Adding upstream version 3.3a.upstream/3.3a

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

1 files changed, 844 insertions, 0 deletions

diff --git a/tty-term.c b/tty-term.c
new file mode 100644
index 0000000..fdf0c4f
--- /dev/null
+++ b/tty-term.c
@@ -0,0 +1,844 @@
+/* $OpenBSD$ */
+
+/*
+ * Copyright (c) 2008 Nicholas Marriott <nicholas.marriott@gmail.com>
+ *
+ * Permission to use, copy, modify, and distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+ * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF MIND, USE, DATA OR PROFITS, WHETHER
+ * IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING
+ * OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+ */
+
+#include <sys/types.h>
+
+#if defined(HAVE_CURSES_H)
+#include <curses.h>
+#elif defined(HAVE_NCURSES_H)
+#include <ncurses.h>
+#endif
+#include <fnmatch.h>
+#include <stdlib.h>
+#include <string.h>
+#include <term.h>
+
+#include "tmux.h"
+
+static char	*tty_term_strip(const char *);
+
+struct tty_terms tty_terms = LIST_HEAD_INITIALIZER(tty_terms);
+
+enum tty_code_type {
+	TTYCODE_NONE = 0,
+	TTYCODE_STRING,
+	TTYCODE_NUMBER,
+	TTYCODE_FLAG,
+};
+
+struct tty_code {
+	enum tty_code_type	type;
+	union {
+		char	       *string;
+		int		number;
+		int		flag;
+	} value;
+};
+
+struct tty_term_code_entry {
+	enum tty_code_type	type;
+	const char	       *name;
+};
+
+static const struct tty_term_code_entry tty_term_codes[] = {
+	[TTYC_ACSC] = { TTYCODE_STRING, "acsc" },
+	[TTYC_AM] = { TTYCODE_FLAG, "am" },
+	[TTYC_AX] = { TTYCODE_FLAG, "AX" },
+	[TTYC_BCE] = { TTYCODE_FLAG, "bce" },
+	[TTYC_BEL] = { TTYCODE_STRING, "bel" },
+	[TTYC_BIDI] = { TTYCODE_STRING, "Bidi" },
+	[TTYC_BLINK] = { TTYCODE_STRING, "blink" },
+	[TTYC_BOLD] = { TTYCODE_STRING, "bold" },
+	[TTYC_CIVIS] = { TTYCODE_STRING, "civis" },
+	[TTYC_CLEAR] = { TTYCODE_STRING, "clear" },
+	[TTYC_CLMG] = { TTYCODE_STRING, "Clmg" },
+	[TTYC_CMG] = { TTYCODE_STRING, "Cmg" },
+	[TTYC_CNORM] = { TTYCODE_STRING, "cnorm" },
+	[TTYC_COLORS] = { TTYCODE_NUMBER, "colors" },
+	[TTYC_CR] = { TTYCODE_STRING, "Cr" },
+	[TTYC_CSR] = { TTYCODE_STRING, "csr" },
+	[TTYC_CS] = { TTYCODE_STRING, "Cs" },
+	[TTYC_CUB1] = { TTYCODE_STRING, "cub1" },
+	[TTYC_CUB] = { TTYCODE_STRING, "cub" },
+	[TTYC_CUD1] = { TTYCODE_STRING, "cud1" },
+	[TTYC_CUD] = { TTYCODE_STRING, "cud" },
+	[TTYC_CUF1] = { TTYCODE_STRING, "cuf1" },
+	[TTYC_CUF] = { TTYCODE_STRING, "cuf" },
+	[TTYC_CUP] = { TTYCODE_STRING, "cup" },
+	[TTYC_CUU1] = { TTYCODE_STRING, "cuu1" },
+	[TTYC_CUU] = { TTYCODE_STRING, "cuu" },
+	[TTYC_CVVIS] = { TTYCODE_STRING, "cvvis" },
+	[TTYC_DCH1] = { TTYCODE_STRING, "dch1" },
+	[TTYC_DCH] = { TTYCODE_STRING, "dch" },
+	[TTYC_DIM] = { TTYCODE_STRING, "dim" },
+	[TTYC_DL1] = { TTYCODE_STRING, "dl1" },
+	[TTYC_DL] = { TTYCODE_STRING, "dl" },
+	[TTYC_DSEKS] = { TTYCODE_STRING, "Dseks" },
+	[TTYC_DSFCS] = { TTYCODE_STRING, "Dsfcs" },
+	[TTYC_DSBP] = { TTYCODE_STRING, "Dsbp" },
+	[TTYC_DSMG] = { TTYCODE_STRING, "Dsmg" },
+	[TTYC_E3] = { TTYCODE_STRING, "E3" },
+	[TTYC_ECH] = { TTYCODE_STRING, "ech" },
+	[TTYC_ED] = { TTYCODE_STRING, "ed" },
+	[TTYC_EL1] = { TTYCODE_STRING, "el1" },
+	[TTYC_EL] = { TTYCODE_STRING, "el" },
+	[TTYC_ENACS] = { TTYCODE_STRING, "enacs" },
+	[TTYC_ENBP] = { TTYCODE_STRING, "Enbp" },
+	[TTYC_ENEKS] = { TTYCODE_STRING, "Eneks" },
+	[TTYC_ENFCS] = { TTYCODE_STRING, "Enfcs" },
+	[TTYC_ENMG] = { TTYCODE_STRING, "Enmg" },
+	[TTYC_FSL] = { TTYCODE_STRING, "fsl" },
+	[TTYC_HOME] = { TTYCODE_STRING, "home" },
+	[TTYC_HPA] = { TTYCODE_STRING, "hpa" },
+	[TTYC_ICH1] = { TTYCODE_STRING, "ich1" },
+	[TTYC_ICH] = { TTYCODE_STRING, "ich" },
+	[TTYC_IL1] = { TTYCODE_STRING, "il1" },
+	[TTYC_IL] = { TTYCODE_STRING, "il" },
+	[TTYC_INDN] = { TTYCODE_STRING, "indn" },
+	[TTYC_INVIS] = { TTYCODE_STRING, "invis" },
+	[TTYC_KCBT] = { TTYCODE_STRING, "kcbt" },
+	[TTYC_KCUB1] = { TTYCODE_STRING, "kcub1" },
+	[TTYC_KCUD1] = { TTYCODE_STRING, "kcud1" },
+	[TTYC_KCUF1] = { TTYCODE_STRING, "kcuf1" },
+	[TTYC_KCUU1] = { TTYCODE_STRING, "kcuu1" },
+	[TTYC_KDC2] = { TTYCODE_STRING, "kDC" },
+	[TTYC_KDC3] = { TTYCODE_STRING, "kDC3" },
+	[TTYC_KDC4] = { TTYCODE_STRING, "kDC4" },
+	[TTYC_KDC5] = { TTYCODE_STRING, "kDC5" },
+	[TTYC_KDC6] = { TTYCODE_STRING, "kDC6" },
+	[TTYC_KDC7] = { TTYCODE_STRING, "kDC7" },
+	[TTYC_KDCH1] = { TTYCODE_STRING, "kdch1" },
+	[TTYC_KDN2] = { TTYCODE_STRING, "kDN" }, /* not kDN2 */
+	[TTYC_KDN3] = { TTYCODE_STRING, "kDN3" },
+	[TTYC_KDN4] = { TTYCODE_STRING, "kDN4" },
+	[TTYC_KDN5] = { TTYCODE_STRING, "kDN5" },
+	[TTYC_KDN6] = { TTYCODE_STRING, "kDN6" },
+	[TTYC_KDN7] = { TTYCODE_STRING, "kDN7" },
+	[TTYC_KEND2] = { TTYCODE_STRING, "kEND" },
+	[TTYC_KEND3] = { TTYCODE_STRING, "kEND3" },
+	[TTYC_KEND4] = { TTYCODE_STRING, "kEND4" },
+	[TTYC_KEND5] = { TTYCODE_STRING, "kEND5" },
+	[TTYC_KEND6] = { TTYCODE_STRING, "kEND6" },
+	[TTYC_KEND7] = { TTYCODE_STRING, "kEND7" },
+	[TTYC_KEND] = { TTYCODE_STRING, "kend" },
+	[TTYC_KF10] = { TTYCODE_STRING, "kf10" },
+	[TTYC_KF11] = { TTYCODE_STRING, "kf11" },
+	[TTYC_KF12] = { TTYCODE_STRING, "kf12" },
+	[TTYC_KF13] = { TTYCODE_STRING, "kf13" },
+	[TTYC_KF14] = { TTYCODE_STRING, "kf14" },
+	[TTYC_KF15] = { TTYCODE_STRING, "kf15" },
+	[TTYC_KF16] = { TTYCODE_STRING, "kf16" },
+	[TTYC_KF17] = { TTYCODE_STRING, "kf17" },
+	[TTYC_KF18] = { TTYCODE_STRING, "kf18" },
+	[TTYC_KF19] = { TTYCODE_STRING, "kf19" },
+	[TTYC_KF1] = { TTYCODE_STRING, "kf1" },
+	[TTYC_KF20] = { TTYCODE_STRING, "kf20" },
+	[TTYC_KF21] = { TTYCODE_STRING, "kf21" },
+	[TTYC_KF22] = { TTYCODE_STRING, "kf22" },
+	[TTYC_KF23] = { TTYCODE_STRING, "kf23" },
+	[TTYC_KF24] = { TTYCODE_STRING, "kf24" },
+	[TTYC_KF25] = { TTYCODE_STRING, "kf25" },
+	[TTYC_KF26] = { TTYCODE_STRING, "kf26" },
+	[TTYC_KF27] = { TTYCODE_STRING, "kf27" },
+	[TTYC_KF28] = { TTYCODE_STRING, "kf28" },
+	[TTYC_KF29] = { TTYCODE_STRING, "kf29" },
+	[TTYC_KF2] = { TTYCODE_STRING, "kf2" },
+	[TTYC_KF30] = { TTYCODE_STRING, "kf30" },
+	[TTYC_KF31] = { TTYCODE_STRING, "kf31" },
+	[TTYC_KF32] = { TTYCODE_STRING, "kf32" },
+	[TTYC_KF33] = { TTYCODE_STRING, "kf33" },
+	[TTYC_KF34] = { TTYCODE_STRING, "kf34" },
+	[TTYC_KF35] = { TTYCODE_STRING, "kf35" },
+	[TTYC_KF36] = { TTYCODE_STRING, "kf36" },
+	[TTYC_KF37] = { TTYCODE_STRING, "kf37" },
+	[TTYC_KF38] = { TTYCODE_STRING, "kf38" },
+	[TTYC_KF39] = { TTYCODE_STRING, "kf39" },
+	[TTYC_KF3] = { TTYCODE_STRING, "kf3" },
+	[TTYC_KF40] = { TTYCODE_STRING, "kf40" },
+	[TTYC_KF41] = { TTYCODE_STRING, "kf41" },
+	[TTYC_KF42] = { TTYCODE_STRING, "kf42" },
+	[TTYC_KF43] = { TTYCODE_STRING, "kf43" },
+	[TTYC_KF44] = { TTYCODE_STRING, "kf44" },
+	[TTYC_KF45] = { TTYCODE_STRING, "kf45" },
+	[TTYC_KF46] = { TTYCODE_STRING, "kf46" },
+	[TTYC_KF47] = { TTYCODE_STRING, "kf47" },
+	[TTYC_KF48] = { TTYCODE_STRING, "kf48" },
+	[TTYC_KF49] = { TTYCODE_STRING, "kf49" },
+	[TTYC_KF4] = { TTYCODE_STRING, "kf4" },
+	[TTYC_KF50] = { TTYCODE_STRING, "kf50" },
+	[TTYC_KF51] = { TTYCODE_STRING, "kf51" },
+	[TTYC_KF52] = { TTYCODE_STRING, "kf52" },
+	[TTYC_KF53] = { TTYCODE_STRING, "kf53" },
+	[TTYC_KF54] = { TTYCODE_STRING, "kf54" },
+	[TTYC_KF55] = { TTYCODE_STRING, "kf55" },
+	[TTYC_KF56] = { TTYCODE_STRING, "kf56" },
+	[TTYC_KF57] = { TTYCODE_STRING, "kf57" },
+	[TTYC_KF58] = { TTYCODE_STRING, "kf58" },
+	[TTYC_KF59] = { TTYCODE_STRING, "kf59" },
+	[TTYC_KF5] = { TTYCODE_STRING, "kf5" },
+	[TTYC_KF60] = { TTYCODE_STRING, "kf60" },
+	[TTYC_KF61] = { TTYCODE_STRING, "kf61" },
+	[TTYC_KF62] = { TTYCODE_STRING, "kf62" },
+	[TTYC_KF63] = { TTYCODE_STRING, "kf63" },
+	[TTYC_KF6] = { TTYCODE_STRING, "kf6" },
+	[TTYC_KF7] = { TTYCODE_STRING, "kf7" },
+	[TTYC_KF8] = { TTYCODE_STRING, "kf8" },
+	[TTYC_KF9] = { TTYCODE_STRING, "kf9" },
+	[TTYC_KHOM2] = { TTYCODE_STRING, "kHOM" },
+	[TTYC_KHOM3] = { TTYCODE_STRING, "kHOM3" },
+	[TTYC_KHOM4] = { TTYCODE_STRING, "kHOM4" },
+	[TTYC_KHOM5] = { TTYCODE_STRING, "kHOM5" },
+	[TTYC_KHOM6] = { TTYCODE_STRING, "kHOM6" },
+	[TTYC_KHOM7] = { TTYCODE_STRING, "kHOM7" },
+	[TTYC_KHOME] = { TTYCODE_STRING, "khome" },
+	[TTYC_KIC2] = { TTYCODE_STRING, "kIC" },
+	[TTYC_KIC3] = { TTYCODE_STRING, "kIC3" },
+	[TTYC_KIC4] = { TTYCODE_STRING, "kIC4" },
+	[TTYC_KIC5] = { TTYCODE_STRING, "kIC5" },
+	[TTYC_KIC6] = { TTYCODE_STRING, "kIC6" },
+	[TTYC_KIC7] = { TTYCODE_STRING, "kIC7" },
+	[TTYC_KICH1] = { TTYCODE_STRING, "kich1" },
+	[TTYC_KIND] = { TTYCODE_STRING, "kind" },
+	[TTYC_KLFT2] = { TTYCODE_STRING, "kLFT" },
+	[TTYC_KLFT3] = { TTYCODE_STRING, "kLFT3" },
+	[TTYC_KLFT4] = { TTYCODE_STRING, "kLFT4" },
+	[TTYC_KLFT5] = { TTYCODE_STRING, "kLFT5" },
+	[TTYC_KLFT6] = { TTYCODE_STRING, "kLFT6" },
+	[TTYC_KLFT7] = { TTYCODE_STRING, "kLFT7" },
+	[TTYC_KMOUS] = { TTYCODE_STRING, "kmous" },
+	[TTYC_KNP] = { TTYCODE_STRING, "knp" },
+	[TTYC_KNXT2] = { TTYCODE_STRING, "kNXT" },
+	[TTYC_KNXT3] = { TTYCODE_STRING, "kNXT3" },
+	[TTYC_KNXT4] = { TTYCODE_STRING, "kNXT4" },
+	[TTYC_KNXT5] = { TTYCODE_STRING, "kNXT5" },
+	[TTYC_KNXT6] = { TTYCODE_STRING, "kNXT6" },
+	[TTYC_KNXT7] = { TTYCODE_STRING, "kNXT7" },
+	[TTYC_KPP] = { TTYCODE_STRING, "kpp" },
+	[TTYC_KPRV2] = { TTYCODE_STRING, "kPRV" },
+	[TTYC_KPRV3] = { TTYCODE_STRING, "kPRV3" },
+	[TTYC_KPRV4] = { TTYCODE_STRING, "kPRV4" },
+	[TTYC_KPRV5] = { TTYCODE_STRING, "kPRV5" },
+	[TTYC_KPRV6] = { TTYCODE_STRING, "kPRV6" },
+	[TTYC_KPRV7] = { TTYCODE_STRING, "kPRV7" },
+	[TTYC_KRIT2] = { TTYCODE_STRING, "kRIT" },
+	[TTYC_KRIT3] = { TTYCODE_STRING, "kRIT3" },
+	[TTYC_KRIT4] = { TTYCODE_STRING, "kRIT4" },
+	[TTYC_KRIT5] = { TTYCODE_STRING, "kRIT5" },
+	[TTYC_KRIT6] = { TTYCODE_STRING, "kRIT6" },
+	[TTYC_KRIT7] = { TTYCODE_STRING, "kRIT7" },
+	[TTYC_KRI] = { TTYCODE_STRING, "kri" },
+	[TTYC_KUP2] = { TTYCODE_STRING, "kUP" }, /* not kUP2 */
+	[TTYC_KUP3] = { TTYCODE_STRING, "kUP3" },
+	[TTYC_KUP4] = { TTYCODE_STRING, "kUP4" },
+	[TTYC_KUP5] = { TTYCODE_STRING, "kUP5" },
+	[TTYC_KUP6] = { TTYCODE_STRING, "kUP6" },
+	[TTYC_KUP7] = { TTYCODE_STRING, "kUP7" },
+	[TTYC_MS] = { TTYCODE_STRING, "Ms" },
+	[TTYC_OL] = { TTYCODE_STRING, "ol" },
+	[TTYC_OP] = { TTYCODE_STRING, "op" },
+	[TTYC_RECT] = { TTYCODE_STRING, "Rect" },
+	[TTYC_REV] = { TTYCODE_STRING, "rev" },
+	[TTYC_RGB] = { TTYCODE_FLAG, "RGB" },
+	[TTYC_RIN] = { TTYCODE_STRING, "rin" },
+	[TTYC_RI] = { TTYCODE_STRING, "ri" },
+	[TTYC_RMACS] = { TTYCODE_STRING, "rmacs" },
+	[TTYC_RMCUP] = { TTYCODE_STRING, "rmcup" },
+	[TTYC_RMKX] = { TTYCODE_STRING, "rmkx" },
+	[TTYC_SETAB] = { TTYCODE_STRING, "setab" },
+	[TTYC_SETAF] = { TTYCODE_STRING, "setaf" },
+	[TTYC_SETAL] = { TTYCODE_STRING, "setal" },
+	[TTYC_SETRGBB] = { TTYCODE_STRING, "setrgbb" },
+	[TTYC_SETRGBF] = { TTYCODE_STRING, "setrgbf" },
+	[TTYC_SETULC] = { TTYCODE_STRING, "Setulc" },
+	[TTYC_SE] = { TTYCODE_STRING, "Se" },
+	[TTYC_SGR0] = { TTYCODE_STRING, "sgr0" },
+	[TTYC_SITM] = { TTYCODE_STRING, "sitm" },
+	[TTYC_SMACS] = { TTYCODE_STRING, "smacs" },
+	[TTYC_SMCUP] = { TTYCODE_STRING, "smcup" },
+	[TTYC_SMKX] = { TTYCODE_STRING, "smkx" },
+	[TTYC_SMOL] = { TTYCODE_STRING, "Smol" },
+	[TTYC_SMSO] = { TTYCODE_STRING, "smso" },
+	[TTYC_SMULX] = { TTYCODE_STRING, "Smulx" },
+	[TTYC_SMUL] = { TTYCODE_STRING, "smul" },
+	[TTYC_SMXX] =  { TTYCODE_STRING, "smxx" },
+	[TTYC_SS] = { TTYCODE_STRING, "Ss" },
+	[TTYC_SWD] = { TTYCODE_STRING, "Swd" },
+	[TTYC_SYNC] = { TTYCODE_STRING, "Sync" },
+	[TTYC_TC] = { TTYCODE_FLAG, "Tc" },
+	[TTYC_TSL] = { TTYCODE_STRING, "tsl" },
+	[TTYC_U8] = { TTYCODE_NUMBER, "U8" },
+	[TTYC_VPA] = { TTYCODE_STRING, "vpa" },
+	[TTYC_XT] = { TTYCODE_FLAG, "XT" }
+};
+
+u_int
+tty_term_ncodes(void)
+{
+	return (nitems(tty_term_codes));
+}
+
+static char *
+tty_term_strip(const char *s)
+{
+	const char     *ptr;
+	static char	buf[8192];
+	size_t		len;
+
+	/* Ignore strings with no padding. */
+	if (strchr(s, '$') == NULL)
+		return (xstrdup(s));
+
+	len = 0;
+	for (ptr = s; *ptr != '\0'; ptr++) {
+		if (*ptr == '$' && *(ptr + 1) == '<') {
+			while (*ptr != '\0' && *ptr != '>')
+				ptr++;
+			if (*ptr == '>')
+				ptr++;
+			if (*ptr == '\0')
+				break;
+		}
+
+		buf[len++] = *ptr;
+		if (len == (sizeof buf) - 1)
+			break;
+	}
+	buf[len] = '\0';
+
+	return (xstrdup(buf));
+}
+
+static char *
+tty_term_override_next(const char *s, size_t *offset)
+{
+	static char	value[8192];
+	size_t		n = 0, at = *offset;
+
+	if (s[at] == '\0')
+		return (NULL);
+
+	while (s[at] != '\0') {
+		if (s[at] == ':') {
+			if (s[at + 1] == ':') {
+				value[n++] = ':';
+				at += 2;
+			} else
+				break;
+		} else {
+			value[n++] = s[at];
+			at++;
+		}
+		if (n == (sizeof value) - 1)
+			return (NULL);
+	}
+	if (s[at] != '\0')
+		*offset = at + 1;
+	else
+		*offset = at;
+	value[n] = '\0';
+	return (value);
+}
+
+void
+tty_term_apply(struct tty_term *term, const char *capabilities, int quiet)
+{
+	const struct tty_term_code_entry	*ent;
+	struct tty_code				*code;
+	size_t                                   offset = 0;
+	char					*cp, *value, *s;
+	const char				*errstr, *name = term->name;
+	u_int					 i;
+	int					 n, remove;
+
+	while ((s = tty_term_override_next(capabilities, &offset)) != NULL) {
+		if (*s == '\0')
+			continue;
+		value = NULL;
+
+		remove = 0;
+		if ((cp = strchr(s, '=')) != NULL) {
+			*cp++ = '\0';
+			value = xstrdup(cp);
+			if (strunvis(value, cp) == -1) {
+				free(value);
+				value = xstrdup(cp);
+			}
+		} else if (s[strlen(s) - 1] == '@') {
+			s[strlen(s) - 1] = '\0';
+			remove = 1;
+		} else
+			value = xstrdup("");
+
+		if (!quiet) {
+			if (remove)
+				log_debug("%s override: %s@", name, s);
+			else if (*value == '\0')
+				log_debug("%s override: %s", name, s);
+			else
+				log_debug("%s override: %s=%s", name, s, value);
+		}
+
+		for (i = 0; i < tty_term_ncodes(); i++) {
+			ent = &tty_term_codes[i];
+			if (strcmp(s, ent->name) != 0)
+				continue;
+			code = &term->codes[i];
+
+			if (remove) {
+				code->type = TTYCODE_NONE;
+				continue;
+			}
+			switch (ent->type) {
+			case TTYCODE_NONE:
+				break;
+			case TTYCODE_STRING:
+				if (code->type == TTYCODE_STRING)
+					free(code->value.string);
+				code->value.string = xstrdup(value);
+				code->type = ent->type;
+				break;
+			case TTYCODE_NUMBER:
+				n = strtonum(value, 0, INT_MAX, &errstr);
+				if (errstr != NULL)
+					break;
+				code->value.number = n;
+				code->type = ent->type;
+				break;
+			case TTYCODE_FLAG:
+				code->value.flag = 1;
+				code->type = ent->type;
+				break;
+			}
+		}
+
+		free(value);
+	}
+}
+
+void
+tty_term_apply_overrides(struct tty_term *term)
+{
+	struct options_entry		*o;
+	struct options_array_item	*a;
+	union options_value		*ov;
+	const char			*s, *acs;
+	size_t				 offset;
+	char				*first;
+
+	/* Update capabilities from the option. */
+	o = options_get_only(global_options, "terminal-overrides");
+	a = options_array_first(o);
+	while (a != NULL) {
+		ov = options_array_item_value(a);
+		s = ov->string;
+
+		offset = 0;
+		first = tty_term_override_next(s, &offset);
+		if (first != NULL && fnmatch(first, term->name, 0) == 0)
+			tty_term_apply(term, s + offset, 0);
+		a = options_array_next(a);
+	}
+
+	/* Update the RGB flag if the terminal has RGB colours. */
+	if (tty_term_has(term, TTYC_SETRGBF) &&
+	    tty_term_has(term, TTYC_SETRGBB))
+		term->flags |= TERM_RGBCOLOURS;
+	else
+		term->flags &= ~TERM_RGBCOLOURS;
+	log_debug("RGBCOLOURS flag is %d", !!(term->flags & TERM_RGBCOLOURS));
+
+	/*
+	 * Set or clear the DECSLRM flag if the terminal has the margin
+	 * capabilities.
+	 */
+	if (tty_term_has(term, TTYC_CMG) && tty_term_has(term, TTYC_CLMG))
+		term->flags |= TERM_DECSLRM;
+	else
+		term->flags &= ~TERM_DECSLRM;
+	log_debug("DECSLRM flag is %d", !!(term->flags & TERM_DECSLRM));
+
+	/*
+	 * Set or clear the DECFRA flag if the terminal has the rectangle
+	 * capability.
+	 */
+	if (tty_term_has(term, TTYC_RECT))
+		term->flags |= TERM_DECFRA;
+	else
+		term->flags &= ~TERM_DECFRA;
+	log_debug("DECFRA flag is %d", !!(term->flags & TERM_DECFRA));
+
+	/*
+	 * Terminals without am (auto right margin) wrap at at $COLUMNS - 1
+	 * rather than $COLUMNS (the cursor can never be beyond $COLUMNS - 1).
+	 *
+	 * Terminals without xenl (eat newline glitch) ignore a newline beyond
+	 * the right edge of the terminal, but tmux doesn't care about this -
+	 * it always uses absolute only moves the cursor with a newline when
+	 * also sending a linefeed.
+	 *
+	 * This is irritating, most notably because it is painful to write to
+	 * the very bottom-right of the screen without scrolling.
+	 *
+	 * Flag the terminal here and apply some workarounds in other places to
+	 * do the best possible.
+	 */
+	if (!tty_term_flag(term, TTYC_AM))
+		term->flags |= TERM_NOAM;
+	else
+		term->flags &= ~TERM_NOAM;
+	log_debug("NOAM flag is %d", !!(term->flags & TERM_NOAM));
+
+	/* Generate ACS table. If none is present, use nearest ASCII. */
+	memset(term->acs, 0, sizeof term->acs);
+	if (tty_term_has(term, TTYC_ACSC))
+		acs = tty_term_string(term, TTYC_ACSC);
+	else
+		acs = "a#j+k+l+m+n+o-p-q-r-s-t+u+v+w+x|y<z>~.";
+	for (; acs[0] != '\0' && acs[1] != '\0'; acs += 2)
+		term->acs[(u_char) acs[0]][0] = acs[1];
+}
+
+struct tty_term *
+tty_term_create(struct tty *tty, char *name, char **caps, u_int ncaps,
+    int *feat, char **cause)
+{
+	struct tty_term				*term;
+	const struct tty_term_code_entry	*ent;
+	struct tty_code				*code;
+	struct options_entry			*o;
+	struct options_array_item		*a;
+	union options_value			*ov;
+	u_int					 i, j;
+	const char				*s, *value;
+	size_t					 offset, namelen;
+	char					*first;
+
+	log_debug("adding term %s", name);
+
+	term = xcalloc(1, sizeof *term);
+	term->tty = tty;
+	term->name = xstrdup(name);
+	term->codes = xcalloc(tty_term_ncodes(), sizeof *term->codes);
+	LIST_INSERT_HEAD(&tty_terms, term, entry);
+
+	/* Fill in codes. */
+	for (i = 0; i < ncaps; i++) {
+		namelen = strcspn(caps[i], "=");
+		if (namelen == 0)
+			continue;
+		value = caps[i] + namelen + 1;
+
+		for (j = 0; j < tty_term_ncodes(); j++) {
+			ent = &tty_term_codes[j];
+			if (strncmp(ent->name, caps[i], namelen) != 0)
+				continue;
+			if (ent->name[namelen] != '\0')
+				continue;
+
+			code = &term->codes[j];
+			code->type = TTYCODE_NONE;
+			switch (ent->type) {
+			case TTYCODE_NONE:
+				break;
+			case TTYCODE_STRING:
+				code->type = TTYCODE_STRING;
+				code->value.string = tty_term_strip(value);
+				break;
+			case TTYCODE_NUMBER:
+				code->type = TTYCODE_NUMBER;
+				code->value.number = atoi(value);
+				break;
+			case TTYCODE_FLAG:
+				code->type = TTYCODE_FLAG;
+				code->value.flag = (*value == '1');
+				break;
+			}
+		}
+	}
+
+	/* Apply terminal features. */
+	o = options_get_only(global_options, "terminal-features");
+	a = options_array_first(o);
+	while (a != NULL) {
+		ov = options_array_item_value(a);
+		s = ov->string;
+
+		offset = 0;
+		first = tty_term_override_next(s, &offset);
+		if (first != NULL && fnmatch(first, term->name, 0) == 0)
+			tty_add_features(feat, s + offset, ":");
+		a = options_array_next(a);
+	}
+
+	/* Delete curses data. */
+#if !defined(NCURSES_VERSION_MAJOR) || NCURSES_VERSION_MAJOR > 5 || \
+    (NCURSES_VERSION_MAJOR == 5 && NCURSES_VERSION_MINOR > 6)
+	del_curterm(cur_term);
+#endif
+
+	/* Apply overrides so any capabilities used for features are changed. */
+	tty_term_apply_overrides(term);
+
+	/* These are always required. */
+	if (!tty_term_has(term, TTYC_CLEAR)) {
+		xasprintf(cause, "terminal does not support clear");
+		goto error;
+	}
+	if (!tty_term_has(term, TTYC_CUP)) {
+		xasprintf(cause, "terminal does not support cup");
+		goto error;
+	}
+
+	/*
+	 * If TERM has XT or clear starts with CSI then it is safe to assume
+	 * the terminal is derived from the VT100. This controls whether device
+	 * attributes requests are sent to get more information.
+	 *
+	 * This is a bit of a hack but there aren't that many alternatives.
+	 * Worst case tmux will just fall back to using whatever terminfo(5)
+	 * says without trying to correct anything that is missing.
+	 *
+	 * Also add few features that VT100-like terminals should either
+	 * support or safely ignore.
+	 */
+	s = tty_term_string(term, TTYC_CLEAR);
+	if (tty_term_flag(term, TTYC_XT) || strncmp(s, "\033[", 2) == 0) {
+		term->flags |= TERM_VT100LIKE;
+		tty_add_features(feat, "bpaste,focus,title", ",");
+	}
+
+	/* Add RGB feature if terminal has RGB colours. */
+	if ((tty_term_flag(term, TTYC_TC) || tty_term_has(term, TTYC_RGB)) &&
+	    (!tty_term_has(term, TTYC_SETRGBF) ||
+	    !tty_term_has(term, TTYC_SETRGBB)))
+		tty_add_features(feat, "RGB", ",");
+
+	/* Apply the features and overrides again. */
+	if (tty_apply_features(term, *feat))
+		tty_term_apply_overrides(term);
+
+	/* Log the capabilities. */
+	for (i = 0; i < tty_term_ncodes(); i++)
+		log_debug("%s%s", name, tty_term_describe(term, i));
+
+	return (term);
+
+error:
+	tty_term_free(term);
+	return (NULL);
+}
+
+void
+tty_term_free(struct tty_term *term)
+{
+	u_int	i;
+
+	log_debug("removing term %s", term->name);
+
+	for (i = 0; i < tty_term_ncodes(); i++) {
+		if (term->codes[i].type == TTYCODE_STRING)
+			free(term->codes[i].value.string);
+	}
+	free(term->codes);
+
+	LIST_REMOVE(term, entry);
+	free(term->name);
+	free(term);
+}
+
+int
+tty_term_read_list(const char *name, int fd, char ***caps, u_int *ncaps,
+    char **cause)
+{
+	const struct tty_term_code_entry	*ent;
+	int					 error, n;
+	u_int					 i;
+	const char				*s;
+	char					 tmp[11];
+
+	if (setupterm((char *)name, fd, &error) != OK) {
+		switch (error) {
+		case 1:
+			xasprintf(cause, "can't use hardcopy terminal: %s",
+			    name);
+			break;
+		case 0:
+			xasprintf(cause, "missing or unsuitable terminal: %s",
+			    name);
+			break;
+		case -1:
+			xasprintf(cause, "can't find terminfo database");
+			break;
+		default:
+			xasprintf(cause, "unknown error");
+			break;
+		}
+		return (-1);
+	}
+
+	*ncaps = 0;
+	*caps = NULL;
+
+	for (i = 0; i < tty_term_ncodes(); i++) {
+		ent = &tty_term_codes[i];
+		switch (ent->type) {
+		case TTYCODE_NONE:
+			continue;
+		case TTYCODE_STRING:
+			s = tigetstr((char *)ent->name);
+			if (s == NULL || s == (char *)-1)
+				continue;
+			break;
+		case TTYCODE_NUMBER:
+			n = tigetnum((char *)ent->name);
+			if (n == -1 || n == -2)
+				continue;
+			xsnprintf(tmp, sizeof tmp, "%d", n);
+			s = tmp;
+			break;
+		case TTYCODE_FLAG:
+			n = tigetflag((char *) ent->name);
+			if (n == -1)
+				continue;
+			if (n)
+				s = "1";
+			else
+				s = "0";
+			break;
+		}
+		*caps = xreallocarray(*caps, (*ncaps) + 1, sizeof **caps);
+		xasprintf(&(*caps)[*ncaps], "%s=%s", ent->name, s);
+		(*ncaps)++;
+	}
+
+#if !defined(NCURSES_VERSION_MAJOR) || NCURSES_VERSION_MAJOR > 5 || \
+    (NCURSES_VERSION_MAJOR == 5 && NCURSES_VERSION_MINOR > 6)
+	del_curterm(cur_term);
+#endif
+	return (0);
+}
+
+void
+tty_term_free_list(char **caps, u_int ncaps)
+{
+	u_int	i;
+
+	for (i = 0; i < ncaps; i++)
+		free(caps[i]);
+	free(caps);
+}
+
+int
+tty_term_has(struct tty_term *term, enum tty_code_code code)
+{
+	return (term->codes[code].type != TTYCODE_NONE);
+}
+
+const char *
+tty_term_string(struct tty_term *term, enum tty_code_code code)
+{
+	if (!tty_term_has(term, code))
+		return ("");
+	if (term->codes[code].type != TTYCODE_STRING)
+		fatalx("not a string: %d", code);
+	return (term->codes[code].value.string);
+}
+
+const char *
+tty_term_string1(struct tty_term *term, enum tty_code_code code, int a)
+{
+	return (tparm((char *) tty_term_string(term, code), a, 0, 0, 0, 0, 0, 0, 0, 0));
+}
+
+const char *
+tty_term_string2(struct tty_term *term, enum tty_code_code code, int a, int b)
+{
+	return (tparm((char *) tty_term_string(term, code), a, b, 0, 0, 0, 0, 0, 0, 0));
+}
+
+const char *
+tty_term_string3(struct tty_term *term, enum tty_code_code code, int a, int b,
+    int c)
+{
+	return (tparm((char *) tty_term_string(term, code), a, b, c, 0, 0, 0, 0, 0, 0));
+}
+
+const char *
+tty_term_ptr1(struct tty_term *term, enum tty_code_code code, const void *a)
+{
+	return (tparm((char *) tty_term_string(term, code), (long)a, 0, 0, 0, 0, 0, 0, 0, 0));
+}
+
+const char *
+tty_term_ptr2(struct tty_term *term, enum tty_code_code code, const void *a,
+    const void *b)
+{
+	return (tparm((char *) tty_term_string(term, code), (long)a, (long)b, 0, 0, 0, 0, 0, 0, 0));
+}
+
+int
+tty_term_number(struct tty_term *term, enum tty_code_code code)
+{
+	if (!tty_term_has(term, code))
+		return (0);
+	if (term->codes[code].type != TTYCODE_NUMBER)
+		fatalx("not a number: %d", code);
+	return (term->codes[code].value.number);
+}
+
+int
+tty_term_flag(struct tty_term *term, enum tty_code_code code)
+{
+	if (!tty_term_has(term, code))
+		return (0);
+	if (term->codes[code].type != TTYCODE_FLAG)
+		fatalx("not a flag: %d", code);
+	return (term->codes[code].value.flag);
+}
+
+const char *
+tty_term_describe(struct tty_term *term, enum tty_code_code code)
+{
+	static char	 s[256];
+	char		 out[128];
+
+	switch (term->codes[code].type) {
+	case TTYCODE_NONE:
+		xsnprintf(s, sizeof s, "%4u: %s: [missing]",
+		    code, tty_term_codes[code].name);
+		break;
+	case TTYCODE_STRING:
+		strnvis(out, term->codes[code].value.string, sizeof out,
+		    VIS_OCTAL|VIS_CSTYLE|VIS_TAB|VIS_NL);
+		xsnprintf(s, sizeof s, "%4u: %s: (string) %s",
+		    code, tty_term_codes[code].name,
+		    out);
+		break;
+	case TTYCODE_NUMBER:
+		xsnprintf(s, sizeof s, "%4u: %s: (number) %d",
+		    code, tty_term_codes[code].name,
+		    term->codes[code].value.number);
+		break;
+	case TTYCODE_FLAG:
+		xsnprintf(s, sizeof s, "%4u: %s: (flag) %s",
+		    code, tty_term_codes[code].name,
+		    term->codes[code].value.flag ? "true" : "false");
+		break;
+	}
+	return (s);
+}