Make it so that if a window or session target is prefixed with an =,

only an exact name or index match is accepted, no special character,
prefix match, or fnmatch.

cmd-find.c

@@ -30,6 +30,8 @@
 #define CMD_FIND_QUIET 0x2
 #define CMD_FIND_WINDOW_INDEX 0x4
 #define CMD_FIND_DEFAULT_MARKED 0x8
+#define CMD_FIND_EXACT_SESSION 0x10
+#define CMD_FIND_EXACT_WINDOW 0x20
 
 enum cmd_find_type {
 	CMD_FIND_PANE,
@@ -381,6 +383,10 @@ cmd_find_get_session(struct cmd_find_state *fs, const char *session)
 	if (fs->s != NULL)
 		return (0);
 
+	/* Stop now if exact only. */
+	if (fs->flags & CMD_FIND_EXACT_SESSION)
+		return (-1);
+
 	/* Otherwise look for prefix. */
 	s = NULL;
 	RB_FOREACH(s_loop, sessions, &sessions) {
@@ -455,10 +461,11 @@ cmd_find_get_window_with_session(struct cmd_find_state *fs, const char *window)
 {
 	struct winlink	*wl;
 	const char	*errstr;
-	int		 idx, n;
+	int		 idx, n, exact;
 	struct session	*s;
 
 	log_debug("%s: %s", __func__, window);
+	exact = (fs->flags & CMD_FIND_EXACT_WINDOW);
 
 	/* Check for window ids starting with @. */
 	if (*window == '@') {
@@ -469,7 +476,7 @@ cmd_find_get_window_with_session(struct cmd_find_state *fs, const char *window)
 	}
 
 	/* Try as an offset. */
-	if (window[0] == '+' || window[0] == '-') {
+	if (!exact && window[0] == '+' || window[0] == '-') {
 		if (window[1] != '\0')
 			n = strtonum(window + 1, 1, INT_MAX, NULL);
 		else
@@ -499,6 +506,7 @@ cmd_find_get_window_with_session(struct cmd_find_state *fs, const char *window)
 	}
 
 	/* Try special characters. */
+	if (!exact) {
 		if (strcmp(window, "!") == 0) {
 			fs->wl = TAILQ_FIRST(&fs->s->lastw);
 			if (fs->wl == NULL)
@@ -521,8 +529,10 @@ cmd_find_get_window_with_session(struct cmd_find_state *fs, const char *window)
 			fs->w = fs->wl->window;
 			return (0);
 		}
+	}
 
 	/* First see if this is a valid window index in this session. */
+	if (window[0] != '+' && window[0] != '-') {
 		idx = strtonum(window, 0, INT_MAX, &errstr);
 		if (errstr == NULL) {
 			if (fs->flags & CMD_FIND_WINDOW_INDEX) {
@@ -535,6 +545,7 @@ cmd_find_get_window_with_session(struct cmd_find_state *fs, const char *window)
 				return (0);
 			}
 		}
+	}
 
 	/* Look for exact matches, error if more than one. */
 	fs->wl = NULL;
@@ -551,6 +562,11 @@ cmd_find_get_window_with_session(struct cmd_find_state *fs, const char *window)
 		return (0);
 	}
 
+
+	/* Stop now if exact only. */
+	if (exact)
+		return (-1);
+
 	/* Try as the start of a window name, error if multiple. */
 	fs->wl = NULL;
 	RB_FOREACH(wl, winlinks, &fs->s->windows) {
@@ -868,6 +884,16 @@ cmd_find_target(struct cmd_q *cmdq, const char *target, enum cmd_find_type type,
 		}
 	}
 
+	/* Set exact match flags. */
+	if (session != NULL && *session == '=') {
+		session++;
+		fs.flags |= CMD_FIND_EXACT_SESSION;
+	}
+	if (window != NULL && *window == '=') {
+		window++;
+		fs.flags |= CMD_FIND_EXACT_WINDOW;
+	}
+
 	/* Empty is the same as NULL. */
 	if (session != NULL && *session == '\0')
 		session = NULL;

key-bindings.c

@@ -161,16 +161,16 @@ key_bindings_init(void)
 		"bind , command-prompt -I'#W' \"rename-window '%%'\"",
 		"bind - delete-buffer",
 		"bind . command-prompt \"move-window -t '%%'\"",
-		"bind 0 select-window -t:0",
+		"bind 0 select-window -t:=0",
-		"bind 1 select-window -t:1",
+		"bind 1 select-window -t:=1",
-		"bind 2 select-window -t:2",
+		"bind 2 select-window -t:=2",
-		"bind 3 select-window -t:3",
+		"bind 3 select-window -t:=3",
-		"bind 4 select-window -t:4",
+		"bind 4 select-window -t:=4",
-		"bind 5 select-window -t:5",
+		"bind 5 select-window -t:=5",
-		"bind 6 select-window -t:6",
+		"bind 6 select-window -t:=6",
-		"bind 7 select-window -t:7",
+		"bind 7 select-window -t:=7",
-		"bind 8 select-window -t:8",
+		"bind 8 select-window -t:=8",
-		"bind 9 select-window -t:9",
+		"bind 9 select-window -t:=9",
 		"bind : command-prompt",
 		"bind \\; last-pane",
 		"bind = choose-buffer",

tmux.1

@@ -404,6 +404,14 @@ An
 pattern which is matched against the session name.
 .El
 .Pp
+If the session name is prefixed with a
+.Ql = : ,
+only an exact match is accepted (so
+.Ql =mysess
+will only match exactly
+.Ql mysess ,
+not
+.Ql mysession ) .
 If a single session is found, it is used as the target session; multiple matches
 produce an error.
 If a session is omitted, the current session is used if available; if no
@@ -440,6 +448,9 @@ As an
 pattern matched against the window name.
 .El
 .Pp
+Like sessions, a
+.Ql =
+prefix will do an exact match only.
 An empty window name specifies the next unused index if appropriate (for
 example the
 .Ic new-window