;
+	tolen = ICONV_TESTLEN;
+	(void)iconv(fd, NULL, NULL, &p, &tolen);
+	if (p == NULL)
+	{
+	    iconv_ok = FALSE;
+	    iconv_close(fd);
+	    fd = (iconv_t)-1;
+	}
+	else
+	    iconv_ok = TRUE;
+    }
+
+    return (void *)fd;
+}
+
+/*
+ * Convert the string "str[slen]" with iconv().
+ * If "unconvlenp" is not NULL handle the string ending in an incomplete
+ * sequence and set "*unconvlenp" to the length of it.
+ * Returns the converted string in allocated memory.  NULL for an error.
+ * If resultlenp is not NULL, sets it to the result length in bytes.
+ */
+    static char_u *
+iconv_string(
+    vimconv_T	*vcp,
+    char_u	*str,
+    int		slen,
+    int		*unconvlenp,
+    int		*resultlenp)
+{
+    const char	*from;
+    size_t	fromlen;
+    char	*to;
+    size_t	tolen;
+    size_t	len = 0;
+    size_t	done = 0;
+    char_u	*result = NULL;
+    char_u	*p;
+    int		l;
+
+    from = (char *)str;
+    fromlen = slen;
+    for (;;)
+    {
+	if (len == 0 || ICONV_ERRNO == ICONV_E2BIG)
+	{
+	    /* Allocate enough room for most conversions.  When re-allocating
+	     * increase the buffer size. */
+	    len = len + fromlen * 2 + 40;
+	    p = alloc((unsigned)len);
+	    if (p != NULL && done > 0)
+		mch_memmove(p, result, done);
+	    vim_free(result);
+	    result = p;
+	    if (result == NULL)	/* out of memory */
+		break;
+	}
+
+	to = (char *)result + done;
+	tolen = len - done - 2;
+	/* Avoid a warning for systems with a wrong iconv() prototype by
+	 * casting the second argument to void *. */
+	if (iconv(vcp->vc_fd, (void *)&from, &fromlen, &to, &tolen)
+								!= (size_t)-1)
+	{
+	    /* Finished, append a NUL. */
+	    *to = NUL;
+	    break;
+	}
+
+	/* Check both ICONV_EINVAL and EINVAL, because the dynamically loaded
+	 * iconv library may use one of them. */
+	if (!vcp->vc_fail && unconvlenp != NULL
+		&& (ICONV_ERRNO == ICONV_EINVAL || ICONV_ERRNO == EINVAL))
+	{
+	    /* Handle an incomplete sequence at the end. */
+	    *to = NUL;
+	    *unconvlenp = (int)fromlen;
+	    break;
+	}
+
+	/* Check both ICONV_EILSEQ and EILSEQ, because the dynamically loaded
+	 * iconv library may use one of them. */
+	else if (!vcp->vc_fail
+		&& (ICONV_ERRNO == ICONV_EILSEQ || ICONV_ERRNO == EILSEQ
+		    || ICONV_ERRNO == ICONV_EINVAL || ICONV_ERRNO == EINVAL))
+	{
+	    /* Can't convert: insert a '?' and skip a character.  This assumes
+	     * conversion from 'encoding' to something else.  In other
+	     * situations we don't know what to skip anyway. */
+	    *to++ = '?';
+	    if ((*mb_ptr2cells)((char_u *)from) > 1)
+		*to++ = '?';
+	    if (enc_utf8)
+		l = utfc_ptr2len_len((char_u *)from, (int)fromlen);
+	    else
+	    {
+		l = (*mb_ptr2len)((char_u *)from);
+		if (l > (int)fromlen)
+		    l = (int)fromlen;
+	    }
+	    from += l;
+	    fromlen -= l;
+	}
+	else if (ICONV_ERRNO != ICONV_E2BIG)
+	{
+	    /* conversion failed */
+	    VIM_CLEAR(result);
+	    break;
+	}
+	/* Not enough room or skipping illegal sequence. */
+	done = to - (char *)result;
+    }
+
+    if (resultlenp != NULL && result != NULL)
+	*resultlenp = (int)(to - (char *)result);
+    return result;
+}
+
+#  if defined(DYNAMIC_ICONV) || defined(PROTO)
+/*
+ * Dynamically load the "iconv.dll" on Win32.
+ */
+
+#   ifndef DYNAMIC_ICONV	    /* must be generating prototypes */
+#    define HINSTANCE int
+#   endif
+static HINSTANCE hIconvDLL = 0;
+static HINSTANCE hMsvcrtDLL = 0;
+
+#   ifndef DYNAMIC_ICONV_DLL
+#    define DYNAMIC_ICONV_DLL "iconv.dll"
+#    define DYNAMIC_ICONV_DLL_ALT1 "libiconv.dll"
+#    define DYNAMIC_ICONV_DLL_ALT2 "libiconv2.dll"
+#    define DYNAMIC_ICONV_DLL_ALT3 "libiconv-2.dll"
+#   endif
+#   ifndef DYNAMIC_MSVCRT_DLL
+#    define DYNAMIC_MSVCRT_DLL "msvcrt.dll"
+#   endif
+
+/*
+ * Try opening the iconv.dll and return TRUE if iconv() can be used.
+ */
+    int
+iconv_enabled(int verbose)
+{
+    if (hIconvDLL != 0 && hMsvcrtDLL != 0)
+	return TRUE;
+
+    /* The iconv DLL file goes under different names, try them all.
+     * Do the "2" version first, it's newer. */
+#ifdef DYNAMIC_ICONV_DLL_ALT2
+    if (hIconvDLL == 0)
+	hIconvDLL = vimLoadLib(DYNAMIC_ICONV_DLL_ALT2);
+#endif
+#ifdef DYNAMIC_ICONV_DLL_ALT3
+    if (hIconvDLL == 0)
+	hIconvDLL = vimLoadLib(DYNAMIC_ICONV_DLL_ALT3);
+#endif
+    if (hIconvDLL == 0)
+	hIconvDLL = vimLoadLib(DYNAMIC_ICONV_DLL);
+#ifdef DYNAMIC_ICONV_DLL_ALT1
+    if (hIconvDLL == 0)
+	hIconvDLL = vimLoadLib(DYNAMIC_ICONV_DLL_ALT1);
+#endif
+
+    if (hIconvDLL != 0)
+	hMsvcrtDLL = vimLoadLib(DYNAMIC_MSVCRT_DLL);
+    if (hIconvDLL == 0 || hMsvcrtDLL == 0)
+    {
+	/* Only give the message when 'verbose' is set, otherwise it might be
+	 * done whenever a conversion is attempted. */
+	if (verbose && p_verbose > 0)
+	{
+	    verbose_enter();
+	    semsg(_(e_loadlib),
+		    hIconvDLL == 0 ? DYNAMIC_ICONV_DLL : DYNAMIC_MSVCRT_DLL);
+	    verbose_leave();
+	}
+	iconv_end();
+	return FALSE;
+    }
+
+    iconv	= (void *)GetProcAddress(hIconvDLL, "libiconv");
+    iconv_open	= (void *)GetProcAddress(hIconvDLL, "libiconv_open");
+    iconv_close	= (void *)GetProcAddress(hIconvDLL, "libiconv_close");
+    iconvctl	= (void *)GetProcAddress(hIconvDLL, "libiconvctl");
+    iconv_errno	= get_dll_import_func(hIconvDLL, "_errno");
+    if (iconv_errno == NULL)
+	iconv_errno = (void *)GetProcAddress(hMsvcrtDLL, "_errno");
+    if (iconv == NULL || iconv_open == NULL || iconv_close == NULL
+	    || iconvctl == NULL || iconv_errno == NULL)
+    {
+	iconv_end();
+	if (verbose && p_verbose > 0)
+	{
+	    verbose_enter();
+	    semsg(_(e_loadfunc), "for libiconv");
+	    verbose_leave();
+	}
+	return FALSE;
+    }
+    return TRUE;
+}
+
+    void
+iconv_end(void)
+{
+    /* Don't use iconv() when inputting or outputting characters. */
+    if (input_conv.vc_type == CONV_ICONV)
+	convert_setup(&input_conv, NULL, NULL);
+    if (output_conv.vc_type == CONV_ICONV)
+	convert_setup(&output_conv, NULL, NULL);
+
+    if (hIconvDLL != 0)
+	FreeLibrary(hIconvDLL);
+    if (hMsvcrtDLL != 0)
+	FreeLibrary(hMsvcrtDLL);
+    hIconvDLL = 0;
+    hMsvcrtDLL = 0;
+}
+#  endif /* DYNAMIC_ICONV */
+# endif /* USE_ICONV */
+
+
+#ifdef FEAT_GUI
+# define USE_IMACTIVATEFUNC (!gui.in_use && *p_imaf != NUL)
+# define USE_IMSTATUSFUNC (!gui.in_use && *p_imsf != NUL)
+#else
+# define USE_IMACTIVATEFUNC (*p_imaf != NUL)
+# define USE_IMSTATUSFUNC (*p_imsf != NUL)
+#endif
+
+#if defined(FEAT_EVAL) && (defined(FEAT_XIM) || defined(IME_WITHOUT_XIM))
+    static void
+call_imactivatefunc(int active)
+{
+    typval_T argv[2];
+
+    argv[0].v_type = VAR_NUMBER;
+    argv[0].vval.v_number = active ? 1 : 0;
+    argv[1].v_type = VAR_UNKNOWN;
+    (void)call_func_retnr(p_imaf, 1, argv);
+}
+
+    static int
+call_imstatusfunc(void)
+{
+    int is_active;
+
+    /* FIXME: Don't execute user function in unsafe situation. */
+    if (exiting || is_autocmd_blocked())
+	return FALSE;
+    /* FIXME: :py print 'xxx' is shown duplicate result.
+     * Use silent to avoid it. */
+    ++msg_silent;
+    is_active = call_func_retnr(p_imsf, 0, NULL);
+    --msg_silent;
+    return (is_active > 0);
+}
+#endif
+
+#if defined(FEAT_XIM) || defined(PROTO)
+
+# if defined(FEAT_GUI_GTK) || defined(PROTO)
+static int xim_has_preediting INIT(= FALSE);  /* IM current status */
+
+/*
+ * Set preedit_start_col to the current cursor position.
+ */
+    static void
+init_preedit_start_col(void)
+{
+    if (State & CMDLINE)
+	preedit_start_col = cmdline_getvcol_cursor();
+    else if (curwin != NULL && curwin->w_buffer != NULL)
+	getvcol(curwin, &curwin->w_cursor, &preedit_start_col, NULL, NULL);
+    /* Prevent that preediting marks the buffer as changed. */
+    xim_changed_while_preediting = curbuf->b_changed;
+}
+
+static int im_is_active	       = FALSE;	/* IM is enabled for current mode    */
+static int preedit_is_active   = FALSE;
+static int im_preedit_cursor   = 0;	/* cursor offset in characters       */
+static int im_preedit_trailing = 0;	/* number of characters after cursor */
+
+static unsigned long im_commit_handler_id  = 0;
+static unsigned int  im_activatekey_keyval = GDK_VoidSymbol;
+static unsigned int  im_activatekey_state  = 0;
+
+static GtkWidget *preedit_window = NULL;
+static GtkWidget *preedit_label = NULL;
+
+static void im_preedit_window_set_position(void);
+
+    void
+im_set_active(int active)
+{
+    int was_active;
+
+    was_active = !!im_get_status();
+    im_is_active = (active && !p_imdisable);
+
+    if (im_is_active != was_active)
+	xim_reset();
+}
+
+    void
+xim_set_focus(int focus)
+{
+    if (xic != NULL)
+    {
+	if (focus)
+	    gtk_im_context_focus_in(xic);
+	else
+	    gtk_im_context_focus_out(xic);
+    }
+}
+
+    void
+im_set_position(int row, int col)
+{
+    if (xic != NULL)
+    {
+	GdkRectangle area;
+
+	area.x = FILL_X(col);
+	area.y = FILL_Y(row);
+	area.width  = gui.char_width * (mb_lefthalve(row, col) ? 2 : 1);
+	area.height = gui.char_height;
+
+	gtk_im_context_set_cursor_location(xic, &area);
+
+	if (p_imst == IM_OVER_THE_SPOT)
+	    im_preedit_window_set_position();
+    }
+}
+
+#  if 0 || defined(PROTO) /* apparently only used in gui_x11.c */
+    void
+xim_set_preedit(void)
+{
+    im_set_position(gui.row, gui.col);
+}
+#  endif
+
+    static void
+im_add_to_input(char_u *str, int len)
+{
+    /* Convert from 'termencoding' (always "utf-8") to 'encoding' */
+    if (input_conv.vc_type != CONV_NONE)
+    {
+	str = string_convert(&input_conv, str, &len);
+	g_return_if_fail(str != NULL);
+    }
+
+    add_to_input_buf_csi(str, len);
+
+    if (input_conv.vc_type != CONV_NONE)
+	vim_free(str);
+
+    if (p_mh) /* blank out the pointer if necessary */
+	gui_mch_mousehide(TRUE);
+}
+
+     static void
+im_preedit_window_set_position(void)
+{
+    int x, y, width, height;
+    int screen_x, screen_y, screen_width, screen_height;
+
+    if (preedit_window == NULL)
+	return;
+
+    gui_gtk_get_screen_geom_of_win(gui.drawarea,
+			  &screen_x, &screen_y, &screen_width, &screen_height);
+    gdk_window_get_origin(gtk_widget_get_window(gui.drawarea), &x, &y);
+    gtk_window_get_size(GTK_WINDOW(preedit_window), &width, &height);
+    x = x + FILL_X(gui.col);
+    y = y + FILL_Y(gui.row);
+    if (x + width > screen_x + screen_width)
+	x = screen_x + screen_width - width;
+    if (y + height > screen_y + screen_height)
+	y = screen_y + screen_height - height;
+    gtk_window_move(GTK_WINDOW(preedit_window), x, y);
+}
+
+    static void
+im_preedit_window_open()
+{
+    char *preedit_string;
+#if !GTK_CHECK_VERSION(3,16,0)
+    char buf[8];
+#endif
+    PangoAttrList *attr_list;
+    PangoLayout *layout;
+#if GTK_CHECK_VERSION(3,0,0)
+# if !GTK_CHECK_VERSION(3,16,0)
+    GdkRGBA color;
+# endif
+#else
+    GdkColor color;
+#endif
+    gint w, h;
+
+    if (preedit_window == NULL)
+    {
+	preedit_window = gtk_window_new(GTK_WINDOW_POPUP);
+	gtk_window_set_transient_for(GTK_WINDOW(preedit_window),
+						     GTK_WINDOW(gui.mainwin));
+	preedit_label = gtk_label_new("");
+	gtk_widget_set_name(preedit_label, "vim-gui-preedit-area");
+	gtk_container_add(GTK_CONTAINER(preedit_window), preedit_label);
+    }
+
+#if GTK_CHECK_VERSION(3,16,0)
+    {
+	GtkStyleContext * const context
+				  = gtk_widget_get_style_context(gui.drawarea);
+	GtkCssProvider * const provider = gtk_css_provider_new();
+	gchar		   *css = NULL;
+	const char * const fontname
+			   = pango_font_description_get_family(gui.norm_font);
+	gint	fontsize
+		= pango_font_description_get_size(gui.norm_font) / PANGO_SCALE;
+	gchar	*fontsize_propval = NULL;
+
+	if (!pango_font_description_get_size_is_absolute(gui.norm_font))
+	{
+	    /* fontsize was given in points.  Convert it into that in pixels
+	     * to use with CSS. */
+	    GdkScreen * const screen
+		  = gdk_window_get_screen(gtk_widget_get_window(gui.mainwin));
+	    const gdouble dpi = gdk_screen_get_resolution(screen);
+	    fontsize = dpi * fontsize / 72;
+	}
+	if (fontsize > 0)
+	    fontsize_propval = g_strdup_printf("%dpx", fontsize);
+	else
+	    fontsize_propval = g_strdup_printf("inherit");
+
+	css = g_strdup_printf(
+		"widget#vim-gui-preedit-area {\n"
+		"  font-family: %s,monospace;\n"
+		"  font-size: %s;\n"
+		"  color: #%.2lx%.2lx%.2lx;\n"
+		"  background-color: #%.2lx%.2lx%.2lx;\n"
+		"}\n",
+		fontname != NULL ? fontname : "inherit",
+		fontsize_propval,
+		(gui.norm_pixel >> 16) & 0xff,
+		(gui.norm_pixel >> 8) & 0xff,
+		gui.norm_pixel & 0xff,
+		(gui.back_pixel >> 16) & 0xff,
+		(gui.back_pixel >> 8) & 0xff,
+		gui.back_pixel & 0xff);
+
+	gtk_css_provider_load_from_data(provider, css, -1, NULL);
+	gtk_style_context_add_provider(context,
+				     GTK_STYLE_PROVIDER(provider), G_MAXUINT);
+
+	g_free(css);
+	g_free(fontsize_propval);
+	g_object_unref(provider);
+    }
+#elif GTK_CHECK_VERSION(3,0,0)
+    gtk_widget_override_font(preedit_label, gui.norm_font);
+
+    vim_snprintf(buf, sizeof(buf), "#%06X", gui.norm_pixel);
+    gdk_rgba_parse(&color, buf);
+    gtk_widget_override_color(preedit_label, GTK_STATE_FLAG_NORMAL, &color);
+
+    vim_snprintf(buf, sizeof(buf), "#%06X", gui.back_pixel);
+    gdk_rgba_parse(&color, buf);
+    gtk_widget_override_background_color(preedit_label, GTK_STATE_FLAG_NORMAL,
+								      &color);
+#else
+    gtk_widget_modify_font(preedit_label, gui.norm_font);
+
+    vim_snprintf(buf, sizeof(buf), "#%06X", (unsigned)gui.norm_pixel);
+    gdk_color_parse(buf, &color);
+    gtk_widget_modify_fg(preedit_label, GTK_STATE_NORMAL, &color);
+
+    vim_snprintf(buf, sizeof(buf), "#%06X", (unsigned)gui.back_pixel);
+    gdk_color_parse(buf, &color);
+    gtk_widget_modify_bg(preedit_window, GTK_STATE_NORMAL, &color);
+#endif
+
+    gtk_im_context_get_preedit_string(xic, &preedit_string, &attr_list, NULL);
+
+    if (preedit_string[0] != NUL)
+    {
+	gtk_label_set_text(GTK_LABEL(preedit_label), preedit_string);
+	gtk_label_set_attributes(GTK_LABEL(preedit_label), attr_list);
+
+	layout = gtk_label_get_layout(GTK_LABEL(preedit_label));
+	pango_layout_get_pixel_size(layout, &w, &h);
+	h = MAX(h, gui.char_height);
+	gtk_window_resize(GTK_WINDOW(preedit_window), w, h);
+
+	gtk_widget_show_all(preedit_window);
+
+	im_preedit_window_set_position();
+    }
+
+    g_free(preedit_string);
+    pango_attr_list_unref(attr_list);
+}
+
+    static void
+im_preedit_window_close()
+{
+    if (preedit_window != NULL)
+	gtk_widget_hide(preedit_window);
+}
+
+    static void
+im_show_preedit()
+{
+    im_preedit_window_open();
+
+    if (p_mh) /* blank out the pointer if necessary */
+	gui_mch_mousehide(TRUE);
+}
+
+    static void
+im_delete_preedit(void)
+{
+    char_u bskey[]  = {CSI, 'k', 'b'};
+    char_u delkey[] = {CSI, 'k', 'D'};
+
+    if (p_imst == IM_OVER_THE_SPOT)
+    {
+	im_preedit_window_close();
+	return;
+    }
+
+    if (State & NORMAL
+#ifdef FEAT_TERMINAL
+	    && !term_use_loop()
+#endif
+       )
+    {
+	im_preedit_cursor = 0;
+	return;
+    }
+    for (; im_preedit_cursor > 0; --im_preedit_cursor)
+	add_to_input_buf(bskey, (int)sizeof(bskey));
+
+    for (; im_preedit_trailing > 0; --im_preedit_trailing)
+	add_to_input_buf(delkey, (int)sizeof(delkey));
+}
+
+/*
+ * Move the cursor left by "num_move_back" characters.
+ * Note that ins_left() checks im_is_preediting() to avoid breaking undo for
+ * these K_LEFT keys.
+ */
+    static void
+im_correct_cursor(int num_move_back)
+{
+    char_u backkey[] = {CSI, 'k', 'l'};
+
+    if (State & NORMAL)
+	return;
+#  ifdef FEAT_RIGHTLEFT
+    if ((State & CMDLINE) == 0 && curwin != NULL && curwin->w_p_rl)
+	backkey[2] = 'r';
+#  endif
+    for (; num_move_back > 0; --num_move_back)
+	add_to_input_buf(backkey, (int)sizeof(backkey));
+}
+
+static int xim_expected_char = NUL;
+static int xim_ignored_char = FALSE;
+
+/*
+ * Update the mode and cursor while in an IM callback.
+ */
+    static void
+im_show_info(void)
+{
+    int	    old_vgetc_busy;
+
+    old_vgetc_busy = vgetc_busy;
+    vgetc_busy = TRUE;
+    showmode();
+    vgetc_busy = old_vgetc_busy;
+    if ((State & NORMAL) || (State & INSERT))
+	setcursor();
+    out_flush();
+}
+
+/*
+ * Callback invoked when the user finished preediting.
+ * Put the final string into the input buffer.
+ */
+    static void
+im_commit_cb(GtkIMContext *context UNUSED,
+	     const gchar *str,
+	     gpointer data UNUSED)
+{
+    int		slen = (int)STRLEN(str);
+    int		add_to_input = TRUE;
+    int		clen;
+    int		len = slen;
+    int		commit_with_preedit = TRUE;
+    char_u	*im_str;
+
+#ifdef XIM_DEBUG
+    xim_log("im_commit_cb(): %s\n", str);
+#endif
+
+    if (p_imst == IM_ON_THE_SPOT)
+    {
+	/* The imhangul module doesn't reset the preedit string before
+	 * committing.  Call im_delete_preedit() to work around that. */
+	im_delete_preedit();
+
+	/* Indicate that preediting has finished. */
+	if (preedit_start_col == MAXCOL)
+	{
+	    init_preedit_start_col();
+	    commit_with_preedit = FALSE;
+	}
+
+	/* The thing which setting "preedit_start_col" to MAXCOL means that
+	 * "preedit_start_col" will be set forcedly when calling
+	 * preedit_changed_cb() next time.
+	 * "preedit_start_col" should not reset with MAXCOL on this part. Vim
+	 * is simulating the preediting by using add_to_input_str(). when
+	 * preedit begin immediately before committed, the typebuf is not
+	 * flushed to screen, then it can't get correct "preedit_start_col".
+	 * Thus, it should calculate the cells by adding cells of the committed
+	 * string. */
+	if (input_conv.vc_type != CONV_NONE)
+	{
+	    im_str = string_convert(&input_conv, (char_u *)str, &len);
+	    g_return_if_fail(im_str != NULL);
+	}
+	else
+	    im_str = (char_u *)str;
+
+	clen = mb_string2cells(im_str, len);
+
+	if (input_conv.vc_type != CONV_NONE)
+	    vim_free(im_str);
+	preedit_start_col += clen;
+    }
+
+    /* Is this a single character that matches a keypad key that's just
+     * been pressed?  If so, we don't want it to be entered as such - let
+     * us carry on processing the raw keycode so that it may be used in
+     * mappings as <kSomething>. */
+    if (xim_expected_char != NUL)
+    {
+	/* We're currently processing a keypad or other special key */
+	if (slen == 1 && str[0] == xim_expected_char)
+	{
+	    /* It's a match - don't do it here */
+	    xim_ignored_char = TRUE;
+	    add_to_input = FALSE;
+	}
+	else
+	{
+	    /* Not a match */
+	    xim_ignored_char = FALSE;
+	}
+    }
+
+    if (add_to_input)
+	im_add_to_input((char_u *)str, slen);
+
+    if (p_imst == IM_ON_THE_SPOT)
+    {
+	/* Inserting chars while "im_is_active" is set does not cause a
+	 * change of buffer.  When the chars are committed the buffer must be
+	 * marked as changed. */
+	if (!commit_with_preedit)
+	    preedit_start_col = MAXCOL;
+
+	/* This flag is used in changed() at next call. */
+	xim_changed_while_preediting = TRUE;
+    }
+
+    if (gtk_main_level() > 0)
+	gtk_main_quit();
+}
+
+/*
+ * Callback invoked after start to the preedit.
+ */
+    static void
+im_preedit_start_cb(GtkIMContext *context UNUSED, gpointer data UNUSED)
+{
+#ifdef XIM_DEBUG
+    xim_log("im_preedit_start_cb()\n");
+#endif
+
+    im_is_active = TRUE;
+    preedit_is_active = TRUE;
+    gui_update_cursor(TRUE, FALSE);
+    im_show_info();
+}
+
+/*
+ * Callback invoked after end to the preedit.
+ */
+    static void
+im_preedit_end_cb(GtkIMContext *context UNUSED, gpointer data UNUSED)
+{
+#ifdef XIM_DEBUG
+    xim_log("im_preedit_end_cb()\n");
+#endif
+    im_delete_preedit();
+
+    /* Indicate that preediting has finished */
+    if (p_imst == IM_ON_THE_SPOT)
+	preedit_start_col = MAXCOL;
+    xim_has_preediting = FALSE;
+
+#if 0
+    /* Removal of this line suggested by Takuhiro Nishioka.  Fixes that IM was
+     * switched off unintentionally.  We now use preedit_is_active (added by
+     * SungHyun Nam). */
+    im_is_active = FALSE;
+#endif
+    preedit_is_active = FALSE;
+    gui_update_cursor(TRUE, FALSE);
+    im_show_info();
+}
+
+/*
+ * Callback invoked after changes to the preedit string.  If the preedit
+ * string was empty before, remember the preedit start column so we know
+ * where to apply feedback attributes.  Delete the previous preedit string
+ * if there was one, save the new preedit cursor offset, and put the new
+ * string into the input buffer.
+ *
+ * TODO: The pragmatic "put into input buffer" approach used here has
+ *       several fundamental problems:
+ *
+ * - The characters in the preedit string are subject to remapping.
+ *   That's broken, only the finally committed string should be remapped.
+ *
+ * - There is a race condition involved:  The retrieved value for the
+ *   current cursor position will be wrong if any unprocessed characters
+ *   are still queued in the input buffer.
+ *
+ * - Due to the lack of synchronization between the file buffer in memory
+ *   and any typed characters, it's practically impossible to implement the
+ *   "retrieve_surrounding" and "delete_surrounding" signals reliably.  IM
+ *   modules for languages such as Thai are likely to rely on this feature
+ *   for proper operation.
+ *
+ * Conclusions:  I think support for preediting needs to be moved to the
+ * core parts of Vim.  Ideally, until it has been committed, the preediting
+ * string should only be displayed and not affect the buffer content at all.
+ * The question how to deal with the synchronization issue still remains.
+ * Circumventing the input buffer is probably not desirable.  Anyway, I think
+ * implementing "retrieve_surrounding" is the only hard problem.
+ *
+ * One way to solve all of this in a clean manner would be to queue all key
+ * press/release events "as is" in the input buffer, and apply the IM filtering
+ * at the receiving end of the queue.  This, however, would have a rather large
+ * impact on the code base.  If there is an easy way to force processing of all
+ * remaining input from within the "retrieve_surrounding" signal handler, this
+ * might not be necessary.  Gotta ask on vim-dev for opinions.
+ */
+    static void
+im_preedit_changed_cb(GtkIMContext *context, gpointer data UNUSED)
+{
+    char    *preedit_string = NULL;
+    int	    cursor_index    = 0;
+    int	    num_move_back   = 0;
+    char_u  *str;
+    char_u  *p;
+    int	    i;
+
+    if (p_imst == IM_ON_THE_SPOT)
+	gtk_im_context_get_preedit_string(context,
+					  &preedit_string, NULL,
+					  &cursor_index);
+    else
+	gtk_im_context_get_preedit_string(context,
+					  &preedit_string, NULL,
+					  NULL);
+
+#ifdef XIM_DEBUG
+    xim_log("im_preedit_changed_cb(): %s\n", preedit_string);
+#endif
+
+    g_return_if_fail(preedit_string != NULL); /* just in case */
+
+    if (p_imst == IM_OVER_THE_SPOT)
+    {
+	if (preedit_string[0] == NUL)
+	{
+	    xim_has_preediting = FALSE;
+	    im_delete_preedit();
+	}
+	else
+	{
+	    xim_has_preediting = TRUE;
+	    im_show_preedit();
+	}
+    }
+    else
+    {
+	/* If preedit_start_col is MAXCOL set it to the current cursor position. */
+	if (preedit_start_col == MAXCOL && preedit_string[0] != '\0')
+	{
+	    xim_has_preediting = TRUE;
+
+	    /* Urgh, this breaks if the input buffer isn't empty now */
+	    init_preedit_start_col();
+	}
+	else if (cursor_index == 0 && preedit_string[0] == '\0')
+	{
+	    xim_has_preediting = FALSE;
+
+	    /* If at the start position (after typing backspace)
+	     * preedit_start_col must be reset. */
+	    preedit_start_col = MAXCOL;
+	}
+
+	im_delete_preedit();
+
+	/*
+	 * Compute the end of the preediting area: "preedit_end_col".
+	 * According to the documentation of gtk_im_context_get_preedit_string(),
+	 * the cursor_pos output argument returns the offset in bytes.  This is
+	 * unfortunately not true -- real life shows the offset is in characters,
+	 * and the GTK+ source code agrees with me.  Will file a bug later.
+	 */
+	if (preedit_start_col != MAXCOL)
+	    preedit_end_col = preedit_start_col;
+	str = (char_u *)preedit_string;
+	for (p = str, i = 0; *p != NUL; p += utf_byte2len(*p), ++i)
+	{
+	    int is_composing;
+
+	    is_composing = ((*p & 0x80) != 0 && utf_iscomposing(utf_ptr2char(p)));
+	    /*
+	     * These offsets are used as counters when generating <BS> and <Del>
+	     * to delete the preedit string.  So don't count composing characters
+	     * unless 'delcombine' is enabled.
+	     */
+	    if (!is_composing || p_deco)
+	    {
+		if (i < cursor_index)
+		    ++im_preedit_cursor;
+		else
+		    ++im_preedit_trailing;
+	    }
+	    if (!is_composing && i >= cursor_index)
+	    {
+		/* This is essentially the same as im_preedit_trailing, except
+		 * composing characters are not counted even if p_deco is set. */
+		++num_move_back;
+	    }
+	    if (preedit_start_col != MAXCOL)
+		preedit_end_col += utf_ptr2cells(p);
+	}
+
+	if (p > str)
+	{
+	    im_add_to_input(str, (int)(p - str));
+	    im_correct_cursor(num_move_back);
+	}
+    }
+
+    g_free(preedit_string);
+
+    if (gtk_main_level() > 0)
+	gtk_main_quit();
+}
+
+/*
+ * Translate the Pango attributes at iter to Vim highlighting attributes.
+ * Ignore attributes not supported by Vim highlighting.  This shouldn't have
+ * too much impact -- right now we handle even more attributes than necessary
+ * for the IM modules I tested with.
+ */
+    static int
+translate_pango_attributes(PangoAttrIterator *iter)
+{
+    PangoAttribute  *attr;
+    int		    char_attr = HL_NORMAL;
+
+    attr = pango_attr_iterator_get(iter, PANGO_ATTR_UNDERLINE);
+    if (attr != NULL && ((PangoAttrInt *)attr)->value
+						 != (int)PANGO_UNDERLINE_NONE)
+	char_attr |= HL_UNDERLINE;
+
+    attr = pango_attr_iterator_get(iter, PANGO_ATTR_WEIGHT);
+    if (attr != NULL && ((PangoAttrInt *)attr)->value >= (int)PANGO_WEIGHT_BOLD)
+	char_attr |= HL_BOLD;
+
+    attr = pango_attr_iterator_get(iter, PANGO_ATTR_STYLE);
+    if (attr != NULL && ((PangoAttrInt *)attr)->value
+						   != (int)PANGO_STYLE_NORMAL)
+	char_attr |= HL_ITALIC;
+
+    attr = pango_attr_iterator_get(iter, PANGO_ATTR_BACKGROUND);
+    if (attr != NULL)
+    {
+	const PangoColor *color = &((PangoAttrColor *)attr)->color;
+
+	/* Assume inverse if black background is requested */
+	if ((color->red | color->green | color->blue) == 0)
+	    char_attr |= HL_INVERSE;
+    }
+
+    return char_attr;
+}
+
+/*
+ * Retrieve the highlighting attributes at column col in the preedit string.
+ * Return -1 if not in preediting mode or if col is out of range.
+ */
+    int
+im_get_feedback_attr(int col)
+{
+    char	    *preedit_string = NULL;
+    PangoAttrList   *attr_list	    = NULL;
+    int		    char_attr	    = -1;
+
+    if (xic == NULL)
+	return char_attr;
+
+    gtk_im_context_get_preedit_string(xic, &preedit_string, &attr_list, NULL);
+
+    if (preedit_string != NULL && attr_list != NULL)
+    {
+	int idx;
+
+	/* Get the byte index as used by PangoAttrIterator */
+	for (idx = 0; col > 0 && preedit_string[idx] != '\0'; --col)
+	    idx += utfc_ptr2len((char_u *)preedit_string + idx);
+
+	if (preedit_string[idx] != '\0')
+	{
+	    PangoAttrIterator	*iter;
+	    int			start, end;
+
+	    char_attr = HL_NORMAL;
+	    iter = pango_attr_list_get_iterator(attr_list);
+
+	    /* Extract all relevant attributes from the list. */
+	    do
+	    {
+		pango_attr_iterator_range(iter, &start, &end);
+
+		if (idx >= start && idx < end)
+		    char_attr |= translate_pango_attributes(iter);
+	    }
+	    while (pango_attr_iterator_next(iter));
+
+	    pango_attr_iterator_destroy(iter);
+	}
+    }
+
+    if (attr_list != NULL)
+	pango_attr_list_unref(attr_list);
+    g_free(preedit_string);
+
+    return char_attr;
+}
+
+    void
+xim_init(void)
+{
+#ifdef XIM_DEBUG
+    xim_log("xim_init()\n");
+#endif
+
+    g_return_if_fail(gui.drawarea != NULL);
+    g_return_if_fail(gtk_widget_get_window(gui.drawarea) != NULL);
+
+    xic = gtk_im_multicontext_new();
+    g_object_ref(xic);
+
+    im_commit_handler_id = g_signal_connect(G_OBJECT(xic), "commit",
+					    G_CALLBACK(&im_commit_cb), NULL);
+    g_signal_connect(G_OBJECT(xic), "preedit_changed",
+		     G_CALLBACK(&im_preedit_changed_cb), NULL);
+    g_signal_connect(G_OBJECT(xic), "preedit_start",
+		     G_CALLBACK(&im_preedit_start_cb), NULL);
+    g_signal_connect(G_OBJECT(xic), "preedit_end",
+		     G_CALLBACK(&im_preedit_end_cb), NULL);
+
+    gtk_im_context_set_client_window(xic, gtk_widget_get_window(gui.drawarea));
+}
+
+    void
+im_shutdown(void)
+{
+#ifdef XIM_DEBUG
+    xim_log("im_shutdown()\n");
+#endif
+
+    if (xic != NULL)
+    {
+	gtk_im_context_focus_out(xic);
+	g_object_unref(xic);
+	xic = NULL;
+    }
+    im_is_active = FALSE;
+    im_commit_handler_id = 0;
+    if (p_imst == IM_ON_THE_SPOT)
+	preedit_start_col = MAXCOL;
+    xim_has_preediting = FALSE;
+}
+
+/*
+ * Convert the string argument to keyval and state for GdkEventKey.
+ * If str is valid return TRUE, otherwise FALSE.
+ *
+ * See 'imactivatekey' for documentation of the format.
+ */
+    static int
+im_string_to_keyval(const char *str, unsigned int *keyval, unsigned int *state)
+{
+    const char	    *mods_end;
+    unsigned	    tmp_keyval;
+    unsigned	    tmp_state = 0;
+
+    mods_end = strrchr(str, '-');
+    mods_end = (mods_end != NULL) ? mods_end + 1 : str;
+
+    /* Parse modifier keys */
+    while (str < mods_end)
+	switch (*str++)
+	{
+	    case '-':							break;
+	    case 'S': case 's': tmp_state |= (unsigned)GDK_SHIFT_MASK;	break;
+	    case 'L': case 'l': tmp_state |= (unsigned)GDK_LOCK_MASK;	break;
+	    case 'C': case 'c': tmp_state |= (unsigned)GDK_CONTROL_MASK;break;
+	    case '1':		tmp_state |= (unsigned)GDK_MOD1_MASK;	break;
+	    case '2':		tmp_state |= (unsigned)GDK_MOD2_MASK;	break;
+	    case '3':		tmp_state |= (unsigned)GDK_MOD3_MASK;	break;
+	    case '4':		tmp_state |= (unsigned)GDK_MOD4_MASK;	break;
+	    case '5':		tmp_state |= (unsigned)GDK_MOD5_MASK;	break;
+	    default:
+		return FALSE;
+	}
+
+    tmp_keyval = gdk_keyval_from_name(str);
+
+    if (tmp_keyval == 0 || tmp_keyval == GDK_VoidSymbol)
+	return FALSE;
+
+    if (keyval != NULL)
+	*keyval = tmp_keyval;
+    if (state != NULL)
+	*state = tmp_state;
+
+    return TRUE;
+}
+
+/*
+ * Return TRUE if p_imak is valid, otherwise FALSE.  As a special case, an
+ * empty string is also regarded as valid.
+ *
+ * Note: The numerical key value of p_imak is cached if it was valid; thus
+ * boldly assuming im_xim_isvalid_imactivate() will always be called whenever
+ * 'imak' changes.  This is currently the case but not obvious -- should
+ * probably rename the function for clarity.
+ */
+    int
+im_xim_isvalid_imactivate(void)
+{
+    if (p_imak[0] == NUL)
+    {
+	im_activatekey_keyval = GDK_VoidSymbol;
+	im_activatekey_state  = 0;
+	return TRUE;
+    }
+
+    return im_string_to_keyval((const char *)p_imak,
+			       &im_activatekey_keyval,
+			       &im_activatekey_state);
+}
+
+    static void
+im_synthesize_keypress(unsigned int keyval, unsigned int state)
+{
+    GdkEventKey *event;
+
+    event = (GdkEventKey *)gdk_event_new(GDK_KEY_PRESS);
+    g_object_ref(gtk_widget_get_window(gui.drawarea));
+					/* unreffed by gdk_event_free() */
+    event->window = gtk_widget_get_window(gui.drawarea);
+    event->send_event = TRUE;
+    event->time = GDK_CURRENT_TIME;
+    event->state  = state;
+    event->keyval = keyval;
+    event->hardware_keycode = /* needed for XIM */
+	XKeysymToKeycode(GDK_WINDOW_XDISPLAY(event->window), (KeySym)keyval);
+    event->length = 0;
+    event->string = NULL;
+
+    gtk_im_context_filter_keypress(xic, event);
+
+    /* For consistency, also send the corresponding release event. */
+    event->type = GDK_KEY_RELEASE;
+    event->send_event = FALSE;
+    gtk_im_context_filter_keypress(xic, event);
+
+    gdk_event_free((GdkEvent *)event);
+}
+
+    void
+xim_reset(void)
+{
+# ifdef FEAT_EVAL
+    if (USE_IMACTIVATEFUNC)
+	call_imactivatefunc(im_is_active);
+    else
+# endif
+    if (xic != NULL)
+    {
+	gtk_im_context_reset(xic);
+
+	if (p_imdisable)
+	    im_shutdown();
+	else
+	{
+	    xim_set_focus(gui.in_focus);
+
+	    if (im_activatekey_keyval != GDK_VoidSymbol)
+	    {
+		if (im_is_active)
+		{
+		    g_signal_handler_block(xic, im_commit_handler_id);
+		    im_synthesize_keypress(im_activatekey_keyval,
+						    im_activatekey_state);
+		    g_signal_handler_unblock(xic, im_commit_handler_id);
+		}
+	    }
+	    else
+	    {
+		im_shutdown();
+		xim_init();
+		xim_set_focus(gui.in_focus);
+	    }
+	}
+    }
+
+    if (p_imst == IM_ON_THE_SPOT)
+	preedit_start_col = MAXCOL;
+    xim_has_preediting = FALSE;
+}
+
+    int
+xim_queue_key_press_event(GdkEventKey *event, int down)
+{
+    if (down)
+    {
+	/*
+	 * Workaround GTK2 XIM 'feature' that always converts keypad keys to
+	 * chars., even when not part of an IM sequence (ref. feature of
+	 * gdk/gdkkeyuni.c).
+	 * Flag any keypad keys that might represent a single char.
+	 * If this (on its own - i.e., not part of an IM sequence) is
+	 * committed while we're processing one of these keys, we can ignore
+	 * that commit and go ahead & process it ourselves.  That way we can
+	 * still distinguish keypad keys for use in mappings.
+	 * Also add GDK_space to make <S-Space> work.
+	 */
+	switch (event->keyval)
+	{
+	    case GDK_KP_Add:      xim_expected_char = '+';  break;
+	    case GDK_KP_Subtract: xim_expected_char = '-';  break;
+	    case GDK_KP_Divide:   xim_expected_char = '/';  break;
+	    case GDK_KP_Multiply: xim_expected_char = '*';  break;
+	    case GDK_KP_Decimal:  xim_expected_char = '.';  break;
+	    case GDK_KP_Equal:    xim_expected_char = '=';  break;
+	    case GDK_KP_0:	  xim_expected_char = '0';  break;
+	    case GDK_KP_1:	  xim_expected_char = '1';  break;
+	    case GDK_KP_2:	  xim_expected_char = '2';  break;
+	    case GDK_KP_3:	  xim_expected_char = '3';  break;
+	    case GDK_KP_4:	  xim_expected_char = '4';  break;
+	    case GDK_KP_5:	  xim_expected_char = '5';  break;
+	    case GDK_KP_6:	  xim_expected_char = '6';  break;
+	    case GDK_KP_7:	  xim_expected_char = '7';  break;
+	    case GDK_KP_8:	  xim_expected_char = '8';  break;
+	    case GDK_KP_9:	  xim_expected_char = '9';  break;
+	    case GDK_space:	  xim_expected_char = ' ';  break;
+	    default:		  xim_expected_char = NUL;
+	}
+	xim_ignored_char = FALSE;
+    }
+
+    /*
+     * When typing fFtT, XIM may be activated. Thus it must pass
+     * gtk_im_context_filter_keypress() in Normal mode.
+     * And while doing :sh too.
+     */
+    if (xic != NULL && !p_imdisable
+		    && (State & (INSERT | CMDLINE | NORMAL | EXTERNCMD)) != 0)
+    {
+	/*
+	 * Filter 'imactivatekey' and map it to CTRL-^.  This way, Vim is
+	 * always aware of the current status of IM, and can even emulate
+	 * the activation key for modules that don't support one.
+	 */
+	if (event->keyval == im_activatekey_keyval
+	     && (event->state & im_activatekey_state) == im_activatekey_state)
+	{
+	    unsigned int state_mask;
+
+	    /* Require the state of the 3 most used modifiers to match exactly.
+	     * Otherwise e.g. <S-C-space> would be unusable for other purposes
+	     * if the IM activate key is <S-space>. */
+	    state_mask  = im_activatekey_state;
+	    state_mask |= ((int)GDK_SHIFT_MASK | (int)GDK_CONTROL_MASK
+							| (int)GDK_MOD1_MASK);
+
+	    if ((event->state & state_mask) != im_activatekey_state)
+		return FALSE;
+
+	    /* Don't send it a second time on GDK_KEY_RELEASE. */
+	    if (event->type != GDK_KEY_PRESS)
+		return TRUE;
+
+	    if (map_to_exists_mode((char_u *)"", LANGMAP, FALSE))
+	    {
+		im_set_active(FALSE);
+
+		/* ":lmap" mappings exists, toggle use of mappings. */
+		State ^= LANGMAP;
+		if (State & LANGMAP)
+		{
+		    curbuf->b_p_iminsert = B_IMODE_NONE;
+		    State &= ~LANGMAP;
+		}
+		else
+		{
+		    curbuf->b_p_iminsert = B_IMODE_LMAP;
+		    State |= LANGMAP;
+		}
+		return TRUE;
+	    }
+
+	    return gtk_im_context_filter_keypress(xic, event);
+	}
+
+	/* Don't filter events through the IM context if IM isn't active
+	 * right now.  Unlike with GTK+ 1.2 we cannot rely on the IM module
+	 * not doing anything before the activation key was sent. */
+	if (im_activatekey_keyval == GDK_VoidSymbol || im_is_active)
+	{
+	    int imresult = gtk_im_context_filter_keypress(xic, event);
+
+	    if (p_imst == IM_ON_THE_SPOT)
+	    {
+		/* Some XIM send following sequence:
+		 * 1. preedited string.
+		 * 2. committed string.
+		 * 3. line changed key.
+		 * 4. preedited string.
+		 * 5. remove preedited string.
+		 * if 3, Vim can't move back the above line for 5.
+		 * thus, this part should not parse the key. */
+		if (!imresult && preedit_start_col != MAXCOL
+					    && event->keyval == GDK_Return)
+		{
+		    im_synthesize_keypress(GDK_Return, 0U);
+		    return FALSE;
+		}
+	    }
+
+	    /* If XIM tried to commit a keypad key as a single char.,
+	     * ignore it so we can use the keypad key 'raw', for mappings. */
+	    if (xim_expected_char != NUL && xim_ignored_char)
+		/* We had a keypad key, and XIM tried to thieve it */
+		return FALSE;
+
+	    /* This is supposed to fix a problem with iBus, that space
+	     * characters don't work in input mode. */
+	    xim_expected_char = NUL;
+
+	    /* Normal processing */
+	    return imresult;
+	}
+    }
+
+    return FALSE;
+}
+
+    int
+im_get_status(void)
+{
+#  ifdef FEAT_EVAL
+    if (USE_IMSTATUSFUNC)
+	return call_imstatusfunc();
+#  endif
+    return im_is_active;
+}
+
+    int
+preedit_get_status(void)
+{
+    return preedit_is_active;
+}
+
+    int
+im_is_preediting(void)
+{
+    return xim_has_preediting;
+}
+
+# else /* !FEAT_GUI_GTK */
+
+static int	xim_is_active = FALSE;  /* XIM should be active in the current
+					   mode */
+static int	xim_has_focus = FALSE;	/* XIM is really being used for Vim */
+#  ifdef FEAT_GUI_X11
+static XIMStyle	input_style;
+static int	status_area_enabled = TRUE;
+#  endif
+
+/*
+ * Switch using XIM on/off.  This is used by the code that changes "State".
+ * When 'imactivatefunc' is defined use that function instead.
+ */
+    void
+im_set_active(int active_arg)
+{
+    int active = active_arg;
+
+    /* If 'imdisable' is set, XIM is never active. */
+    if (p_imdisable)
+	active = FALSE;
+    else if (input_style & XIMPreeditPosition)
+	/* There is a problem in switching XIM off when preediting is used,
+	 * and it is not clear how this can be solved.  For now, keep XIM on
+	 * all the time, like it was done in Vim 5.8. */
+	active = TRUE;
+
+#  if defined(FEAT_EVAL)
+    if (USE_IMACTIVATEFUNC)
+    {
+	if (active != im_get_status())
+	{
+	    call_imactivatefunc(active);
+	    xim_has_focus = active;
+	}
+	return;
+    }
+#  endif
+
+    if (xic == NULL)
+	return;
+
+    /* Remember the active state, it is needed when Vim gets keyboard focus. */
+    xim_is_active = active;
+    xim_set_preedit();
+}
+
+/*
+ * Adjust using XIM for gaining or losing keyboard focus.  Also called when
+ * "xim_is_active" changes.
+ */
+    void
+xim_set_focus(int focus)
+{
+    if (xic == NULL)
+	return;
+
+    /*
+     * XIM only gets focus when the Vim window has keyboard focus and XIM has
+     * been set active for the current mode.
+     */
+    if (focus && xim_is_active)
+    {
+	if (!xim_has_focus)
+	{
+	    xim_has_focus = TRUE;
+	    XSetICFocus(xic);
+	}
+    }
+    else
+    {
+	if (xim_has_focus)
+	{
+	    xim_has_focus = FALSE;
+	    XUnsetICFocus(xic);
+	}
+    }
+}
+
+    void
+im_set_position(int row UNUSED, int col UNUSED)
+{
+    xim_set_preedit();
+}
+
+/*
+ * Set the XIM to the current cursor position.
+ */
+    void
+xim_set_preedit(void)
+{
+    XVaNestedList attr_list;
+    XRectangle spot_area;
+    XPoint over_spot;
+    int line_space;
+
+    if (xic == NULL)
+	return;
+
+    xim_set_focus(TRUE);
+
+    if (!xim_has_focus)
+    {
+	/* hide XIM cursor */
+	over_spot.x = 0;
+	over_spot.y = -100; /* arbitrary invisible position */
+	attr_list = (XVaNestedList) XVaCreateNestedList(0,
+							XNSpotLocation,
+							&over_spot,
+							NULL);
+	XSetICValues(xic, XNPreeditAttributes, attr_list, NULL);
+	XFree(attr_list);
+	return;
+    }
+
+    if (input_style & XIMPreeditPosition)
+    {
+	if (xim_fg_color == INVALCOLOR)
+	{
+	    xim_fg_color = gui.def_norm_pixel;
+	    xim_bg_color = gui.def_back_pixel;
+	}
+	over_spot.x = TEXT_X(gui.col);
+	over_spot.y = TEXT_Y(gui.row);
+	spot_area.x = 0;
+	spot_area.y = 0;
+	spot_area.height = gui.char_height * Rows;
+	spot_area.width  = gui.char_width * Columns;
+	line_space = gui.char_height;
+	attr_list = (XVaNestedList) XVaCreateNestedList(0,
+					XNSpotLocation, &over_spot,
+					XNForeground, (Pixel) xim_fg_color,
+					XNBackground, (Pixel) xim_bg_color,
+					XNArea, &spot_area,
+					XNLineSpace, line_space,
+					NULL);
+	if (XSetICValues(xic, XNPreeditAttributes, attr_list, NULL))
+	    emsg(_("E284: Cannot set IC values"));
+	XFree(attr_list);
+    }
+}
+
+#  if defined(FEAT_GUI_X11)
+static char e_xim[] = N_("E285: Failed to create input context");
+#  endif
+
+#  if defined(FEAT_GUI_X11) || defined(PROTO)
+#   if defined(XtSpecificationRelease) && XtSpecificationRelease >= 6 && !defined(SUN_SYSTEM)
+#    define USE_X11R6_XIM
+#   endif
+
+static int xim_real_init(Window x11_window, Display *x11_display);
+
+
+#  ifdef USE_X11R6_XIM
+    static void
+xim_instantiate_cb(
+    Display	*display,
+    XPointer	client_data UNUSED,
+    XPointer	call_data UNUSED)
+{
+    Window	x11_window;
+    Display	*x11_display;
+
+#   ifdef XIM_DEBUG
+    xim_log("xim_instantiate_cb()\n");
+#   endif
+
+    gui_get_x11_windis(&x11_window, &x11_display);
+    if (display != x11_display)
+	return;
+
+    xim_real_init(x11_window, x11_display);
+    gui_set_shellsize(FALSE, FALSE, RESIZE_BOTH);
+    if (xic != NULL)
+	XUnregisterIMInstantiateCallback(x11_display, NULL, NULL, NULL,
+					 xim_instantiate_cb, NULL);
+}
+
+    static void
+xim_destroy_cb(
+    XIM		im UNUSED,
+    XPointer	client_data UNUSED,
+    XPointer	call_data UNUSED)
+{
+    Window	x11_window;
+    Display	*x11_display;
+
+#   ifdef XIM_DEBUG
+    xim_log("xim_destroy_cb()\n");
+   #endif
+    gui_get_x11_windis(&x11_window, &x11_display);
+
+    xic = NULL;
+    status_area_enabled = FALSE;
+
+    gui_set_shellsize(FALSE, FALSE, RESIZE_BOTH);
+
+    XRegisterIMInstantiateCallback(x11_display, NULL, NULL, NULL,
+				   xim_instantiate_cb, NULL);
+}
+#  endif
+
+    void
+xim_init(void)
+{
+    Window	x11_window;
+    Display	*x11_display;
+
+#  ifdef XIM_DEBUG
+    xim_log("xim_init()\n");
+#  endif
+
+    gui_get_x11_windis(&x11_window, &x11_display);
+
+    xic = NULL;
+
+    if (xim_real_init(x11_window, x11_display))
+	return;
+
+    gui_set_shellsize(FALSE, FALSE, RESIZE_BOTH);
+
+#  ifdef USE_X11R6_XIM
+    XRegisterIMInstantiateCallback(x11_display, NULL, NULL, NULL,
+				   xim_instantiate_cb, NULL);
+#  endif
+}
+
+    static int
+xim_real_init(Window x11_window, Display *x11_display)
+{
+    int		i;
+    char	*p,
+		*s,
+		*ns,
+		*end,
+		tmp[1024];
+#  define IMLEN_MAX 40
+    char	buf[IMLEN_MAX + 7];
+    XIM		xim = NULL;
+    XIMStyles	*xim_styles;
+    XIMStyle	this_input_style = 0;
+    Boolean	found;
+    XPoint	over_spot;
+    XVaNestedList preedit_list, status_list;
+
+    input_style = 0;
+    status_area_enabled = FALSE;
+
+    if (xic != NULL)
+	return FALSE;
+
+    if (gui.rsrc_input_method != NULL && *gui.rsrc_input_method != NUL)
+    {
+	strcpy(tmp, gui.rsrc_input_method);
+	for (ns = s = tmp; ns != NULL && *s != NUL;)
+	{
+	    s = (char *)skipwhite((char_u *)s);
+	    if (*s == NUL)
+		break;
+	    if ((ns = end = strchr(s, ',')) == NULL)
+		end = s + strlen(s);
+	    while (isspace(((char_u *)end)[-1]))
+		end--;
+	    *end = NUL;
+
+	    if (strlen(s) <= IMLEN_MAX)
+	    {
+		strcpy(buf, "@im=");
+		strcat(buf, s);
+		if ((p = XSetLocaleModifiers(buf)) != NULL && *p != NUL
+			&& (xim = XOpenIM(x11_display, NULL, NULL, NULL))
+								      != NULL)
+		    break;
+	    }
+
+	    s = ns + 1;
+	}
+    }
+
+    if (xim == NULL && (p = XSetLocaleModifiers("")) != NULL && *p != NUL)
+	xim = XOpenIM(x11_display, NULL, NULL, NULL);
+
+    /* This is supposed to be useful to obtain characters through
+     * XmbLookupString() without really using a XIM. */
+    if (xim == NULL && (p = XSetLocaleModifiers("@im=none")) != NULL
+								 && *p != NUL)
+	xim = XOpenIM(x11_display, NULL, NULL, NULL);
+
+    if (xim == NULL)
+    {
+	/* Only give this message when verbose is set, because too many people
+	 * got this message when they didn't want to use a XIM. */
+	if (p_verbose > 0)
+	{
+	    verbose_enter();
+	    emsg(_("E286: Failed to open input method"));
+	    verbose_leave();
+	}
+	return FALSE;
+    }
+
+#  ifdef USE_X11R6_XIM
+    {
+	XIMCallback destroy_cb;
+
+	destroy_cb.callback = xim_destroy_cb;
+	destroy_cb.client_data = NULL;
+	if (XSetIMValues(xim, XNDestroyCallback, &destroy_cb, NULL))
+	    emsg(_("E287: Warning: Could not set destroy callback to IM"));
+    }
+#  endif
+
+    if (XGetIMValues(xim, XNQueryInputStyle, &xim_styles, NULL) || !xim_styles)
+    {
+	emsg(_("E288: input method doesn't support any style"));
+	XCloseIM(xim);
+	return FALSE;
+    }
+
+    found = False;
+    strcpy(tmp, gui.rsrc_preedit_type_name);
+    for (s = tmp; s && !found; )
+    {
+	while (*s && isspace((unsigned char)*s))
+	    s++;
+	if (!*s)
+	    break;
+	if ((ns = end = strchr(s, ',')) != 0)
+	    ns++;
+	else
+	    end = s + strlen(s);
+	while (isspace((unsigned char)*end))
+	    end--;
+	*end = '\0';
+
+	if (!strcmp(s, "OverTheSpot"))
+	    this_input_style = (XIMPreeditPosition | XIMStatusArea);
+	else if (!strcmp(s, "OffTheSpot"))
+	    this_input_style = (XIMPreeditArea | XIMStatusArea);
+	else if (!strcmp(s, "Root"))
+	    this_input_style = (XIMPreeditNothing | XIMStatusNothing);
+
+	for (i = 0; (unsigned short)i < xim_styles->count_styles; i++)
+	{
+	    if (this_input_style == xim_styles->supported_styles[i])
+	    {
+		found = True;
+		break;
+	    }
+	}
+	if (!found)
+	    for (i = 0; (unsigned short)i < xim_styles->count_styles; i++)
+	    {
+		if ((xim_styles->supported_styles[i] & this_input_style)
+			== (this_input_style & ~XIMStatusArea))
+		{
+		    this_input_style &= ~XIMStatusArea;
+		    found = True;
+		    break;
+		}
+	    }
+
+	s = ns;
+    }
+    XFree(xim_styles);
+
+    if (!found)
+    {
+	/* Only give this message when verbose is set, because too many people
+	 * got this message when they didn't want to use a XIM. */
+	if (p_verbose > 0)
+	{
+	    verbose_enter();
+	    emsg(_("E289: input method doesn't support my preedit type"));
+	    verbose_leave();
+	}
+	XCloseIM(xim);
+	return FALSE;
+    }
+
+    over_spot.x = TEXT_X(gui.col);
+    over_spot.y = TEXT_Y(gui.row);
+    input_style = this_input_style;
+
+    /* A crash was reported when trying to pass gui.norm_font as XNFontSet,
+     * thus that has been removed.  Hopefully the default works... */
+#  ifdef FEAT_XFONTSET
+    if (gui.fontset != NOFONTSET)
+    {
+	preedit_list = XVaCreateNestedList(0,
+				XNSpotLocation, &over_spot,
+				XNForeground, (Pixel)gui.def_norm_pixel,
+				XNBackground, (Pixel)gui.def_back_pixel,
+				XNFontSet, (XFontSet)gui.fontset,
+				NULL);
+	status_list = XVaCreateNestedList(0,
+				XNForeground, (Pixel)gui.def_norm_pixel,
+				XNBackground, (Pixel)gui.def_back_pixel,
+				XNFontSet, (XFontSet)gui.fontset,
+				NULL);
+    }
+    else
+#  endif
+    {
+	preedit_list = XVaCreateNestedList(0,
+				XNSpotLocation, &over_spot,
+				XNForeground, (Pixel)gui.def_norm_pixel,
+				XNBackground, (Pixel)gui.def_back_pixel,
+				NULL);
+	status_list = XVaCreateNestedList(0,
+				XNForeground, (Pixel)gui.def_norm_pixel,
+				XNBackground, (Pixel)gui.def_back_pixel,
+				NULL);
+    }
+
+    xic = XCreateIC(xim,
+		    XNInputStyle, input_style,
+		    XNClientWindow, x11_window,
+		    XNFocusWindow, gui.wid,
+		    XNPreeditAttributes, preedit_list,
+		    XNStatusAttributes, status_list,
+		    NULL);
+    XFree(status_list);
+    XFree(preedit_list);
+    if (xic != NULL)
+    {
+	if (input_style & XIMStatusArea)
+	{
+	    xim_set_status_area();
+	    status_area_enabled = TRUE;
+	}
+	else
+	    gui_set_shellsize(FALSE, FALSE, RESIZE_BOTH);
+    }
+    else
+    {
+	if (!is_not_a_term())
+	    emsg(_(e_xim));
+	XCloseIM(xim);
+	return FALSE;
+    }
+
+    return TRUE;
+}
+
+#  endif /* FEAT_GUI_X11 */
+
+/*
+ * Get IM status.  When IM is on, return TRUE.  Else return FALSE.
+ * FIXME: This doesn't work correctly: Having focus doesn't always mean XIM is
+ * active, when not having focus XIM may still be active (e.g., when using a
+ * tear-off menu item).
+ */
+    int
+im_get_status(void)
+{
+#  ifdef FEAT_EVAL
+    if (USE_IMSTATUSFUNC)
+	return call_imstatusfunc();
+#  endif
+    return xim_has_focus;
+}
+
+# endif /* !FEAT_GUI_GTK */
+
+# if !defined(FEAT_GUI_GTK) || defined(PROTO)
+/*
+ * Set up the status area.
+ *
+ * This should use a separate Widget, but that seems not possible, because
+ * preedit_area and status_area should be set to the same window as for the
+ * text input.  Unfortunately this means the status area pollutes the text
+ * window...
+ */
+    void
+xim_set_status_area(void)
+{
+    XVaNestedList preedit_list = 0, status_list = 0, list = 0;
+    XRectangle pre_area, status_area;
+
+    if (xic == NULL)
+	return;
+
+    if (input_style & XIMStatusArea)
+    {
+	if (input_style & XIMPreeditArea)
+	{
+	    XRectangle *needed_rect;
+
+	    /* to get status_area width */
+	    status_list = XVaCreateNestedList(0, XNAreaNeeded,
+					      &needed_rect, NULL);
+	    XGetICValues(xic, XNStatusAttributes, status_list, NULL);
+	    XFree(status_list);
+
+	    status_area.width = needed_rect->width;
+	}
+	else
+	    status_area.width = gui.char_width * Columns;
+
+	status_area.x = 0;
+	status_area.y = gui.char_height * Rows + gui.border_offset;
+	if (gui.which_scrollbars[SBAR_BOTTOM])
+	    status_area.y += gui.scrollbar_height;
+#ifdef FEAT_MENU
+	if (gui.menu_is_active)
+	    status_area.y += gui.menu_height;
+#endif
+	status_area.height = gui.char_height;
+	status_list = XVaCreateNestedList(0, XNArea, &status_area, NULL);
+    }
+    else
+    {
+	status_area.x = 0;
+	status_area.y = gui.char_height * Rows + gui.border_offset;
+	if (gui.which_scrollbars[SBAR_BOTTOM])
+	    status_area.y += gui.scrollbar_height;
+#ifdef FEAT_MENU
+	if (gui.menu_is_active)
+	    status_area.y += gui.menu_height;
+#endif
+	status_area.width = 0;
+	status_area.height = gui.char_height;
+    }
+
+    if (input_style & XIMPreeditArea)   /* off-the-spot */
+    {
+	pre_area.x = status_area.x + status_area.width;
+	pre_area.y = gui.char_height * Rows + gui.border_offset;
+	pre_area.width = gui.char_width * Columns - pre_area.x;
+	if (gui.which_scrollbars[SBAR_BOTTOM])
+	    pre_area.y += gui.scrollbar_height;
+#ifdef FEAT_MENU
+	if (gui.menu_is_active)
+	    pre_area.y += gui.menu_height;
+#endif
+	pre_area.height = gui.char_height;
+	preedit_list = XVaCreateNestedList(0, XNArea, &pre_area, NULL);
+    }
+    else if (input_style & XIMPreeditPosition)   /* over-the-spot */
+    {
+	pre_area.x = 0;
+	pre_area.y = 0;
+	pre_area.height = gui.char_height * Rows;
+	pre_area.width = gui.char_width * Columns;
+	preedit_list = XVaCreateNestedList(0, XNArea, &pre_area, NULL);
+    }
+
+    if (preedit_list && status_list)
+	list = XVaCreateNestedList(0, XNPreeditAttributes, preedit_list,
+				   XNStatusAttributes, status_list, NULL);
+    else if (preedit_list)
+	list = XVaCreateNestedList(0, XNPreeditAttributes, preedit_list,
+				   NULL);
+    else if (status_list)
+	list = XVaCreateNestedList(0, XNStatusAttributes, status_list,
+				   NULL);
+    else
+	list = NULL;
+
+    if (list)
+    {
+	XSetICValues(xic, XNVaNestedList, list, NULL);
+	XFree(list);
+    }
+    if (status_list)
+	XFree(status_list);
+    if (preedit_list)
+	XFree(preedit_list);
+}
+
+    int
+xim_get_status_area_height(void)
+{
+    if (status_area_enabled)
+	return gui.char_height;
+    return 0;
+}
+# endif
+
+#else /* !defined(FEAT_XIM) */
+
+# ifdef IME_WITHOUT_XIM
+static int im_was_set_active = FALSE;
+
+    int
+im_get_status(void)
+{
+#  if defined(FEAT_EVAL)
+    if (USE_IMSTATUSFUNC)
+	return call_imstatusfunc();
+#  endif
+    return im_was_set_active;
+}
+
+    void
+im_set_active(int active_arg)
+{
+#  if defined(FEAT_EVAL)
+    int	    active = !p_imdisable && active_arg;
+
+    if (USE_IMACTIVATEFUNC && active != im_get_status())
+    {
+	call_imactivatefunc(active);
+	im_was_set_active = active;
+    }
+#  endif
+}
+
+#  ifdef FEAT_GUI
+    void
+im_set_position(int row UNUSED, int col UNUSED)
+{
+}
+#  endif
+# endif
+
+#endif /* FEAT_XIM */
+
+
+/*
+ * Setup "vcp" for conversion from "from" to "to".
+ * The names must have been made canonical with enc_canonize().
+ * vcp->vc_type must have been initialized to CONV_NONE.
+ * Note: cannot be used for conversion from/to ucs-2 and ucs-4 (will use utf-8
+ * instead).
+ * Afterwards invoke with "from" and "to" equal to NULL to cleanup.
+ * Return FAIL when conversion is not supported, OK otherwise.
+ */
+    int
+convert_setup(vimconv_T *vcp, char_u *from, char_u *to)
+{
+    return convert_setup_ext(vcp, from, TRUE, to, TRUE);
+}
+
+/*
+ * As convert_setup(), but only when from_unicode_is_utf8 is TRUE will all
+ * "from" unicode charsets be considered utf-8.  Same for "to".
+ */
+    int
+convert_setup_ext(
+    vimconv_T	*vcp,
+    char_u	*from,
+    int		from_unicode_is_utf8,
+    char_u	*to,
+    int		to_unicode_is_utf8)
+{
+    int		from_prop;
+    int		to_prop;
+    int		from_is_utf8;
+    int		to_is_utf8;
+
+    /* Reset to no conversion. */
+#ifdef USE_ICONV
+    if (vcp->vc_type == CONV_ICONV && vcp->vc_fd != (iconv_t)-1)
+	iconv_close(vcp->vc_fd);
+#endif
+    vcp->vc_type = CONV_NONE;
+    vcp->vc_factor = 1;
+    vcp->vc_fail = FALSE;
+
+    /* No conversion when one of the names is empty or they are equal. */
+    if (from == NULL || *from == NUL || to == NULL || *to == NUL
+						     || STRCMP(from, to) == 0)
+	return OK;
+
+    from_prop = enc_canon_props(from);
+    to_prop = enc_canon_props(to);
+    if (from_unicode_is_utf8)
+	from_is_utf8 = from_prop & ENC_UNICODE;
+    else
+	from_is_utf8 = from_prop == ENC_UNICODE;
+    if (to_unicode_is_utf8)
+	to_is_utf8 = to_prop & ENC_UNICODE;
+    else
+	to_is_utf8 = to_prop == ENC_UNICODE;
+
+    if ((from_prop & ENC_LATIN1) && to_is_utf8)
+    {
+	/* Internal latin1 -> utf-8 conversion. */
+	vcp->vc_type = CONV_TO_UTF8;
+	vcp->vc_factor = 2;	/* up to twice as long */
+    }
+    else if ((from_prop & ENC_LATIN9) && to_is_utf8)
+    {
+	/* Internal latin9 -> utf-8 conversion. */
+	vcp->vc_type = CONV_9_TO_UTF8;
+	vcp->vc_factor = 3;	/* up to three as long (euro sign) */
+    }
+    else if (from_is_utf8 && (to_prop & ENC_LATIN1))
+    {
+	/* Internal utf-8 -> latin1 conversion. */
+	vcp->vc_type = CONV_TO_LATIN1;
+    }
+    else if (from_is_utf8 && (to_prop & ENC_LATIN9))
+    {
+	/* Internal utf-8 -> latin9 conversion. */
+	vcp->vc_type = CONV_TO_LATIN9;
+    }
+#ifdef WIN3264
+    /* Win32-specific codepage <-> codepage conversion without iconv. */
+    else if ((from_is_utf8 || encname2codepage(from) > 0)
+	    && (to_is_utf8 || encname2codepage(to) > 0))
+    {
+	vcp->vc_type = CONV_CODEPAGE;
+	vcp->vc_factor = 2;	/* up to twice as long */
+	vcp->vc_cpfrom = from_is_utf8 ? 0 : encname2codepage(from);
+	vcp->vc_cpto = to_is_utf8 ? 0 : encname2codepage(to);
+    }
+#endif
+#ifdef MACOS_CONVERT
+    else if ((from_prop & ENC_MACROMAN) && (to_prop & ENC_LATIN1))
+    {
+	vcp->vc_type = CONV_MAC_LATIN1;
+    }
+    else if ((from_prop & ENC_MACROMAN) && to_is_utf8)
+    {
+	vcp->vc_type = CONV_MAC_UTF8;
+	vcp->vc_factor = 2;	/* up to twice as long */
+    }
+    else if ((from_prop & ENC_LATIN1) && (to_prop & ENC_MACROMAN))
+    {
+	vcp->vc_type = CONV_LATIN1_MAC;
+    }
+    else if (from_is_utf8 && (to_prop & ENC_MACROMAN))
+    {
+	vcp->vc_type = CONV_UTF8_MAC;
+    }
+#endif
+#ifdef USE_ICONV
+    else
+    {
+	/* Use iconv() for conversion. */
+	vcp->vc_fd = (iconv_t)my_iconv_open(
+		to_is_utf8 ? (char_u *)"utf-8" : to,
+		from_is_utf8 ? (char_u *)"utf-8" : from);
+	if (vcp->vc_fd != (iconv_t)-1)
+	{
+	    vcp->vc_type = CONV_ICONV;
+	    vcp->vc_factor = 4;	/* could be longer too... */
+	}
+    }
+#endif
+    if (vcp->vc_type == CONV_NONE)
+	return FAIL;
+
+    return OK;
+}
+
+#if defined(FEAT_GUI) || defined(AMIGA) || defined(WIN3264) \
+	|| defined(PROTO)
+/*
+ * Do conversion on typed input characters in-place.
+ * The input and output are not NUL terminated!
+ * Returns the length after conversion.
+ */
+    int
+convert_input(char_u *ptr, int len, int maxlen)
+{
+    return convert_input_safe(ptr, len, maxlen, NULL, NULL);
+}
+#endif
+
+/*
+ * Like convert_input(), but when there is an incomplete byte sequence at the
+ * end return that as an allocated string in "restp" and set "*restlenp" to
+ * the length.  If "restp" is NULL it is not used.
+ */
+    int
+convert_input_safe(
+    char_u	*ptr,
+    int		len,
+    int		maxlen,
+    char_u	**restp,
+    int		*restlenp)
+{
+    char_u	*d;
+    int		dlen = len;
+    int		unconvertlen = 0;
+
+    d = string_convert_ext(&input_conv, ptr, &dlen,
+					restp == NULL ? NULL : &unconvertlen);
+    if (d != NULL)
+    {
+	if (dlen <= maxlen)
+	{
+	    if (unconvertlen > 0)
+	    {
+		/* Move the unconverted characters to allocated memory. */
+		*restp = alloc(unconvertlen);
+		if (*restp != NULL)
+		    mch_memmove(*restp, ptr + len - unconvertlen, unconvertlen);
+		*restlenp = unconvertlen;
+	    }
+	    mch_memmove(ptr, d, dlen);
+	}
+	else
+	    /* result is too long, keep the unconverted text (the caller must
+	     * have done something wrong!) */
+	    dlen = len;
+	vim_free(d);
+    }
+    return dlen;
+}
+
+/*
+ * Convert text "ptr[*lenp]" according to "vcp".
+ * Returns the result in allocated memory and sets "*lenp".
+ * When "lenp" is NULL, use NUL terminated strings.
+ * Illegal chars are often changed to "?", unless vcp->vc_fail is set.
+ * When something goes wrong, NULL is returned and "*lenp" is unchanged.
+ */
+    char_u *
+string_convert(
+    vimconv_T	*vcp,
+    char_u	*ptr,
+    int		*lenp)
+{
+    return string_convert_ext(vcp, ptr, lenp, NULL);
+}
+
+/*
+ * Like string_convert(), but when "unconvlenp" is not NULL and there are is
+ * an incomplete sequence at the end it is not converted and "*unconvlenp" is
+ * set to the number of remaining bytes.
+ */
+    char_u *
+string_convert_ext(
+    vimconv_T	*vcp,
+    char_u	*ptr,
+    int		*lenp,
+    int		*unconvlenp)
+{
+    char_u	*retval = NULL;
+    char_u	*d;
+    int		len;
+    int		i;
+    int		l;
+    int		c;
+
+    if (lenp == NULL)
+	len = (int)STRLEN(ptr);
+    else
+	len = *lenp;
+    if (len == 0)
+	return vim_strsave((char_u *)"");
+
+    switch (vcp->vc_type)
+    {
+	case CONV_TO_UTF8:	/* latin1 to utf-8 conversion */
+	    retval = alloc(len * 2 + 1);
+	    if (retval == NULL)
+		break;
+	    d = retval;
+	    for (i = 0; i < len; ++i)
+	    {
+		c = ptr[i];
+		if (c < 0x80)
+		    *d++ = c;
+		else
+		{
+		    *d++ = 0xc0 + ((unsigned)c >> 6);
+		    *d++ = 0x80 + (c & 0x3f);
+		}
+	    }
+	    *d = NUL;
+	    if (lenp != NULL)
+		*lenp = (int)(d - retval);
+	    break;
+
+	case CONV_9_TO_UTF8:	/* latin9 to utf-8 conversion */
+	    retval = alloc(len * 3 + 1);
+	    if (retval == NULL)
+		break;
+	    d = retval;
+	    for (i = 0; i < len; ++i)
+	    {
+		c = ptr[i];
+		switch (c)
+		{
+		    case 0xa4: c = 0x20ac; break;   /* euro */
+		    case 0xa6: c = 0x0160; break;   /* S hat */
+		    case 0xa8: c = 0x0161; break;   /* S -hat */
+		    case 0xb4: c = 0x017d; break;   /* Z hat */
+		    case 0xb8: c = 0x017e; break;   /* Z -hat */
+		    case 0xbc: c = 0x0152; break;   /* OE */
+		    case 0xbd: c = 0x0153; break;   /* oe */
+		    case 0xbe: c = 0x0178; break;   /* Y */
+		}
+		d += utf_char2bytes(c, d);
+	    }
+	    *d = NUL;
+	    if (lenp != NULL)
+		*lenp = (int)(d - retval);
+	    break;
+
+	case CONV_TO_LATIN1:	/* utf-8 to latin1 conversion */
+	case CONV_TO_LATIN9:	/* utf-8 to latin9 conversion */
+	    retval = alloc(len + 1);
+	    if (retval == NULL)
+		break;
+	    d = retval;
+	    for (i = 0; i < len; ++i)
+	    {
+		l = utf_ptr2len_len(ptr + i, len - i);
+		if (l == 0)
+		    *d++ = NUL;
+		else if (l == 1)
+		{
+		    int l_w = utf8len_tab_zero[ptr[i]];
+
+		    if (l_w == 0)
+		    {
+			/* Illegal utf-8 byte cannot be converted */
+			vim_free(retval);
+			return NULL;
+		    }
+		    if (unconvlenp != NULL && l_w > len - i)
+		    {
+			/* Incomplete sequence at the end. */
+			*unconvlenp = len - i;
+			break;
+		    }
+		    *d++ = ptr[i];
+		}
+		else
+		{
+		    c = utf_ptr2char(ptr + i);
+		    if (vcp->vc_type == CONV_TO_LATIN9)
+			switch (c)
+			{
+			    case 0x20ac: c = 0xa4; break;   /* euro */
+			    case 0x0160: c = 0xa6; break;   /* S hat */
+			    case 0x0161: c = 0xa8; break;   /* S -hat */
+			    case 0x017d: c = 0xb4; break;   /* Z hat */
+			    case 0x017e: c = 0xb8; break;   /* Z -hat */
+			    case 0x0152: c = 0xbc; break;   /* OE */
+			    case 0x0153: c = 0xbd; break;   /* oe */
+			    case 0x0178: c = 0xbe; break;   /* Y */
+			    case 0xa4:
+			    case 0xa6:
+			    case 0xa8:
+			    case 0xb4:
+			    case 0xb8:
+			    case 0xbc:
+			    case 0xbd:
+			    case 0xbe: c = 0x100; break; /* not in latin9 */
+			}
+		    if (!utf_iscomposing(c))	/* skip composing chars */
+		    {
+			if (c < 0x100)
+			    *d++ = c;
+			else if (vcp->vc_fail)
+			{
+			    vim_free(retval);
+			    return NULL;
+			}
+			else
+			{
+			    *d++ = 0xbf;
+			    if (utf_char2cells(c) > 1)
+				*d++ = '?';
+			}
+		    }
+		    i += l - 1;
+		}
+	    }
+	    *d = NUL;
+	    if (lenp != NULL)
+		*lenp = (int)(d - retval);
+	    break;
+
+# ifdef MACOS_CONVERT
+	case CONV_MAC_LATIN1:
+	    retval = mac_string_convert(ptr, len, lenp, vcp->vc_fail,
+					'm', 'l', unconvlenp);
+	    break;
+
+	case CONV_LATIN1_MAC:
+	    retval = mac_string_convert(ptr, len, lenp, vcp->vc_fail,
+					'l', 'm', unconvlenp);
+	    break;
+
+	case CONV_MAC_UTF8:
+	    retval = mac_string_convert(ptr, len, lenp, vcp->vc_fail,
+					'm', 'u', unconvlenp);
+	    break;
+
+	case CONV_UTF8_MAC:
+	    retval = mac_string_convert(ptr, len, lenp, vcp->vc_fail,
+					'u', 'm', unconvlenp);
+	    break;
+# endif
+
+# ifdef USE_ICONV
+	case CONV_ICONV:	/* conversion with output_conv.vc_fd */
+	    retval = iconv_string(vcp, ptr, len, unconvlenp, lenp);
+	    break;
+# endif
+# ifdef WIN3264
+	case CONV_CODEPAGE:		/* codepage -> codepage */
+	{
+	    int		retlen;
+	    int		tmp_len;
+	    short_u	*tmp;
+
+	    /* 1. codepage/UTF-8  ->  ucs-2. */
+	    if (vcp->vc_cpfrom == 0)
+		tmp_len = utf8_to_utf16(ptr, len, NULL, NULL);
+	    else
+	    {
+		tmp_len = MultiByteToWideChar(vcp->vc_cpfrom,
+					unconvlenp ? MB_ERR_INVALID_CHARS : 0,
+					(char *)ptr, len, 0, 0);
+		if (tmp_len == 0
+			&& GetLastError() == ERROR_NO_UNICODE_TRANSLATION)
+		{
+		    if (lenp != NULL)
+			*lenp = 0;
+		    if (unconvlenp != NULL)
+			*unconvlenp = len;
+		    retval = alloc(1);
+		    if (retval)
+			retval[0] = NUL;
+		    return retval;
+		}
+	    }
+	    tmp = (short_u *)alloc(sizeof(short_u) * tmp_len);
+	    if (tmp == NULL)
+		break;
+	    if (vcp->vc_cpfrom == 0)
+		utf8_to_utf16(ptr, len, tmp, unconvlenp);
+	    else
+		MultiByteToWideChar(vcp->vc_cpfrom, 0,
+			(char *)ptr, len, tmp, tmp_len);
+
+	    /* 2. ucs-2  ->  codepage/UTF-8. */
+	    if (vcp->vc_cpto == 0)
+		retlen = utf16_to_utf8(tmp, tmp_len, NULL);
+	    else
+		retlen = WideCharToMultiByte(vcp->vc_cpto, 0,
+						    tmp, tmp_len, 0, 0, 0, 0);
+	    retval = alloc(retlen + 1);
+	    if (retval != NULL)
+	    {
+		if (vcp->vc_cpto == 0)
+		    utf16_to_utf8(tmp, tmp_len, retval);
+		else
+		    WideCharToMultiByte(vcp->vc_cpto, 0,
+					  tmp, tmp_len,
+					  (char *)retval, retlen, 0, 0);
+		retval[retlen] = NUL;
+		if (lenp != NULL)
+		    *lenp = retlen;
+	    }
+	    vim_free(tmp);
+	    break;
+	}
+# endif
+    }
+
+    return retval;
+}