Adding upstream version 2:9.1.0016.upstream/2%9.1.0016

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

1 files changed, 2779 insertions, 0 deletions

diff --git a/src/scriptfile.c b/src/scriptfile.c
new file mode 100644
index 0000000..69016bf
--- /dev/null
+++ b/src/scriptfile.c
@@ -0,0 +1,2779 @@
+/* vi:set ts=8 sts=4 sw=4 noet:
+ *
+ * VIM - Vi IMproved	by Bram Moolenaar
+ *
+ * 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.
+ */
+
+/*
+ * scriptfile.c: functions for dealing with the runtime directories/files
+ */
+
+#include "vim.h"
+
+#if defined(FEAT_EVAL) || defined(PROTO)
+// The names of packages that once were loaded are remembered.
+static garray_T		ga_loaded = {0, 0, sizeof(char_u *), 4, NULL};
+#endif
+
+// last used sequence number for sourcing scripts (current_sctx.sc_seq)
+#ifdef FEAT_EVAL
+static int		last_current_SID_seq = 0;
+#endif
+
+static int do_source_ext(char_u *fname, int check_other, int is_vimrc, int *ret_sid, exarg_T *eap, int clearvars);
+
+/*
+ * Initialize the execution stack.
+ */
+    void
+estack_init(void)
+{
+    estack_T *entry;
+
+    if (ga_grow(&exestack, 10) == FAIL)
+	mch_exit(0);
+    entry = ((estack_T *)exestack.ga_data) + exestack.ga_len;
+    entry->es_type = ETYPE_TOP;
+    entry->es_name = NULL;
+    entry->es_lnum = 0;
+#ifdef FEAT_EVAL
+    entry->es_info.ufunc = NULL;
+#endif
+    ++exestack.ga_len;
+}
+
+/*
+ * Add an item to the execution stack.
+ * Returns the new entry or NULL when out of memory.
+ */
+    estack_T *
+estack_push(etype_T type, char_u *name, long lnum)
+{
+    estack_T *entry;
+
+    // If memory allocation fails then we'll pop more than we push, eventually
+    // at the top level it will be OK again.
+    if (ga_grow(&exestack, 1) == FAIL)
+	return NULL;
+
+    entry = ((estack_T *)exestack.ga_data) + exestack.ga_len;
+    entry->es_type = type;
+    entry->es_name = name;
+    entry->es_lnum = lnum;
+#ifdef FEAT_EVAL
+    entry->es_info.ufunc = NULL;
+#endif
+    ++exestack.ga_len;
+    return entry;
+}
+
+#if defined(FEAT_EVAL) || defined(PROTO)
+/*
+ * Add a user function to the execution stack.
+ */
+    estack_T *
+estack_push_ufunc(ufunc_T *ufunc, long lnum)
+{
+    estack_T *entry = estack_push(ETYPE_UFUNC,
+	    ufunc->uf_name_exp != NULL
+				  ? ufunc->uf_name_exp : ufunc->uf_name, lnum);
+    if (entry != NULL)
+	entry->es_info.ufunc = ufunc;
+    return entry;
+}
+
+/*
+ * Return TRUE if "ufunc" with "lnum" is already at the top of the exe stack.
+ */
+    int
+estack_top_is_ufunc(ufunc_T *ufunc, long lnum)
+{
+    estack_T *entry;
+
+    if (exestack.ga_len == 0)
+	return FALSE;
+    entry = ((estack_T *)exestack.ga_data) + exestack.ga_len - 1;
+    return entry->es_type == ETYPE_UFUNC
+	&& STRCMP( entry->es_name, ufunc->uf_name_exp != NULL
+				    ? ufunc->uf_name_exp : ufunc->uf_name) == 0
+	&& entry->es_lnum == lnum;
+}
+#endif
+
+/*
+ * Take an item off of the execution stack and return it.
+ */
+    estack_T *
+estack_pop(void)
+{
+    if (exestack.ga_len == 0)
+	return NULL;
+    --exestack.ga_len;
+    return ((estack_T *)exestack.ga_data) + exestack.ga_len;
+}
+
+/*
+ * Get the current value for "which" in allocated memory.
+ * "which" is ESTACK_SFILE for <sfile>, ESTACK_STACK for <stack> or
+ * ESTACK_SCRIPT for <script>.
+ */
+    char_u *
+estack_sfile(estack_arg_T which UNUSED)
+{
+    estack_T	*entry;
+#ifdef FEAT_EVAL
+    garray_T	ga;
+    size_t	len;
+    int		idx;
+    etype_T	last_type = ETYPE_SCRIPT;
+#endif
+
+    entry = ((estack_T *)exestack.ga_data) + exestack.ga_len - 1;
+#ifdef FEAT_EVAL
+    if (which == ESTACK_SFILE && entry->es_type != ETYPE_UFUNC)
+#endif
+    {
+	if (entry->es_name == NULL)
+	    return NULL;
+	return vim_strsave(entry->es_name);
+    }
+#ifdef FEAT_EVAL
+    // expand('<sfile>') works in a function for backwards compatibility, but
+    // may give an unexpected result.  Disallow it in Vim 9 script.
+    if (which == ESTACK_SFILE && in_vim9script())
+    {
+	int  save_emsg_off = emsg_off;
+
+	if (emsg_off == 1)
+	    // f_expand() silences errors but we do want this one
+	    emsg_off = 0;
+	emsg(_(e_cannot_expand_sfile_in_vim9_function));
+	emsg_off = save_emsg_off;
+	return NULL;
+    }
+
+    // If evaluated in a function or autocommand, return the path of the script
+    // where it is defined, at script level the current script path is returned
+    // instead.
+    if (which == ESTACK_SCRIPT)
+    {
+	// Walk the stack backwards, starting from the current frame.
+	for (idx = exestack.ga_len - 1; idx >= 0; --idx, --entry)
+	{
+	    if (entry->es_type == ETYPE_UFUNC || entry->es_type == ETYPE_AUCMD)
+	    {
+		sctx_T *def_ctx = entry->es_type == ETYPE_UFUNC
+				      ? &entry->es_info.ufunc->uf_script_ctx
+				      : acp_script_ctx(entry->es_info.aucmd);
+
+		return def_ctx->sc_sid > 0
+			   ? vim_strsave(SCRIPT_ITEM(def_ctx->sc_sid)->sn_name)
+			   : NULL;
+	    }
+	    else if (entry->es_type == ETYPE_SCRIPT)
+		return vim_strsave(entry->es_name);
+	}
+	return NULL;
+    }
+
+    // Give information about each stack entry up to the root.
+    // For a function we compose the call stack, as it was done in the past:
+    //   "function One[123]..Two[456]..Three"
+    ga_init2(&ga, sizeof(char), 100);
+    for (idx = 0; idx < exestack.ga_len; ++idx)
+    {
+	entry = ((estack_T *)exestack.ga_data) + idx;
+	if (entry->es_name != NULL)
+	{
+	    long    lnum = 0;
+	    char_u  *type_name = (char_u *)"";
+	    char_u  *class_name = (char_u *)"";
+
+	    if (entry->es_type != last_type)
+	    {
+		switch (entry->es_type)
+		{
+		    case ETYPE_SCRIPT: type_name = (char_u *)"script "; break;
+		    case ETYPE_UFUNC: type_name = (char_u *)"function "; break;
+		    default: type_name = (char_u *)""; break;
+		}
+		last_type = entry->es_type;
+	    }
+	    if (entry->es_type == ETYPE_UFUNC && entry->es_info.ufunc->uf_class != NULL)
+		class_name = entry->es_info.ufunc->uf_class->class_name;
+	    if (idx == exestack.ga_len - 1)
+		lnum = which == ESTACK_STACK ? SOURCING_LNUM : 0;
+	    else
+		lnum = entry->es_lnum;
+	    len = STRLEN(entry->es_name) + STRLEN(type_name) + STRLEN(class_name) + 26;
+	    if (ga_grow(&ga, (int)len) == FAIL)
+		break;
+	    ga_concat(&ga, type_name);
+	    if (*class_name != NUL)
+	    {
+		// For class methods prepend "<class name>." to the function name.
+		ga_concat(&ga, class_name);
+		ga_append(&ga, '.');
+	    }
+	    ga_concat(&ga, entry->es_name);
+	    // For the bottom entry of <sfile>: do not add the line number, it is used in
+	    // <slnum>.  Also leave it out when the number is not set.
+	    if (lnum != 0)
+		ga.ga_len += vim_snprintf((char *)ga.ga_data + ga.ga_len, 23, "[%ld]",
+			lnum);
+	    if (idx != exestack.ga_len - 1)
+		ga_concat(&ga, (char_u *)"..");
+	}
+    }
+
+    ga_append(&ga, '\0');
+    return (char_u *)ga.ga_data;
+#endif
+}
+
+/*
+ * Get DIP_ flags from the [where] argument of a :runtime command.
+ * "*argp" is advanced to after the [where] argument if it is found.
+ */
+    static int
+get_runtime_cmd_flags(char_u **argp, size_t where_len)
+{
+    char_u *arg = *argp;
+
+    if (where_len == 0)
+	return 0;
+
+    if (STRNCMP(arg, "START", where_len) == 0)
+    {
+	*argp = skipwhite(arg + where_len);
+	return DIP_START + DIP_NORTP;
+    }
+    if (STRNCMP(arg, "OPT", where_len) == 0)
+    {
+	*argp = skipwhite(arg + where_len);
+	return DIP_OPT + DIP_NORTP;
+    }
+    if (STRNCMP(arg, "PACK", where_len) == 0)
+    {
+	*argp = skipwhite(arg + where_len);
+	return DIP_START + DIP_OPT + DIP_NORTP;
+    }
+    if (STRNCMP(arg, "ALL", where_len) == 0)
+    {
+	*argp = skipwhite(arg + where_len);
+	return DIP_START + DIP_OPT;
+    }
+
+    return 0;
+}
+
+/*
+ * ":runtime [where] {name}"
+ */
+    void
+ex_runtime(exarg_T *eap)
+{
+    char_u  *arg = eap->arg;
+    int	    flags = eap->forceit ? DIP_ALL : 0;
+    char_u  *p = skiptowhite(arg);
+    flags += get_runtime_cmd_flags(&arg, p - arg);
+    source_runtime(arg, flags);
+}
+
+static int runtime_expand_flags;
+
+/*
+ * Set the completion context for the :runtime command.
+ */
+    void
+set_context_in_runtime_cmd(expand_T *xp, char_u *arg)
+{
+    char_u  *p = skiptowhite(arg);
+    runtime_expand_flags
+	= *p != NUL ? get_runtime_cmd_flags(&arg, p - arg) : 0;
+    // Skip to the last argument.
+    while (*(p = skiptowhite_esc(arg)) != NUL)
+    {
+	if (runtime_expand_flags == 0)
+	    // When there are multiple arguments and [where] is not specified,
+	    // use an unrelated non-zero flag to avoid expanding [where].
+	    runtime_expand_flags = DIP_ALL;
+	arg = skipwhite(p);
+    }
+    xp->xp_context = EXPAND_RUNTIME;
+    xp->xp_pattern = arg;
+}
+
+    static void
+source_callback(char_u *fname, void *cookie)
+{
+    (void)do_source(fname, FALSE, DOSO_NONE, cookie);
+}
+
+#ifdef FEAT_EVAL
+/*
+ * Find an already loaded script "name".
+ * If found returns its script ID.  If not found returns -1.
+ */
+    int
+find_script_by_name(char_u *name)
+{
+    int		    sid;
+    scriptitem_T    *si;
+
+    for (sid = script_items.ga_len; sid > 0; --sid)
+    {
+	// We used to check inode here, but that doesn't work:
+	// - If a script is edited and written, it may get a different
+	//   inode number, even though to the user it is the same script.
+	// - If a script is deleted and another script is written, with a
+	//   different name, the inode may be re-used.
+	si = SCRIPT_ITEM(sid);
+	if (si->sn_name != NULL && fnamecmp(si->sn_name, name) == 0)
+	    return sid;
+    }
+    return -1;
+}
+
+/*
+ * Add a new scriptitem with all items initialized.
+ * When running out of memory "error" is set to FAIL.
+ * Returns the script ID.
+ */
+    static int
+get_new_scriptitem(int *error)
+{
+    static scid_T   last_current_SID = 0;
+    int		    sid = ++last_current_SID;
+    scriptitem_T    *si = NULL;
+
+    if (ga_grow(&script_items, (int)(sid - script_items.ga_len)) == FAIL)
+    {
+	*error = FAIL;
+	return sid;
+    }
+    while (script_items.ga_len < sid)
+    {
+	si = ALLOC_CLEAR_ONE(scriptitem_T);
+	if (si == NULL)
+	{
+	    *error = FAIL;
+	    return sid;
+	}
+	++script_items.ga_len;
+	SCRIPT_ITEM(script_items.ga_len) = si;
+	si->sn_name = NULL;
+	si->sn_version = 1;
+
+	// Allocate the local script variables to use for this script.
+	new_script_vars(script_items.ga_len);
+	ga_init2(&si->sn_var_vals, sizeof(svar_T), 10);
+	hash_init(&si->sn_all_vars.dv_hashtab);
+	ga_init2(&si->sn_imports, sizeof(imported_T), 10);
+	ga_init2(&si->sn_type_list, sizeof(type_T), 10);
+# ifdef FEAT_PROFILE
+	si->sn_prof_on = FALSE;
+# endif
+    }
+
+    // "si" can't be NULL, check only to avoid a compiler warning
+    if (si != NULL)
+	// Used to check script variable index is still valid.
+	si->sn_script_seq = current_sctx.sc_seq;
+
+    return sid;
+}
+
+    int
+get_new_scriptitem_for_fname(int *error, char_u *fname)
+{
+    int sid = get_new_scriptitem(error);
+
+    if (*error == OK)
+    {
+	scriptitem_T *si = SCRIPT_ITEM(sid);
+
+	si->sn_name = vim_strsave(fname);
+	si->sn_state = SN_STATE_NOT_LOADED;
+    }
+    return sid;
+}
+
+    static void
+find_script_callback(char_u *fname, void *cookie)
+{
+    int sid;
+    int error = OK;
+    int *ret_sid = cookie;
+
+    sid = find_script_by_name(fname);
+    if (sid < 0)
+	// script does not exist yet, create a new scriptitem
+	sid = get_new_scriptitem_for_fname(&error, fname);
+    *ret_sid = sid;
+}
+#endif
+
+/*
+ * Find the patterns in "name" in all directories in "path" and invoke
+ * "callback(fname, cookie)".
+ * "prefix" is prepended to each pattern in "name".
+ * When "flags" has DIP_ALL: source all files, otherwise only the first one.
+ * When "flags" has DIP_DIR: find directories instead of files.
+ * When "flags" has DIP_ERR: give an error message if there is no match.
+ *
+ * Return FAIL when no file could be sourced, OK otherwise.
+ */
+    int
+do_in_path(
+    char_u	*path,
+    char	*prefix,
+    char_u	*name,
+    int		flags,
+    void	(*callback)(char_u *fname, void *ck),
+    void	*cookie)
+{
+    char_u	*rtp;
+    char_u	*np;
+    char_u	*buf;
+    char_u	*rtp_copy;
+    char_u	*tail;
+    int		num_files;
+    char_u	**files;
+    int		i;
+    int		did_one = FALSE;
+#ifdef AMIGA
+    struct Process	*proc = (struct Process *)FindTask(0L);
+    APTR		save_winptr = proc->pr_WindowPtr;
+
+    // Avoid a requester here for a volume that doesn't exist.
+    proc->pr_WindowPtr = (APTR)-1L;
+#endif
+
+    // Make a copy of 'runtimepath'.  Invoking the callback may change the
+    // value.
+    rtp_copy = vim_strsave(path);
+    buf = alloc(MAXPATHL);
+    if (buf != NULL && rtp_copy != NULL)
+    {
+	if (p_verbose > 10 && name != NULL)
+	{
+	    verbose_enter();
+	    if (*prefix != NUL)
+		smsg(_("Searching for \"%s\" under \"%s\" in \"%s\""),
+					   (char *)name, prefix, (char *)path);
+	    else
+		smsg(_("Searching for \"%s\" in \"%s\""),
+						   (char *)name, (char *)path);
+	    verbose_leave();
+	}
+
+	// Loop over all entries in 'runtimepath'.
+	rtp = rtp_copy;
+	while (*rtp != NUL && ((flags & DIP_ALL) || !did_one))
+	{
+	    size_t buflen;
+
+	    // Copy the path from 'runtimepath' to buf[].
+	    copy_option_part(&rtp, buf, MAXPATHL, ",");
+	    buflen = STRLEN(buf);
+
+	    // Skip after or non-after directories.
+	    if (flags & (DIP_NOAFTER | DIP_AFTER))
+	    {
+		int is_after = buflen >= 5
+				     && STRCMP(buf + buflen - 5, "after") == 0;
+
+		if ((is_after && (flags & DIP_NOAFTER))
+			|| (!is_after && (flags & DIP_AFTER)))
+		    continue;
+	    }
+
+	    if (name == NULL)
+	    {
+		(*callback)(buf, (void *) &cookie);
+		if (!did_one)
+		    did_one = (cookie == NULL);
+	    }
+	    else if (buflen + 2 + STRLEN(prefix) + STRLEN(name) < MAXPATHL)
+	    {
+		add_pathsep(buf);
+		STRCAT(buf, prefix);
+		tail = buf + STRLEN(buf);
+
+		// Loop over all patterns in "name"
+		np = name;
+		while (*np != NUL && ((flags & DIP_ALL) || !did_one))
+		{
+		    // Append the pattern from "name" to buf[].
+		    copy_option_part(&np, tail, (int)(MAXPATHL - (tail - buf)),
+								       "\t ");
+
+		    if (p_verbose > 10)
+		    {
+			verbose_enter();
+			smsg(_("Searching for \"%s\""), buf);
+			verbose_leave();
+		    }
+
+		    // Expand wildcards, invoke the callback for each match.
+		    if (gen_expand_wildcards(1, &buf, &num_files, &files,
+				  (flags & DIP_DIR) ? EW_DIR : EW_FILE) == OK)
+		    {
+			for (i = 0; i < num_files; ++i)
+			{
+			    (*callback)(files[i], cookie);
+			    did_one = TRUE;
+			    if (!(flags & DIP_ALL))
+				break;
+			}
+			FreeWild(num_files, files);
+		    }
+		}
+	    }
+	}
+    }
+    vim_free(buf);
+    vim_free(rtp_copy);
+    if (!did_one && name != NULL)
+    {
+	char *basepath = path == p_rtp ? "runtimepath" : "packpath";
+
+	if (flags & DIP_ERR)
+	    semsg(_(e_directory_not_found_in_str_str), basepath, name);
+	else if (p_verbose > 0)
+	{
+	    verbose_enter();
+	    smsg(_("not found in '%s': \"%s\""), basepath, name);
+	    verbose_leave();
+	}
+    }
+
+#ifdef AMIGA
+    proc->pr_WindowPtr = save_winptr;
+#endif
+
+    return did_one ? OK : FAIL;
+}
+
+/*
+ * Find "name" in "path".  When found, invoke the callback function for
+ * it: callback(fname, "cookie")
+ * When "flags" has DIP_ALL repeat for all matches, otherwise only the first
+ * one is used.
+ * Returns OK when at least one match found, FAIL otherwise.
+ *
+ * If "name" is NULL calls callback for each entry in "path". Cookie is
+ * passed by reference in this case, setting it to NULL indicates that callback
+ * has done its job.
+ */
+    static int
+do_in_path_and_pp(
+    char_u	*path,
+    char_u	*name,
+    int		flags,
+    void	(*callback)(char_u *fname, void *ck),
+    void	*cookie)
+{
+    int		done = FAIL;
+
+    if ((flags & DIP_NORTP) == 0)
+	done = do_in_path(path, "", name, flags, callback, cookie);
+
+    if ((done == FAIL || (flags & DIP_ALL)) && (flags & DIP_START))
+	done = do_in_path(p_pp, "pack/*/start/*/", name, flags, callback,
+								       cookie);
+
+    if ((done == FAIL || (flags & DIP_ALL)) && (flags & DIP_OPT))
+	done = do_in_path(p_pp, "pack/*/opt/*/", name, flags, callback,
+								       cookie);
+
+    return done;
+}
+
+/*
+ * Just like do_in_path_and_pp(), using 'runtimepath' for "path".
+ */
+    int
+do_in_runtimepath(
+    char_u	*name,
+    int		flags,
+    void	(*callback)(char_u *fname, void *ck),
+    void	*cookie)
+{
+    return do_in_path_and_pp(p_rtp, name, flags, callback, cookie);
+}
+
+/*
+ * Source the file "name" from all directories in 'runtimepath'.
+ * "name" can contain wildcards.
+ * When "flags" has DIP_ALL: source all files, otherwise only the first one.
+ *
+ * return FAIL when no file could be sourced, OK otherwise.
+ */
+    int
+source_runtime(char_u *name, int flags)
+{
+    return source_in_path(p_rtp, name, flags, NULL);
+}
+
+/*
+ * Just like source_runtime(), but use "path" instead of 'runtimepath'
+ * and return the script ID in "ret_sid".
+ */
+    int
+source_in_path(char_u *path, char_u *name, int flags, int *ret_sid)
+{
+    return do_in_path_and_pp(path, name, flags, source_callback, ret_sid);
+}
+
+#if defined(FEAT_EVAL) || defined(PROTO)
+
+/*
+ * Find "name" in 'runtimepath'. If found a new scriptitem is created for it
+ * and it's script ID is returned.
+ * If not found returns -1.
+ */
+    int
+find_script_in_rtp(char_u *name)
+{
+    int sid = -1;
+
+    (void)do_in_path_and_pp(p_rtp, name, DIP_NOAFTER,
+						   find_script_callback, &sid);
+    return sid;
+}
+
+/*
+ * Expand wildcards in "pat" and invoke do_source() for each match.
+ */
+    static void
+source_all_matches(char_u *pat)
+{
+    int	    num_files;
+    char_u  **files;
+    int	    i;
+
+    if (gen_expand_wildcards(1, &pat, &num_files, &files, EW_FILE) != OK)
+	return;
+
+    for (i = 0; i < num_files; ++i)
+	(void)do_source(files[i], FALSE, DOSO_NONE, NULL);
+    FreeWild(num_files, files);
+}
+
+/*
+ * Add the package directory to 'runtimepath'.
+ */
+    static int
+add_pack_dir_to_rtp(char_u *fname)
+{
+    char_u  *p4, *p3, *p2, *p1, *p;
+    char_u  *entry;
+    char_u  *insp = NULL;
+    int	    c;
+    char_u  *new_rtp;
+    int	    keep;
+    size_t  oldlen;
+    size_t  addlen;
+    size_t  new_rtp_len;
+    char_u  *afterdir = NULL;
+    size_t  afterlen = 0;
+    char_u  *after_insp = NULL;
+    char_u  *ffname = NULL;
+    size_t  fname_len;
+    char_u  *buf = NULL;
+    char_u  *rtp_ffname;
+    int	    match;
+    int	    retval = FAIL;
+
+    p4 = p3 = p2 = p1 = get_past_head(fname);
+    for (p = p1; *p; MB_PTR_ADV(p))
+	if (vim_ispathsep_nocolon(*p))
+	{
+	    p4 = p3; p3 = p2; p2 = p1; p1 = p;
+	}
+
+    // now we have:
+    // rtp/pack/name/start/name
+    //    p4   p3   p2    p1
+    //
+    // find the part up to "pack" in 'runtimepath'
+    c = *++p4; // append pathsep in order to expand symlink
+    *p4 = NUL;
+    ffname = fix_fname(fname);
+    *p4 = c;
+    if (ffname == NULL)
+	return FAIL;
+
+    // Find "ffname" in "p_rtp", ignoring '/' vs '\' differences.
+    // Also stop at the first "after" directory.
+    fname_len = STRLEN(ffname);
+    buf = alloc(MAXPATHL);
+    if (buf == NULL)
+	goto theend;
+    for (entry = p_rtp; *entry != NUL; )
+    {
+	char_u *cur_entry = entry;
+
+	copy_option_part(&entry, buf, MAXPATHL, ",");
+
+	if ((p = (char_u *)strstr((char *)buf, "after")) != NULL
+		&& p > buf
+		&& vim_ispathsep(p[-1])
+		&& (vim_ispathsep(p[5]) || p[5] == NUL || p[5] == ','))
+	{
+	    if (insp == NULL)
+		// Did not find "ffname" before the first "after" directory,
+		// insert it before this entry.
+		insp = cur_entry;
+	    after_insp = cur_entry;
+	    break;
+	}
+
+	if (insp == NULL)
+	{
+	    add_pathsep(buf);
+	    rtp_ffname = fix_fname(buf);
+	    if (rtp_ffname == NULL)
+		goto theend;
+	    match = vim_fnamencmp(rtp_ffname, ffname, fname_len) == 0;
+	    vim_free(rtp_ffname);
+	    if (match)
+		// Insert "ffname" after this entry (and comma).
+		insp = entry;
+	}
+    }
+
+    if (insp == NULL)
+	// Both "fname" and "after" not found, append at the end.
+	insp = p_rtp + STRLEN(p_rtp);
+
+    // check if rtp/pack/name/start/name/after exists
+    afterdir = concat_fnames(fname, (char_u *)"after", TRUE);
+    if (afterdir != NULL && mch_isdir(afterdir))
+	afterlen = STRLEN(afterdir) + 1; // add one for comma
+
+    oldlen = STRLEN(p_rtp);
+    addlen = STRLEN(fname) + 1; // add one for comma
+    new_rtp = alloc(oldlen + addlen + afterlen + 1); // add one for NUL
+    if (new_rtp == NULL)
+	goto theend;
+
+    // We now have 'rtp' parts: {keep}{keep_after}{rest}.
+    // Create new_rtp, first: {keep},{fname}
+    keep = (int)(insp - p_rtp);
+    mch_memmove(new_rtp, p_rtp, keep);
+    new_rtp_len = keep;
+    if (*insp == NUL)
+	new_rtp[new_rtp_len++] = ',';  // add comma before
+    mch_memmove(new_rtp + new_rtp_len, fname, addlen - 1);
+    new_rtp_len += addlen - 1;
+    if (*insp != NUL)
+	new_rtp[new_rtp_len++] = ',';  // add comma after
+
+    if (afterlen > 0 && after_insp != NULL)
+    {
+	int keep_after = (int)(after_insp - p_rtp);
+
+	// Add to new_rtp: {keep},{fname}{keep_after},{afterdir}
+	mch_memmove(new_rtp + new_rtp_len, p_rtp + keep,
+							keep_after - keep);
+	new_rtp_len += keep_after - keep;
+	mch_memmove(new_rtp + new_rtp_len, afterdir, afterlen - 1);
+	new_rtp_len += afterlen - 1;
+	new_rtp[new_rtp_len++] = ',';
+	keep = keep_after;
+    }
+
+    if (p_rtp[keep] != NUL)
+	// Append rest: {keep},{fname}{keep_after},{afterdir}{rest}
+	mch_memmove(new_rtp + new_rtp_len, p_rtp + keep, oldlen - keep + 1);
+    else
+	new_rtp[new_rtp_len] = NUL;
+
+    if (afterlen > 0 && after_insp == NULL)
+    {
+	// Append afterdir when "after" was not found:
+	// {keep},{fname}{rest},{afterdir}
+	STRCAT(new_rtp, ",");
+	STRCAT(new_rtp, afterdir);
+    }
+
+    set_option_value_give_err((char_u *)"rtp", 0L, new_rtp, 0);
+    vim_free(new_rtp);
+    retval = OK;
+
+theend:
+    vim_free(buf);
+    vim_free(ffname);
+    vim_free(afterdir);
+    return retval;
+}
+
+/*
+ * Load scripts in "plugin" and "ftdetect" directories of the package.
+ */
+    static int
+load_pack_plugin(char_u *fname)
+{
+    static char *plugpat = "%s/plugin/**/*.vim";
+    static char *ftpat = "%s/ftdetect/*.vim";
+    int		len;
+    char_u	*ffname = fix_fname(fname);
+    char_u	*pat = NULL;
+    int		retval = FAIL;
+
+    if (ffname == NULL)
+	return FAIL;
+    len = (int)STRLEN(ffname) + (int)STRLEN(ftpat);
+    pat = alloc(len);
+    if (pat == NULL)
+	goto theend;
+    vim_snprintf((char *)pat, len, plugpat, ffname);
+    source_all_matches(pat);
+
+    {
+	char_u *cmd = vim_strsave((char_u *)"g:did_load_filetypes");
+
+	// If runtime/filetype.vim wasn't loaded yet, the scripts will be
+	// found when it loads.
+	if (cmd != NULL && eval_to_number(cmd, FALSE) > 0)
+	{
+	    do_cmdline_cmd((char_u *)"augroup filetypedetect");
+	    vim_snprintf((char *)pat, len, ftpat, ffname);
+	    source_all_matches(pat);
+	    do_cmdline_cmd((char_u *)"augroup END");
+	}
+	vim_free(cmd);
+    }
+    vim_free(pat);
+    retval = OK;
+
+theend:
+    vim_free(ffname);
+    return retval;
+}
+
+// used for "cookie" of add_pack_plugin()
+static int APP_ADD_DIR;
+static int APP_LOAD;
+static int APP_BOTH;
+
+    static void
+add_pack_plugin(char_u *fname, void *cookie)
+{
+    if (cookie != &APP_LOAD)
+    {
+	char_u	*buf = alloc(MAXPATHL);
+	char_u	*p;
+	int	found = FALSE;
+
+	if (buf == NULL)
+	    return;
+	p = p_rtp;
+	while (*p != NUL)
+	{
+	    copy_option_part(&p, buf, MAXPATHL, ",");
+	    if (pathcmp((char *)buf, (char *)fname, -1) == 0)
+	    {
+		found = TRUE;
+		break;
+	    }
+	}
+	vim_free(buf);
+	if (!found)
+	    // directory is not yet in 'runtimepath', add it
+	    if (add_pack_dir_to_rtp(fname) == FAIL)
+		return;
+    }
+
+    if (cookie != &APP_ADD_DIR)
+	load_pack_plugin(fname);
+}
+
+/*
+ * Add all packages in the "start" directory to 'runtimepath'.
+ */
+    void
+add_pack_start_dirs(void)
+{
+    do_in_path(p_pp, "", (char_u *)"pack/*/start/*", DIP_ALL + DIP_DIR,
+					       add_pack_plugin, &APP_ADD_DIR);
+}
+
+/*
+ * Load plugins from all packages in the "start" directory.
+ */
+    void
+load_start_packages(void)
+{
+    did_source_packages = TRUE;
+    do_in_path(p_pp, "", (char_u *)"pack/*/start/*", DIP_ALL + DIP_DIR,
+						  add_pack_plugin, &APP_LOAD);
+}
+
+/*
+ * ":packloadall"
+ * Find plugins in the package directories and source them.
+ */
+    void
+ex_packloadall(exarg_T *eap)
+{
+    if (!did_source_packages || eap->forceit)
+    {
+	// First do a round to add all directories to 'runtimepath', then load
+	// the plugins. This allows for plugins to use an autoload directory
+	// of another plugin.
+	add_pack_start_dirs();
+	load_start_packages();
+    }
+}
+
+/*
+ * ":packadd[!] {name}"
+ */
+    void
+ex_packadd(exarg_T *eap)
+{
+    static char *plugpat = "pack/*/%s/%s";
+    int		len;
+    char	*pat;
+    int		round;
+    int		res = OK;
+
+    // Round 1: use "start", round 2: use "opt".
+    for (round = 1; round <= 2; ++round)
+    {
+	// Only look under "start" when loading packages wasn't done yet.
+	if (round == 1 && did_source_packages)
+	    continue;
+
+	len = (int)STRLEN(plugpat) + (int)STRLEN(eap->arg) + 5;
+	pat = alloc(len);
+	if (pat == NULL)
+	    return;
+	vim_snprintf(pat, len, plugpat, round == 1 ? "start" : "opt", eap->arg);
+	// The first round don't give a "not found" error, in the second round
+	// only when nothing was found in the first round.
+	res = do_in_path(p_pp, "", (char_u *)pat,
+		DIP_ALL + DIP_DIR + (round == 2 && res == FAIL ? DIP_ERR : 0),
+		add_pack_plugin, eap->forceit ? &APP_ADD_DIR : &APP_BOTH);
+	vim_free(pat);
+    }
+}
+#endif
+
+/*
+ * Sort "gap" and remove duplicate entries.  "gap" is expected to contain a
+ * list of file names in allocated memory.
+ */
+    void
+remove_duplicates(garray_T *gap)
+{
+    int	    i;
+    int	    j;
+    char_u  **fnames = (char_u **)gap->ga_data;
+
+    sort_strings(fnames, gap->ga_len);
+    for (i = gap->ga_len - 1; i > 0; --i)
+	if (fnamecmp(fnames[i - 1], fnames[i]) == 0)
+	{
+	    vim_free(fnames[i]);
+	    for (j = i + 1; j < gap->ga_len; ++j)
+		fnames[j - 1] = fnames[j];
+	    --gap->ga_len;
+	}
+}
+
+    static void
+ExpandRTDir_int(
+    char_u	*pat,
+    size_t	pat_len,
+    int		flags,
+    int		keep_ext,
+    garray_T	*gap,
+    char	*dirnames[])
+{
+    for (int i = 0; dirnames[i] != NULL; ++i)
+    {
+	size_t		buf_len = STRLEN(dirnames[i]) + pat_len + 22;
+	char		*buf = alloc(buf_len);
+	if (buf == NULL)
+	{
+	    ga_clear_strings(gap);
+	    return;
+	}
+	char		*tail = buf + 15;
+	size_t		tail_buflen = buf_len - 15;
+	int		glob_flags = 0;
+	int		expand_dirs = FALSE;
+
+	if (*(dirnames[i]) == NUL)  // empty dir used for :runtime
+	    vim_snprintf(tail, tail_buflen, "%s*.vim", pat);
+	else
+	    vim_snprintf(tail, tail_buflen, "%s/%s*.vim", dirnames[i], pat);
+
+expand:
+	if ((flags & DIP_NORTP) == 0)
+	    globpath(p_rtp, (char_u *)tail, gap, glob_flags, expand_dirs);
+
+	if (flags & DIP_START)
+	{
+	    memcpy(tail - 15, "pack/*/start/*/", 15);
+	    globpath(p_pp, (char_u *)tail - 15, gap, glob_flags, expand_dirs);
+	}
+
+	if (flags & DIP_OPT)
+	{
+	    memcpy(tail - 13, "pack/*/opt/*/", 13);
+	    globpath(p_pp, (char_u *)tail - 13, gap, glob_flags, expand_dirs);
+	}
+
+	if (*(dirnames[i]) == NUL && !expand_dirs)
+	{
+	    // expand dir names in another round
+	    vim_snprintf(tail, tail_buflen, "%s*", pat);
+	    glob_flags = WILD_ADD_SLASH;
+	    expand_dirs = TRUE;
+	    goto expand;
+	}
+
+	vim_free(buf);
+    }
+
+    int pat_pathsep_cnt = 0;
+    for (size_t i = 0; i < pat_len; ++i)
+	if (vim_ispathsep(pat[i]))
+	    ++pat_pathsep_cnt;
+
+    for (int i = 0; i < gap->ga_len; ++i)
+    {
+	char_u *match = ((char_u **)gap->ga_data)[i];
+	char_u *s = match;
+	char_u *e = s + STRLEN(s);
+	if (e - 4 > s && !keep_ext && STRNICMP(e - 4, ".vim", 4) == 0)
+	{
+	    e -= 4;
+	    *e = NUL;
+	}
+
+	int match_pathsep_cnt = (e > s && e[-1] == '/') ? -1 : 0;
+	for (s = e; s > match; MB_PTR_BACK(match, s))
+	    if (s < match || (vim_ispathsep(*s)
+				     && ++match_pathsep_cnt > pat_pathsep_cnt))
+		break;
+	++s;
+	if (s != match)
+	    mch_memmove(match, s, e - s + 1);
+    }
+
+    if (gap->ga_len == 0)
+	return;
+
+    // Sort and remove duplicates which can happen when specifying multiple
+    // directories in dirnames.
+    remove_duplicates(gap);
+}
+
+/*
+ * Expand runtime file names.
+ * Search from 'runtimepath':
+ *   'runtimepath'/{dirnames}/{pat}.vim
+ * When "flags" has DIP_START: search also from "start" of 'packpath':
+ *   'packpath'/pack/ * /start/ * /{dirnames}/{pat}.vim
+ * When "flags" has DIP_OPT: search also from "opt" of 'packpath':
+ *   'packpath'/pack/ * /opt/ * /{dirnames}/{pat}.vim
+ * "dirnames" is an array with one or more directory names.
+ */
+    int
+ExpandRTDir(
+    char_u	*pat,
+    int		flags,
+    int		*num_file,
+    char_u	***file,
+    char	*dirnames[])
+{
+    *num_file = 0;
+    *file = NULL;
+
+    garray_T	ga;
+    ga_init2(&ga, sizeof(char *), 10);
+
+    ExpandRTDir_int(pat, STRLEN(pat), flags, FALSE, &ga, dirnames);
+
+    if (ga.ga_len == 0)
+	return FAIL;
+
+    *file = ga.ga_data;
+    *num_file = ga.ga_len;
+    return OK;
+}
+
+/*
+ * Handle command line completion for :runtime command.
+ */
+    int
+expand_runtime_cmd(char_u *pat, int *numMatches, char_u ***matches)
+{
+    *numMatches = 0;
+    *matches = NULL;
+
+    garray_T	ga;
+    ga_init2(&ga, sizeof(char *), 10);
+
+    size_t pat_len = (int)STRLEN(pat);
+    char *dirnames[] = {"", NULL};
+    ExpandRTDir_int(pat, pat_len, runtime_expand_flags, TRUE, &ga, dirnames);
+
+    // Try to complete values for [where] argument when none was found.
+    if (runtime_expand_flags == 0)
+    {
+	char *where_values[] = {"START", "OPT", "PACK", "ALL"};
+	for (size_t i = 0; i < ARRAY_LENGTH(where_values); ++i)
+	    if (STRNCMP(pat, where_values[i], pat_len) == 0)
+	    {
+		char_u *p = vim_strsave((char_u *)where_values[i]);
+		if (p != NULL && ga_add_string(&ga, p) == FAIL)
+		    vim_free(p);
+	    }
+    }
+
+    if (ga.ga_len == 0)
+	return FAIL;
+
+    *matches = ga.ga_data;
+    *numMatches = ga.ga_len;
+    return OK;
+}
+
+/*
+ * Expand loadplugin names:
+ * 'packpath'/pack/ * /opt/{pat}
+ */
+    int
+ExpandPackAddDir(
+    char_u	*pat,
+    int		*num_file,
+    char_u	***file)
+{
+    char_u	*s;
+    char_u	*e;
+    char_u	*match;
+    garray_T	ga;
+    int		i;
+    int		pat_len;
+
+    *num_file = 0;
+    *file = NULL;
+    pat_len = (int)STRLEN(pat);
+    ga_init2(&ga, sizeof(char *), 10);
+
+    s = alloc(pat_len + 26);
+    if (s == NULL)
+    {
+	ga_clear_strings(&ga);
+	return FAIL;
+    }
+    sprintf((char *)s, "pack/*/opt/%s*", pat);
+    globpath(p_pp, s, &ga, 0, TRUE);
+    vim_free(s);
+
+    for (i = 0; i < ga.ga_len; ++i)
+    {
+	match = ((char_u **)ga.ga_data)[i];
+	s = gettail(match);
+	e = s + STRLEN(s);
+	mch_memmove(match, s, e - s + 1);
+    }
+
+    if (ga.ga_len == 0)
+	return FAIL;
+
+    // Sort and remove duplicates which can happen when specifying multiple
+    // directories in dirnames.
+    remove_duplicates(&ga);
+
+    *file = ga.ga_data;
+    *num_file = ga.ga_len;
+    return OK;
+}
+
+    static void
+cmd_source(char_u *fname, exarg_T *eap)
+{
+    int clearvars = FALSE;
+
+    if (*fname != NUL && STRNCMP(fname, "++clear", 7) == 0)
+    {
+	// ++clear argument is supplied
+	clearvars = TRUE;
+	fname = fname + 7;
+	if (*fname != NUL)
+	{
+	    semsg(_(e_invalid_argument_str), eap->arg);
+	    return;
+	}
+    }
+
+    if (*fname != NUL && eap != NULL && eap->addr_count > 0)
+    {
+	// if a filename is specified to :source, then a range is not allowed
+	emsg(_(e_no_range_allowed));
+	return;
+    }
+
+    if (eap != NULL && *fname == NUL)
+    {
+	if (eap->forceit)
+	    // a file name is needed to source normal mode commands
+	    emsg(_(e_argument_required));
+	else
+	    // source ex commands from the current buffer
+	    do_source_ext(NULL, FALSE, FALSE, NULL, eap, clearvars);
+    }
+    else if (eap != NULL && eap->forceit)
+	// ":source!": read Normal mode commands
+	// Need to execute the commands directly.  This is required at least
+	// for:
+	// - ":g" command busy
+	// - after ":argdo", ":windo" or ":bufdo"
+	// - another command follows
+	// - inside a loop
+	openscript(fname, global_busy || listcmd_busy || eap->nextcmd != NULL
+#ifdef FEAT_EVAL
+						 || eap->cstack->cs_idx >= 0
+#endif
+						 );
+
+    // ":source" read ex commands
+    else if (do_source(fname, FALSE, DOSO_NONE, NULL) == FAIL)
+	semsg(_(e_cant_open_file_str), fname);
+}
+
+/*
+ * ":source {fname}"
+ */
+    void
+ex_source(exarg_T *eap)
+{
+#ifdef FEAT_BROWSE
+    if (cmdmod.cmod_flags & CMOD_BROWSE)
+    {
+	char_u *fname = NULL;
+
+	fname = do_browse(0, (char_u *)_("Source Vim script"), eap->arg,
+				      NULL, NULL,
+				      (char_u *)_(BROWSE_FILTER_MACROS), NULL);
+	if (fname != NULL)
+	{
+	    cmd_source(fname, eap);
+	    vim_free(fname);
+	}
+    }
+    else
+#endif
+	cmd_source(eap->arg, eap);
+}
+
+#if defined(FEAT_EVAL) || defined(PROTO)
+/*
+ * ":options"
+ */
+    void
+ex_options(
+    exarg_T	*eap UNUSED)
+{
+    char_u  buf[500];
+    int	    multi_mods = 0;
+
+    buf[0] = NUL;
+    (void)add_win_cmd_modifiers(buf, &cmdmod, &multi_mods);
+
+    vim_setenv((char_u *)"OPTWIN_CMD", buf);
+    cmd_source((char_u *)SYS_OPTWIN_FILE, NULL);
+}
+#endif
+
+/*
+ * ":source" and associated commands.
+ */
+
+#if defined(FEAT_EVAL) || defined(PROTO)
+/*
+ * Return the address holding the next breakpoint line for a source cookie.
+ */
+    linenr_T *
+source_breakpoint(void *cookie)
+{
+    return &((source_cookie_T *)cookie)->breakpoint;
+}
+
+/*
+ * Return the address holding the debug tick for a source cookie.
+ */
+    int *
+source_dbg_tick(void *cookie)
+{
+    return &((source_cookie_T *)cookie)->dbg_tick;
+}
+
+/*
+ * Return the nesting level for a source cookie.
+ */
+    int
+source_level(void *cookie)
+{
+    return ((source_cookie_T *)cookie)->level;
+}
+
+/*
+ * Return the readahead line. Note that the pointer may become invalid when
+ * getting the next line, if it's concatenated with the next one.
+ */
+    char_u *
+source_nextline(void *cookie)
+{
+    return ((source_cookie_T *)cookie)->nextline;
+}
+#endif
+
+#if (defined(MSWIN) && defined(FEAT_CSCOPE)) || defined(HAVE_FD_CLOEXEC)
+# define USE_FOPEN_NOINH
+/*
+ * Special function to open a file without handle inheritance.
+ * When possible the handle is closed on exec().
+ */
+    static FILE *
+fopen_noinh_readbin(char *filename)
+{
+# ifdef MSWIN
+    int	fd_tmp = mch_open(filename, O_RDONLY | O_BINARY | O_NOINHERIT, 0);
+# else
+    int	fd_tmp = mch_open(filename, O_RDONLY, 0);
+# endif
+
+    if (fd_tmp == -1)
+	return NULL;
+
+# ifdef HAVE_FD_CLOEXEC
+    {
+	int fdflags = fcntl(fd_tmp, F_GETFD);
+	if (fdflags >= 0 && (fdflags & FD_CLOEXEC) == 0)
+	    (void)fcntl(fd_tmp, F_SETFD, fdflags | FD_CLOEXEC);
+    }
+# endif
+
+    return fdopen(fd_tmp, READBIN);
+}
+#endif
+
+/*
+ * Initialization for sourcing lines from the current buffer. Reads all the
+ * lines from the buffer and stores it in the cookie grow array.
+ * Returns a pointer to the name ":source buffer=<n>" on success and NULL on
+ * failure.
+ */
+    static char_u *
+do_source_buffer_init(source_cookie_T *sp, exarg_T *eap)
+{
+    linenr_T	curr_lnum;
+    char_u	*line = NULL;
+    char_u	*fname;
+
+    CLEAR_FIELD(*sp);
+
+    if (curbuf == NULL)
+	return NULL;
+
+    // Use ":source buffer=<num>" as the script name
+    vim_snprintf((char *)IObuff, IOSIZE, ":source buffer=%d", curbuf->b_fnum);
+    fname = vim_strsave(IObuff);
+    if (fname == NULL)
+	return NULL;
+
+    ga_init2(&sp->buflines, sizeof(char_u *), 100);
+
+    // Copy the lines from the buffer into a grow array
+    for (curr_lnum = eap->line1; curr_lnum <= eap->line2; curr_lnum++)
+    {
+	line = vim_strsave(ml_get(curr_lnum));
+	if (line == NULL)
+	    goto errret;
+	if (ga_add_string(&sp->buflines, line) == FAIL)
+	    goto errret;
+    }
+    sp->buf_lnum = 0;
+    sp->source_from_buf = TRUE;
+
+    return fname;
+
+errret:
+    vim_free(fname);
+    vim_free(line);
+    ga_clear_strings(&sp->buflines);
+    return NULL;
+}
+
+/*
+ * Read the file "fname" and execute its lines as EX commands.
+ * When "ret_sid" is not NULL and we loaded the script before, don't load it
+ * again.
+ *
+ * The "eap" argument is used when sourcing lines from a buffer instead of a
+ * file.
+ *
+ * If "clearvars" is TRUE, then for scripts which are loaded more than
+ * once, clear all the functions and variables previously defined in that
+ * script.
+ *
+ * This function may be called recursively!
+ *
+ * Return FAIL if file could not be opened, OK otherwise.
+ * If a scriptitem_T was found or created "*ret_sid" is set to the SID.
+ */
+    static int
+do_source_ext(
+    char_u	*fname,
+    int		check_other,	    // check for .vimrc and _vimrc
+    int		is_vimrc,	    // DOSO_ value
+    int		*ret_sid UNUSED,
+    exarg_T	*eap,
+    int		clearvars UNUSED)
+{
+    source_cookie_T	    cookie;
+    char_u		    *p;
+    char_u		    *fname_not_fixed = NULL;
+    char_u		    *fname_exp = NULL;
+    char_u		    *firstline = NULL;
+    int			    retval = FAIL;
+    sctx_T		    save_current_sctx;
+#ifdef STARTUPTIME
+    struct timeval	    tv_rel;
+    struct timeval	    tv_start;
+#endif
+#ifdef FEAT_PROFILE
+    proftime_T		    wait_start;
+#endif
+    int			    save_sticky_cmdmod_flags = sticky_cmdmod_flags;
+    int			    trigger_source_post = FALSE;
+#ifdef FEAT_EVAL
+    funccal_entry_T	    funccalp_entry;
+    int			    save_debug_break_level = debug_break_level;
+    int			    sid = -1;
+    scriptitem_T	    *si = NULL;
+    int			    save_estack_compiling = estack_compiling;
+    ESTACK_CHECK_DECLARATION;
+#endif
+
+    CLEAR_FIELD(cookie);
+    if (fname == NULL)
+    {
+	// sourcing lines from a buffer
+	fname_exp = do_source_buffer_init(&cookie, eap);
+	if (fname_exp == NULL)
+	    return FAIL;
+    }
+    else
+    {
+	fname_not_fixed = expand_env_save(fname);
+	if (fname_not_fixed == NULL)
+	    goto theend;
+	fname_exp = fix_fname(fname_not_fixed);
+	if (fname_exp == NULL)
+	    goto theend;
+	if (mch_isdir(fname_exp))
+	{
+	    smsg(_("Cannot source a directory: \"%s\""), fname);
+	    goto theend;
+	}
+    }
+#ifdef FEAT_EVAL
+    estack_compiling = FALSE;
+
+    // See if we loaded this script before.
+    sid = find_script_by_name(fname_exp);
+    if (sid > 0 && ret_sid != NULL
+			  && SCRIPT_ITEM(sid)->sn_state != SN_STATE_NOT_LOADED)
+    {
+	// Already loaded and no need to load again, return here.
+	*ret_sid = sid;
+	retval = OK;
+	goto theend;
+    }
+#endif
+
+    // Apply SourceCmd autocommands, they should get the file and source it.
+    if (has_autocmd(EVENT_SOURCECMD, fname_exp, NULL)
+	    && apply_autocmds(EVENT_SOURCECMD, fname_exp, fname_exp,
+							       FALSE, curbuf))
+    {
+#ifdef FEAT_EVAL
+	retval = aborting() ? FAIL : OK;
+#else
+	retval = OK;
+#endif
+	if (retval == OK)
+	    // Apply SourcePost autocommands.
+	    apply_autocmds(EVENT_SOURCEPOST, fname_exp, fname_exp,
+								FALSE, curbuf);
+	goto theend;
+    }
+
+    // Apply SourcePre autocommands, they may get the file.
+    apply_autocmds(EVENT_SOURCEPRE, fname_exp, fname_exp, FALSE, curbuf);
+
+    if (!cookie.source_from_buf)
+    {
+#ifdef USE_FOPEN_NOINH
+	cookie.fp = fopen_noinh_readbin((char *)fname_exp);
+#else
+	cookie.fp = mch_fopen((char *)fname_exp, READBIN);
+#endif
+    }
+    if (cookie.fp == NULL && check_other)
+    {
+	// Try again, replacing file name ".vimrc" by "_vimrc" or vice versa,
+	// and ".exrc" by "_exrc" or vice versa.
+	p = gettail(fname_exp);
+	if ((*p == '.' || *p == '_')
+		&& (STRICMP(p + 1, "vimrc") == 0
+		    || STRICMP(p + 1, "gvimrc") == 0
+		    || STRICMP(p + 1, "exrc") == 0))
+	{
+	    if (*p == '_')
+		*p = '.';
+	    else
+		*p = '_';
+#ifdef USE_FOPEN_NOINH
+	    cookie.fp = fopen_noinh_readbin((char *)fname_exp);
+#else
+	    cookie.fp = mch_fopen((char *)fname_exp, READBIN);
+#endif
+	}
+    }
+
+    if (cookie.fp == NULL && !cookie.source_from_buf)
+    {
+	if (p_verbose > 0)
+	{
+	    verbose_enter();
+	    if (SOURCING_NAME == NULL)
+		smsg(_("could not source \"%s\""), fname);
+	    else
+		smsg(_("line %ld: could not source \"%s\""),
+							SOURCING_LNUM, fname);
+	    verbose_leave();
+	}
+	goto theend;
+    }
+
+    // The file exists.
+    // - In verbose mode, give a message.
+    // - For a vimrc file, may want to set 'compatible', call vimrc_found().
+    if (p_verbose > 1)
+    {
+	verbose_enter();
+	if (SOURCING_NAME == NULL)
+	    smsg(_("sourcing \"%s\""), fname);
+	else
+	    smsg(_("line %ld: sourcing \"%s\""), SOURCING_LNUM, fname);
+	verbose_leave();
+    }
+    if (is_vimrc == DOSO_VIMRC)
+	vimrc_found(fname_exp, (char_u *)"MYVIMRC");
+    else if (is_vimrc == DOSO_GVIMRC)
+	vimrc_found(fname_exp, (char_u *)"MYGVIMRC");
+
+#ifdef USE_CRNL
+    // If no automatic file format: Set default to CR-NL.
+    if (*p_ffs == NUL)
+	cookie.fileformat = EOL_DOS;
+    else
+	cookie.fileformat = EOL_UNKNOWN;
+#endif
+
+    if (fname == NULL)
+	// When sourcing a range of lines from a buffer, use the buffer line
+	// number.
+	cookie.sourcing_lnum = eap->line1 - 1;
+    else
+	cookie.sourcing_lnum = 0;
+
+#ifdef FEAT_EVAL
+    // Check if this script has a breakpoint.
+    cookie.breakpoint = dbg_find_breakpoint(TRUE, fname_exp, (linenr_T)0);
+    cookie.fname = fname_exp;
+    cookie.dbg_tick = debug_tick;
+
+    cookie.level = ex_nesting_level;
+#endif
+
+#ifdef STARTUPTIME
+    if (time_fd != NULL)
+	time_push(&tv_rel, &tv_start);
+#endif
+
+    // "legacy" does not apply to commands in the script
+    sticky_cmdmod_flags = 0;
+
+    save_current_sctx = current_sctx;
+    if (cmdmod.cmod_flags & CMOD_VIM9CMD)
+	// When the ":vim9cmd" command modifier is used, source the script as a
+	// Vim9 script.
+	current_sctx.sc_version = SCRIPT_VERSION_VIM9;
+    else
+	current_sctx.sc_version = 1;  // default script version
+
+#ifdef FEAT_EVAL
+    current_sctx.sc_lnum = 0;
+
+# ifdef FEAT_PROFILE
+    if (do_profiling == PROF_YES)
+	prof_child_enter(&wait_start);		// entering a child now
+# endif
+
+    // Don't use local function variables, if called from a function.
+    // Also starts profiling timer for nested script.
+    save_funccal(&funccalp_entry);
+
+    // Reset "KeyTyped" to avoid some commands thinking they are invoked
+    // interactively.  E.g. defining a function would output indent.
+    int save_KeyTyped = KeyTyped;
+    KeyTyped = FALSE;
+
+    // Check if this script was sourced before to find its SID.
+    // Always use a new sequence number.
+    current_sctx.sc_seq = ++last_current_SID_seq;
+    if (sid > 0)
+    {
+	hashtab_T	*ht;
+	int		todo;
+	hashitem_T	*hi;
+	dictitem_T	*di;
+
+	// loading the same script again
+	current_sctx.sc_sid = sid;
+	si = SCRIPT_ITEM(sid);
+	if (si->sn_state == SN_STATE_NOT_LOADED)
+	{
+	    // this script was found but not loaded yet
+	    si->sn_state = SN_STATE_NEW;
+	}
+	else
+	{
+	    si->sn_state = SN_STATE_RELOAD;
+
+	    if (!clearvars)
+	    {
+		// Script-local variables remain but "const" can be set again.
+		// In Vim9 script variables will be cleared when "vim9script"
+		// is encountered without the "noclear" argument.
+		ht = &SCRIPT_VARS(sid);
+		todo = (int)ht->ht_used;
+		FOR_ALL_HASHTAB_ITEMS(ht, hi, todo)
+		    if (!HASHITEM_EMPTY(hi))
+		    {
+			--todo;
+			di = HI2DI(hi);
+			di->di_flags |= DI_FLAGS_RELOAD;
+		    }
+		// imports can be redefined once
+		mark_imports_for_reload(sid);
+	    }
+	    else
+		clear_vim9_scriptlocal_vars(sid);
+
+	    // reset version, "vim9script" may have been added or removed.
+	    si->sn_version = 1;
+	}
+    }
+    else
+    {
+	int error = OK;
+
+	// It's new, generate a new SID and initialize the scriptitem.
+	sid = get_new_scriptitem(&error);
+	current_sctx.sc_sid = sid;
+	if (error == FAIL)
+	    goto almosttheend;
+	si = SCRIPT_ITEM(sid);
+	si->sn_name = fname_exp;
+	fname_exp = vim_strsave(si->sn_name);  // used for autocmd
+	if (ret_sid != NULL)
+	    *ret_sid = sid;
+
+	// Remember the "is_vimrc" flag for when the file is sourced again.
+	si->sn_is_vimrc = is_vimrc;
+    }
+
+    // Keep the sourcing name/lnum, for recursive calls.
+    estack_push(ETYPE_SCRIPT, si->sn_name, 0);
+    ESTACK_CHECK_SETUP;
+
+# ifdef FEAT_PROFILE
+    if (do_profiling == PROF_YES)
+    {
+	int	forceit;
+
+	// Check if we do profiling for this script.
+	if (!si->sn_prof_on && has_profiling(TRUE, si->sn_name, &forceit, NULL))
+	{
+	    script_do_profile(si);
+	    si->sn_pr_force = forceit;
+	}
+	if (si->sn_prof_on)
+	{
+	    ++si->sn_pr_count;
+	    profile_start(&si->sn_pr_start);
+	    profile_zero(&si->sn_pr_children);
+	}
+    }
+# endif
+#else
+    // Keep the sourcing name/lnum, for recursive calls.
+    estack_push(ETYPE_SCRIPT, fname_exp, 0);
+#endif
+
+    cookie.conv.vc_type = CONV_NONE;		// no conversion
+
+    // Read the first line so we can check for a UTF-8 BOM.
+    firstline = getsourceline(0, (void *)&cookie, 0, TRUE);
+    if (firstline != NULL && STRLEN(firstline) >= 3 && firstline[0] == 0xef
+			      && firstline[1] == 0xbb && firstline[2] == 0xbf)
+    {
+	// Found BOM; setup conversion, skip over BOM and recode the line.
+	convert_setup(&cookie.conv, (char_u *)"utf-8", p_enc);
+	p = string_convert(&cookie.conv, firstline + 3, NULL);
+	if (p == NULL)
+	    p = vim_strsave(firstline + 3);
+	if (p != NULL)
+	{
+	    vim_free(firstline);
+	    firstline = p;
+	}
+    }
+
+    // Call do_cmdline, which will call getsourceline() to get the lines.
+    do_cmdline(firstline, getsourceline, (void *)&cookie,
+				     DOCMD_VERBOSE|DOCMD_NOWAIT|DOCMD_REPEAT);
+    retval = OK;
+
+#ifdef FEAT_PROFILE
+    if (do_profiling == PROF_YES)
+    {
+	// Get "si" again, "script_items" may have been reallocated.
+	si = SCRIPT_ITEM(sid);
+	if (si->sn_prof_on)
+	{
+	    profile_end(&si->sn_pr_start);
+	    profile_sub_wait(&wait_start, &si->sn_pr_start);
+	    profile_add(&si->sn_pr_total, &si->sn_pr_start);
+	    profile_self(&si->sn_pr_self, &si->sn_pr_start,
+							 &si->sn_pr_children);
+	}
+    }
+#endif
+
+    if (got_int)
+	emsg(_(e_interrupted));
+#ifdef FEAT_EVAL
+    ESTACK_CHECK_NOW;
+#endif
+    estack_pop();
+    if (p_verbose > 1)
+    {
+	verbose_enter();
+	smsg(_("finished sourcing %s"), fname);
+	if (SOURCING_NAME != NULL)
+	    smsg(_("continuing in %s"), SOURCING_NAME);
+	verbose_leave();
+    }
+#ifdef STARTUPTIME
+    if (time_fd != NULL)
+    {
+	vim_snprintf((char *)IObuff, IOSIZE, "sourcing %s", fname);
+	time_msg((char *)IObuff, &tv_start);
+	time_pop(&tv_rel);
+    }
+#endif
+
+    if (!got_int)
+	trigger_source_post = TRUE;
+
+#ifdef FEAT_EVAL
+    // After a "finish" in debug mode, need to break at first command of next
+    // sourced file.
+    if (save_debug_break_level > ex_nesting_level
+	    && debug_break_level == ex_nesting_level)
+	++debug_break_level;
+#endif
+
+#ifdef FEAT_EVAL
+almosttheend:
+    // If "sn_save_cpo" is set that means we encountered "vim9script": restore
+    // 'cpoptions', unless in the main .vimrc file.
+    // Get "si" again, "script_items" may have been reallocated.
+    si = SCRIPT_ITEM(sid);
+    if (si->sn_save_cpo != NULL && si->sn_is_vimrc == DOSO_NONE)
+    {
+	if (STRCMP(p_cpo, CPO_VIM) != 0)
+	{
+	    char_u *f;
+	    char_u *t;
+
+	    // 'cpo' was changed in the script.  Apply the same change to the
+	    // saved value, if possible.
+	    for (f = (char_u *)CPO_VIM; *f != NUL; ++f)
+		if (vim_strchr(p_cpo, *f) == NULL
+			&& (t = vim_strchr(si->sn_save_cpo, *f)) != NULL)
+		    // flag was removed, also remove it from the saved 'cpo'
+		    mch_memmove(t, t + 1, STRLEN(t));
+	    for (f = p_cpo; *f != NUL; ++f)
+		if (vim_strchr((char_u *)CPO_VIM, *f) == NULL
+			&& vim_strchr(si->sn_save_cpo, *f) == NULL)
+		{
+		    // flag was added, also add it to the saved 'cpo'
+		    t = alloc(STRLEN(si->sn_save_cpo) + 2);
+		    if (t != NULL)
+		    {
+			*t = *f;
+			STRCPY(t + 1, si->sn_save_cpo);
+			vim_free(si->sn_save_cpo);
+			si->sn_save_cpo = t;
+		    }
+		}
+	}
+	set_option_value_give_err((char_u *)"cpo",
+					   0L, si->sn_save_cpo, OPT_NO_REDRAW);
+    }
+    VIM_CLEAR(si->sn_save_cpo);
+
+    restore_funccal();
+# ifdef FEAT_PROFILE
+    if (do_profiling == PROF_YES)
+	prof_child_exit(&wait_start);		// leaving a child now
+# endif
+
+    KeyTyped = save_KeyTyped;
+#endif
+    current_sctx = save_current_sctx;
+
+    if (cookie.fp != NULL)
+	fclose(cookie.fp);
+    if (cookie.source_from_buf)
+	ga_clear_strings(&cookie.buflines);
+    vim_free(cookie.nextline);
+    vim_free(firstline);
+    convert_setup(&cookie.conv, NULL, NULL);
+
+    if (trigger_source_post)
+	apply_autocmds(EVENT_SOURCEPOST, fname_exp, fname_exp, FALSE, curbuf);
+
+theend:
+#ifdef FEAT_EVAL
+    if (sid > 0 && ret_sid != NULL
+	    && fname_not_fixed != NULL && fname_exp != NULL)
+    {
+	int not_fixed_sid = find_script_by_name(fname_not_fixed);
+
+	// If "fname_not_fixed" is a symlink then we source the linked file.
+	// If the original name is in the script list we add the ID of the
+	// script that was actually sourced.
+	if (SCRIPT_ID_VALID(not_fixed_sid) && not_fixed_sid != sid)
+	    SCRIPT_ITEM(not_fixed_sid)->sn_sourced_sid = sid;
+    }
+#endif
+
+    vim_free(fname_not_fixed);
+    vim_free(fname_exp);
+    sticky_cmdmod_flags = save_sticky_cmdmod_flags;
+#ifdef FEAT_EVAL
+    estack_compiling = save_estack_compiling;
+#endif
+    return retval;
+}
+
+    int
+do_source(
+    char_u	*fname,
+    int		check_other,	    // check for .vimrc and _vimrc
+    int		is_vimrc,	    // DOSO_ value
+    int		*ret_sid)
+{
+    return do_source_ext(fname, check_other, is_vimrc, ret_sid, NULL, FALSE);
+}
+
+
+#if defined(FEAT_EVAL) || defined(PROTO)
+
+/*
+ * ":scriptnames"
+ */
+    void
+ex_scriptnames(exarg_T *eap)
+{
+    int i;
+
+    if (eap->addr_count > 0 || *eap->arg != NUL)
+    {
+	// :script {scriptId}: edit the script
+	if (eap->addr_count > 0 && !SCRIPT_ID_VALID(eap->line2))
+	    emsg(_(e_invalid_argument));
+	else
+	{
+	    if (eap->addr_count > 0)
+		eap->arg = SCRIPT_ITEM(eap->line2)->sn_name;
+	    else
+	    {
+		expand_env(eap->arg, NameBuff, MAXPATHL);
+		eap->arg = NameBuff;
+	    }
+	    do_exedit(eap, NULL);
+	}
+	return;
+    }
+
+    for (i = 1; i <= script_items.ga_len && !got_int; ++i)
+    {
+	scriptitem_T *si = SCRIPT_ITEM(i);
+
+	if (si->sn_name != NULL)
+	{
+	    char sourced_buf[20];
+
+	    home_replace(NULL, si->sn_name, NameBuff, MAXPATHL, TRUE);
+	    if (si->sn_sourced_sid > 0)
+		vim_snprintf(sourced_buf, 20, "->%d", si->sn_sourced_sid);
+	    else
+		sourced_buf[0] = NUL;
+	    vim_snprintf((char *)IObuff, IOSIZE, "%3d%s%s: %s",
+		    i,
+		    sourced_buf,
+		    si->sn_state == SN_STATE_NOT_LOADED ? " A" : "",
+		    NameBuff);
+	    if (!message_filtered(IObuff))
+	    {
+		msg_putchar('\n');
+		msg_outtrans(IObuff);
+		out_flush();	    // output one line at a time
+		ui_breakcheck();
+	    }
+	}
+    }
+}
+
+# if defined(BACKSLASH_IN_FILENAME) || defined(PROTO)
+/*
+ * Fix slashes in the list of script names for 'shellslash'.
+ */
+    void
+scriptnames_slash_adjust(void)
+{
+    int i;
+
+    for (i = 1; i <= script_items.ga_len; ++i)
+	if (SCRIPT_ITEM(i)->sn_name != NULL)
+	    slash_adjust(SCRIPT_ITEM(i)->sn_name);
+}
+# endif
+
+/*
+ * Get a pointer to a script name.  Used for ":verbose set".
+ * Message appended to "Last set from "
+ */
+    char_u *
+get_scriptname(scid_T id)
+{
+    if (id == SID_MODELINE)
+	return (char_u *)_("modeline");
+    if (id == SID_CMDARG)
+	return (char_u *)_("--cmd argument");
+    if (id == SID_CARG)
+	return (char_u *)_("-c argument");
+    if (id == SID_ENV)
+	return (char_u *)_("environment variable");
+    if (id == SID_ERROR)
+	return (char_u *)_("error handler");
+    if (id == SID_WINLAYOUT)
+	return (char_u *)_("changed window size");
+    return SCRIPT_ITEM(id)->sn_name;
+}
+
+# if defined(EXITFREE) || defined(PROTO)
+    void
+free_scriptnames(void)
+{
+    int			i;
+
+    for (i = script_items.ga_len; i > 0; --i)
+    {
+	scriptitem_T *si = SCRIPT_ITEM(i);
+
+	// the variables themselves are cleared in evalvars_clear()
+	vim_free(si->sn_vars);
+
+	vim_free(si->sn_name);
+	free_imports_and_script_vars(i);
+	free_string_option(si->sn_save_cpo);
+#  ifdef FEAT_PROFILE
+	ga_clear(&si->sn_prl_ga);
+#  endif
+	vim_free(si->sn_autoload_prefix);
+	vim_free(si);
+    }
+    ga_clear(&script_items);
+}
+
+    void
+free_autoload_scriptnames(void)
+{
+    ga_clear_strings(&ga_loaded);
+}
+# endif
+
+    linenr_T
+get_sourced_lnum(
+	char_u *(*fgetline)(int, void *, int, getline_opt_T),
+	void *cookie)
+{
+    return fgetline == getsourceline
+			? ((source_cookie_T *)cookie)->sourcing_lnum
+			: SOURCING_LNUM;
+}
+
+/*
+ * Return a List of script-local functions defined in the script with id
+ * 'sid'.
+ */
+    static list_T *
+get_script_local_funcs(scid_T sid)
+{
+    hashtab_T	*functbl;
+    hashitem_T	*hi;
+    long_u	todo;
+    list_T	*l;
+
+    l = list_alloc();
+    if (l == NULL)
+	return NULL;
+
+    // Iterate through all the functions in the global function hash table
+    // looking for functions with script ID 'sid'.
+    functbl = func_tbl_get();
+    todo = functbl->ht_used;
+    FOR_ALL_HASHTAB_ITEMS(functbl, hi, todo)
+    {
+	ufunc_T	*fp;
+
+	if (HASHITEM_EMPTY(hi))
+	    continue;
+
+	--todo;
+	fp = HI2UF(hi);
+
+	// Add active functions with script id == 'sid'
+	if (!(fp->uf_flags & FC_DEAD) && (fp->uf_script_ctx.sc_sid == sid))
+	{
+	    char_u	*name;
+
+	    if (fp->uf_name_exp != NULL)
+		name = fp->uf_name_exp;
+	    else
+		name = fp->uf_name;
+
+	    list_append_string(l, name, -1);
+	}
+    }
+
+    return l;
+}
+
+/*
+ * getscriptinfo() function
+ */
+    void
+f_getscriptinfo(typval_T *argvars, typval_T *rettv)
+{
+    list_T	*l;
+    char_u	*pat = NULL;
+    regmatch_T	regmatch;
+    int		filterpat = FALSE;
+    scid_T	sid = -1;
+
+    if (rettv_list_alloc(rettv) == FAIL)
+	return;
+
+    if (check_for_opt_dict_arg(argvars, 0) == FAIL)
+	return;
+
+    l = rettv->vval.v_list;
+
+    regmatch.regprog = NULL;
+    regmatch.rm_ic = p_ic;
+
+    if (argvars[0].v_type == VAR_DICT)
+    {
+	dictitem_T *sid_di = dict_find(argvars[0].vval.v_dict,
+							   (char_u *)"sid", 3);
+	if (sid_di != NULL)
+	{
+	    int error = FALSE;
+	    sid = tv_get_number_chk(&sid_di->di_tv, &error);
+	    if (error)
+		return;
+	    if (sid <= 0)
+	    {
+		semsg(_(e_invalid_value_for_argument_str_str), "sid",
+						tv_get_string(&sid_di->di_tv));
+		return;
+	    }
+	}
+	else
+	{
+	    pat = dict_get_string(argvars[0].vval.v_dict, "name", TRUE);
+	    if (pat != NULL)
+		regmatch.regprog = vim_regcomp(pat, RE_MAGIC + RE_STRING);
+	    if (regmatch.regprog != NULL)
+		filterpat = TRUE;
+	}
+    }
+
+    for (varnumber_T i = sid > 0 ? sid : 1;
+		       (i == sid || sid <= 0) && i <= script_items.ga_len; ++i)
+    {
+	scriptitem_T	*si = SCRIPT_ITEM(i);
+	dict_T		*d;
+
+	if (si->sn_name == NULL)
+	    continue;
+
+	if (filterpat && !vim_regexec(&regmatch, si->sn_name, (colnr_T)0))
+	    continue;
+
+	if ((d = dict_alloc()) == NULL
+		|| list_append_dict(l, d) == FAIL
+		|| dict_add_string(d, "name", si->sn_name) == FAIL
+		|| dict_add_number(d, "sid", i) == FAIL
+		|| dict_add_number(d, "sourced", si->sn_sourced_sid) == FAIL
+		|| dict_add_number(d, "version", si->sn_version) == FAIL
+		|| dict_add_bool(d, "autoload",
+				si->sn_state == SN_STATE_NOT_LOADED) == FAIL)
+	    return;
+
+	// When a script ID is specified, return information about only the
+	// specified script, and add the script-local variables and functions.
+	if (sid > 0)
+	{
+	    dict_T	*var_dict;
+
+	    var_dict = dict_copy(&si->sn_vars->sv_dict, TRUE, TRUE,
+								get_copyID());
+	    if (var_dict == NULL
+		    || dict_add_dict(d, "variables", var_dict) == FAIL
+		    || dict_add_list(d, "functions",
+					get_script_local_funcs(sid)) == FAIL)
+		return;
+	}
+    }
+
+    vim_regfree(regmatch.regprog);
+    vim_free(pat);
+}
+
+#endif
+
+    static char_u *
+get_one_sourceline(source_cookie_T *sp)
+{
+    garray_T		ga;
+    int			len;
+    int			c;
+    char_u		*buf;
+#ifdef USE_CRNL
+    int			has_cr;		// CR-LF found
+#endif
+    int			have_read = FALSE;
+
+    // use a growarray to store the sourced line
+    ga_init2(&ga, 1, 250);
+
+    // Loop until there is a finished line (or end-of-file).
+    ++sp->sourcing_lnum;
+    for (;;)
+    {
+	// make room to read at least 120 (more) characters
+	if (ga_grow(&ga, 120) == FAIL)
+	    break;
+	if (sp->source_from_buf)
+	{
+	    if (sp->buf_lnum >= sp->buflines.ga_len)
+		break;		    // all the lines are processed
+	    ga_concat(&ga, ((char_u **)sp->buflines.ga_data)[sp->buf_lnum]);
+	    sp->buf_lnum++;
+	    if (ga_grow(&ga, 1) == FAIL)
+		break;
+	    buf = (char_u *)ga.ga_data;
+	    buf[ga.ga_len++] = NUL;
+	    len = ga.ga_len;
+	}
+	else
+	{
+	    buf = (char_u *)ga.ga_data;
+	    if (fgets((char *)buf + ga.ga_len, ga.ga_maxlen - ga.ga_len,
+			sp->fp) == NULL)
+		break;
+	    len = ga.ga_len + (int)STRLEN(buf + ga.ga_len);
+	}
+#ifdef USE_CRNL
+	// Ignore a trailing CTRL-Z, when in Dos mode.	Only recognize the
+	// CTRL-Z by its own, or after a NL.
+	if (	   (len == 1 || (len >= 2 && buf[len - 2] == '\n'))
+		&& sp->fileformat == EOL_DOS
+		&& buf[len - 1] == Ctrl_Z)
+	{
+	    buf[len - 1] = NUL;
+	    break;
+	}
+#endif
+
+	have_read = TRUE;
+	ga.ga_len = len;
+
+	// If the line was longer than the buffer, read more.
+	if (ga.ga_maxlen - ga.ga_len == 1 && buf[len - 1] != '\n')
+	    continue;
+
+	if (len >= 1 && buf[len - 1] == '\n')	// remove trailing NL
+	{
+#ifdef USE_CRNL
+	    has_cr = (len >= 2 && buf[len - 2] == '\r');
+	    if (sp->fileformat == EOL_UNKNOWN)
+	    {
+		if (has_cr)
+		    sp->fileformat = EOL_DOS;
+		else
+		    sp->fileformat = EOL_UNIX;
+	    }
+
+	    if (sp->fileformat == EOL_DOS)
+	    {
+		if (has_cr)	    // replace trailing CR
+		{
+		    buf[len - 2] = '\n';
+		    --len;
+		    --ga.ga_len;
+		}
+		else	    // lines like ":map xx yy^M" will have failed
+		{
+		    if (!sp->error)
+		    {
+			msg_source(HL_ATTR(HLF_W));
+			emsg(_("W15: Warning: Wrong line separator, ^M may be missing"));
+		    }
+		    sp->error = TRUE;
+		    sp->fileformat = EOL_UNIX;
+		}
+	    }
+#endif
+	    // The '\n' is escaped if there is an odd number of ^V's just
+	    // before it, first set "c" just before the 'V's and then check
+	    // len&c parities (is faster than ((len-c)%2 == 0)) -- Acevedo
+	    for (c = len - 2; c >= 0 && buf[c] == Ctrl_V; c--)
+		;
+	    if ((len & 1) != (c & 1))	// escaped NL, read more
+	    {
+		++sp->sourcing_lnum;
+		continue;
+	    }
+
+	    buf[len - 1] = NUL;		// remove the NL
+	}
+
+	// Check for ^C here now and then, so recursive :so can be broken.
+	line_breakcheck();
+	break;
+    }
+
+    if (have_read)
+	return (char_u *)ga.ga_data;
+
+    vim_free(ga.ga_data);
+    return NULL;
+}
+
+/*
+ * Get one full line from a sourced file.
+ * Called by do_cmdline() when it's called from do_source().
+ *
+ * Return a pointer to the line in allocated memory.
+ * Return NULL for end-of-file or some error.
+ */
+    char_u *
+getsourceline(
+	int c UNUSED,
+	void *cookie,
+	int indent UNUSED,
+	getline_opt_T options)
+{
+    source_cookie_T	*sp = (source_cookie_T *)cookie;
+    char_u		*line;
+    char_u		*p;
+    int			do_vim9_all = in_vim9script()
+					      && options == GETLINE_CONCAT_ALL;
+    int			do_bar_cont = do_vim9_all
+					 || options == GETLINE_CONCAT_CONTBAR;
+
+#ifdef FEAT_EVAL
+    // If breakpoints have been added/deleted need to check for it.
+    if ((sp->dbg_tick < debug_tick) && !sp->source_from_buf)
+    {
+	sp->breakpoint = dbg_find_breakpoint(TRUE, sp->fname, SOURCING_LNUM);
+	sp->dbg_tick = debug_tick;
+    }
+# ifdef FEAT_PROFILE
+    if (do_profiling == PROF_YES)
+	script_line_end();
+# endif
+#endif
+
+    // Set the current sourcing line number.
+    SOURCING_LNUM = sp->sourcing_lnum + 1;
+
+    // Get current line.  If there is a read-ahead line, use it, otherwise get
+    // one now.  "fp" is NULL if actually using a string.
+    if (sp->finished || (!sp->source_from_buf && sp->fp == NULL))
+	line = NULL;
+    else if (sp->nextline == NULL)
+	line = get_one_sourceline(sp);
+    else
+    {
+	line = sp->nextline;
+	sp->nextline = NULL;
+	++sp->sourcing_lnum;
+    }
+#ifdef FEAT_PROFILE
+    if (line != NULL && do_profiling == PROF_YES)
+	script_line_start();
+#endif
+
+    // Only concatenate lines starting with a \ when 'cpoptions' doesn't
+    // contain the 'C' flag.
+    if (line != NULL && options != GETLINE_NONE
+				      && vim_strchr(p_cpo, CPO_CONCAT) == NULL)
+    {
+	int comment_char = in_vim9script() ? '#' : '"';
+
+	// compensate for the one line read-ahead
+	--sp->sourcing_lnum;
+
+	// Get the next line and concatenate it when it starts with a
+	// backslash. We always need to read the next line, keep it in
+	// sp->nextline.
+	/* Also check for a comment in between continuation lines: "\ */
+	// Also check for a Vim9 comment, empty line, line starting with '|',
+	// but not "||".
+	sp->nextline = get_one_sourceline(sp);
+	if (sp->nextline != NULL
+		&& (*(p = skipwhite(sp->nextline)) == '\\'
+			      || (p[0] == comment_char
+						&& p[1] == '\\' && p[2] == ' ')
+			      || (do_vim9_all && (*p == NUL
+						     || vim9_comment_start(p)))
+			      || (do_bar_cont && p[0] == '|' && p[1] != '|')))
+	{
+	    garray_T    ga;
+
+	    ga_init2(&ga, sizeof(char_u), 400);
+	    ga_concat(&ga, line);
+	    if (*p == '\\')
+		ga_concat(&ga, p + 1);
+	    else if (*p == '|')
+	    {
+		ga_concat(&ga, (char_u *)" ");
+		ga_concat(&ga, p);
+	    }
+	    for (;;)
+	    {
+		vim_free(sp->nextline);
+		sp->nextline = get_one_sourceline(sp);
+		if (sp->nextline == NULL)
+		    break;
+		p = skipwhite(sp->nextline);
+		if (*p == '\\' || (do_bar_cont && p[0] == '|' && p[1] != '|'))
+		{
+		    // Adjust the growsize to the current length to speed up
+		    // concatenating many lines.
+		    if (ga.ga_len > 400)
+		    {
+			if (ga.ga_len > 8000)
+			    ga.ga_growsize = 8000;
+			else
+			    ga.ga_growsize = ga.ga_len;
+		    }
+		    if (*p == '\\')
+			ga_concat(&ga, p + 1);
+		    else
+		    {
+			ga_concat(&ga, (char_u *)" ");
+			ga_concat(&ga, p);
+		    }
+		}
+		else if (!(p[0] == (comment_char)
+						&& p[1] == '\\' && p[2] == ' ')
+		     && !(do_vim9_all && (*p == NUL || vim9_comment_start(p))))
+		    break;
+		/* drop a # comment or "\ comment line */
+	    }
+	    ga_append(&ga, NUL);
+	    vim_free(line);
+	    line = ga.ga_data;
+	}
+    }
+
+    if (line != NULL && sp->conv.vc_type != CONV_NONE)
+    {
+	char_u	*s;
+
+	// Convert the encoding of the script line.
+	s = string_convert(&sp->conv, line, NULL);
+	if (s != NULL)
+	{
+	    vim_free(line);
+	    line = s;
+	}
+    }
+
+#ifdef FEAT_EVAL
+    // Did we encounter a breakpoint?
+    if (!sp->source_from_buf && sp->breakpoint != 0
+	    && sp->breakpoint <= SOURCING_LNUM)
+    {
+	dbg_breakpoint(sp->fname, SOURCING_LNUM);
+	// Find next breakpoint.
+	sp->breakpoint = dbg_find_breakpoint(TRUE, sp->fname, SOURCING_LNUM);
+	sp->dbg_tick = debug_tick;
+    }
+#endif
+
+    return line;
+}
+
+/*
+ * Returns TRUE if sourcing a script either from a file or a buffer.
+ * Otherwise returns FALSE.
+ */
+    int
+sourcing_a_script(exarg_T *eap)
+{
+    return (getline_equal(eap->ea_getline, eap->cookie, getsourceline));
+}
+
+/*
+ * ":scriptencoding": Set encoding conversion for a sourced script.
+ */
+    void
+ex_scriptencoding(exarg_T *eap)
+{
+    source_cookie_T	*sp;
+    char_u		*name;
+
+    if (!sourcing_a_script(eap))
+    {
+	emsg(_(e_scriptencoding_used_outside_of_sourced_file));
+	return;
+    }
+
+    if (*eap->arg != NUL)
+    {
+	name = enc_canonize(eap->arg);
+	if (name == NULL)	// out of memory
+	    return;
+    }
+    else
+	name = eap->arg;
+
+    // Setup for conversion from the specified encoding to 'encoding'.
+    sp = (source_cookie_T *)getline_cookie(eap->ea_getline, eap->cookie);
+    convert_setup(&sp->conv, name, p_enc);
+
+    if (name != eap->arg)
+	vim_free(name);
+}
+
+/*
+ * ":scriptversion": Set Vim script version for a sourced script.
+ */
+    void
+ex_scriptversion(exarg_T *eap UNUSED)
+{
+    int		nr;
+
+    if (!sourcing_a_script(eap))
+    {
+	emsg(_(e_scriptversion_used_outside_of_sourced_file));
+	return;
+    }
+    if (in_vim9script())
+    {
+	emsg(_(e_cannot_use_scriptversion_after_vim9script));
+	return;
+    }
+
+    nr = getdigits(&eap->arg);
+    if (nr == 0 || *eap->arg != NUL)
+	emsg(_(e_invalid_argument));
+    else if (nr > SCRIPT_VERSION_MAX)
+	semsg(_(e_scriptversion_not_supported_nr), nr);
+    else
+    {
+	current_sctx.sc_version = nr;
+#ifdef FEAT_EVAL
+	SCRIPT_ITEM(current_sctx.sc_sid)->sn_version = nr;
+#endif
+    }
+}
+
+#if defined(FEAT_EVAL) || defined(PROTO)
+/*
+ * ":finish": Mark a sourced file as finished.
+ */
+    void
+ex_finish(exarg_T *eap)
+{
+    if (sourcing_a_script(eap))
+	do_finish(eap, FALSE);
+    else
+	emsg(_(e_finish_used_outside_of_sourced_file));
+}
+
+/*
+ * Mark a sourced file as finished.  Possibly makes the ":finish" pending.
+ * Also called for a pending finish at the ":endtry" or after returning from
+ * an extra do_cmdline().  "reanimate" is used in the latter case.
+ */
+    void
+do_finish(exarg_T *eap, int reanimate)
+{
+    int		idx;
+
+    if (reanimate)
+	((source_cookie_T *)getline_cookie(eap->ea_getline,
+					      eap->cookie))->finished = FALSE;
+
+    // Cleanup (and inactivate) conditionals, but stop when a try conditional
+    // not in its finally clause (which then is to be executed next) is found.
+    // In this case, make the ":finish" pending for execution at the ":endtry".
+    // Otherwise, finish normally.
+    idx = cleanup_conditionals(eap->cstack, 0, TRUE);
+    if (idx >= 0)
+    {
+	eap->cstack->cs_pending[idx] = CSTP_FINISH;
+	report_make_pending(CSTP_FINISH, NULL);
+    }
+    else
+	((source_cookie_T *)getline_cookie(eap->ea_getline,
+					       eap->cookie))->finished = TRUE;
+}
+
+
+/*
+ * Return TRUE when a sourced file had the ":finish" command: Don't give error
+ * message for missing ":endif".
+ * Return FALSE when not sourcing a file.
+ */
+    int
+source_finished(
+    char_u	*(*fgetline)(int, void *, int, getline_opt_T),
+    void	*cookie)
+{
+    return (getline_equal(fgetline, cookie, getsourceline)
+	    && ((source_cookie_T *)getline_cookie(
+						fgetline, cookie))->finished);
+}
+
+/*
+ * Find the path of a script below the "autoload" directory.
+ * Returns NULL if there is no "/autoload/" in the script name.
+ */
+    static char_u *
+script_name_after_autoload(scriptitem_T *si)
+{
+    char_u	*p = si->sn_name;
+    char_u	*res = NULL;
+
+    for (;;)
+    {
+	char_u *n = (char_u *)strstr((char *)p, "autoload");
+
+	if (n == NULL)
+	    break;
+	if (n > p && vim_ispathsep(n[-1]) && vim_ispathsep(n[8]))
+	    res = n + 9;
+	p = n + 8;
+    }
+    return res;
+}
+
+/*
+ * For an autoload script "autoload/dir/script.vim" return the prefix
+ * "dir#script#" in allocated memory.
+ * Returns NULL if anything is wrong.
+ */
+    char_u *
+get_autoload_prefix(scriptitem_T *si)
+{
+    char_u *p = script_name_after_autoload(si);
+    char_u *prefix;
+
+    if (p == NULL)
+	return NULL;
+    prefix = vim_strsave(p);
+    if (prefix == NULL)
+	return NULL;
+
+    // replace all '/' with '#' and locate ".vim" at the end
+    for (p = prefix; *p != NUL; p += mb_ptr2len(p))
+    {
+	if (vim_ispathsep(*p))
+	    *p = '#';
+	else if (STRCMP(p, ".vim") == 0)
+	{
+	    p[0] = '#';
+	    p[1] = NUL;
+	    return prefix;
+	}
+    }
+
+    // did not find ".vim" at the end
+    vim_free(prefix);
+    return NULL;
+}
+
+/*
+ * If in a Vim9 autoload script return "name" with the autoload prefix for the
+ * script.  If successful the returned name is allocated.
+ * Otherwise it returns "name" unmodified.
+ */
+    char_u *
+may_prefix_autoload(char_u *name)
+{
+    if (!SCRIPT_ID_VALID(current_sctx.sc_sid))
+	return name;
+
+    scriptitem_T *si = SCRIPT_ITEM(current_sctx.sc_sid);
+
+    if (si->sn_autoload_prefix == NULL)
+	return name;
+
+    char_u  *basename = name;
+    size_t  len;
+    char_u  *res;
+
+    if (*name == K_SPECIAL)
+    {
+	char_u *p = vim_strchr(name, '_');
+
+	// skip over "<SNR>99_"
+	if (p != NULL)
+	    basename = p + 1;
+    }
+
+    len = STRLEN(si->sn_autoload_prefix) + STRLEN(basename) + 2;
+    res = alloc(len);
+    if (res == NULL)
+	return NULL;
+
+    vim_snprintf((char *)res, len, "%s%s", si->sn_autoload_prefix, basename);
+    return res;
+}
+
+/*
+ * Return the autoload script name for a function or variable name.
+ * Returns NULL when out of memory.
+ * Caller must make sure that "name" contains AUTOLOAD_CHAR.
+ */
+    char_u *
+autoload_name(char_u *name)
+{
+    char_u	*p, *q = NULL;
+    char_u	*scriptname;
+
+    // Get the script file name: replace '#' with '/', append ".vim".
+    scriptname = alloc(STRLEN(name) + 14);
+    if (scriptname == NULL)
+	return NULL;
+    STRCPY(scriptname, "autoload/");
+    STRCAT(scriptname, name[0] == 'g' && name[1] == ':' ? name + 2: name);
+    for (p = scriptname + 9; (p = vim_strchr(p, AUTOLOAD_CHAR)) != NULL;
+								    q = p, ++p)
+	*p = '/';
+    STRCPY(q, ".vim");
+    return scriptname;
+}
+
+/*
+ * If "name" has a package name try autoloading the script for it.
+ * Return TRUE if a package was loaded.
+ */
+    int
+script_autoload(
+    char_u	*name,
+    int		reload)	    // load script again when already loaded
+{
+    char_u	*p;
+    char_u	*scriptname, *tofree;
+    int		ret = FALSE;
+    int		i;
+    int		ret_sid;
+
+    // If the name starts with "<SNR>123_" then "123" is the script ID.
+    if (name[0] == K_SPECIAL && name[1] == KS_EXTRA && name[2] == KE_SNR)
+    {
+	p = name + 3;
+	ret_sid = (int)getdigits(&p);
+	if (*p == '_' && SCRIPT_ID_VALID(ret_sid))
+	{
+	    may_load_script(ret_sid, &ret);
+	    return ret;
+	}
+    }
+
+    // If there is no '#' after name[0] there is no package name.
+    p = vim_strchr(name, AUTOLOAD_CHAR);
+    if (p == NULL || p == name)
+	return FALSE;
+
+    tofree = scriptname = autoload_name(name);
+    if (scriptname == NULL)
+	return FALSE;
+
+    // Find the name in the list of previously loaded package names.  Skip
+    // "autoload/", it's always the same.
+    for (i = 0; i < ga_loaded.ga_len; ++i)
+	if (STRCMP(((char_u **)ga_loaded.ga_data)[i] + 9, scriptname + 9) == 0)
+	    break;
+    if (!reload && i < ga_loaded.ga_len)
+	ret = FALSE;	    // was loaded already
+    else
+    {
+	// Remember the name if it wasn't loaded already.
+	if (i == ga_loaded.ga_len && ga_grow(&ga_loaded, 1) == OK)
+	{
+	    ((char_u **)ga_loaded.ga_data)[ga_loaded.ga_len++] = scriptname;
+	    tofree = NULL;
+	}
+
+	// Try loading the package from $VIMRUNTIME/autoload/<name>.vim
+	// Use "ret_sid" to avoid loading the same script again.
+	if (source_in_path(p_rtp, scriptname, DIP_START, &ret_sid) == OK)
+	    ret = TRUE;
+    }
+
+    vim_free(tofree);
+    return ret;
+}
+#endif