Add user options, prefixed with @. May be set to any arbitrary string.

cmd-set-option.c

@@ -29,6 +29,9 @@
 
 enum cmd_retval	cmd_set_option_exec(struct cmd *, struct cmd_ctx *);
 
+enum cmd_retval	cmd_set_option_user(struct cmd *, struct cmd_ctx *,
+		    const char *, const char *);
+
 int	cmd_set_option_unset(struct cmd *, struct cmd_ctx *,
 	    const struct options_table_entry *, struct options *,
 	    const char *);
@@ -102,6 +105,10 @@ cmd_set_option_exec(struct cmd *self, struct cmd_ctx *ctx)
 	else
 		valstr = args->argv[1];
 
+	/* Is this a user option? */
+	if (*optstr == '@')
+		return (cmd_set_option_user(self, ctx, optstr, valstr));
+
 	/* Find the option entry, try each table. */
 	table = oe = NULL;
 	if (options_table_find(optstr, &table, &oe) != 0) {
@@ -171,6 +178,63 @@ cmd_set_option_exec(struct cmd *self, struct cmd_ctx *ctx)
 	return (CMD_RETURN_NORMAL);
 }
 
+/* Set user option. */
+enum cmd_retval
+cmd_set_option_user(struct cmd *self, struct cmd_ctx *ctx, const char* optstr,
+    const char *valstr)
+{
+	struct args	*args = self->args;
+	struct session	*s;
+	struct winlink	*wl;
+	struct options	*oo;
+
+	if (args_has(args, 's'))
+		oo = &global_options;
+	else if (args_has(self->args, 'w') ||
+	    self->entry == &cmd_set_window_option_entry) {
+		if (args_has(self->args, 'g'))
+			oo = &global_w_options;
+		else {
+			wl = cmd_find_window(ctx, args_get(args, 't'), NULL);
+			if (wl == NULL)
+				return (CMD_RETURN_ERROR);
+			oo = &wl->window->options;
+		}
+	} else {
+		if (args_has(self->args, 'g'))
+			oo = &global_s_options;
+		else {
+			s = cmd_find_session(ctx, args_get(args, 't'), 0);
+			if (s == NULL)
+				return (CMD_RETURN_ERROR);
+			oo = &s->options;
+		}
+	}
+
+	if (args_has(args, 'u')) {
+		if (options_find1(oo, optstr) == NULL) {
+			ctx->error(ctx, "unknown option: %s", optstr);
+			return (CMD_RETURN_ERROR);
+		}
+		if (valstr != NULL) {
+			ctx->error(ctx, "value passed to unset option: %s",
+			    optstr);
+			return (CMD_RETURN_ERROR);
+		}
+		options_remove(oo, optstr);
+	} else {
+		if (valstr == NULL) {
+			ctx->error(ctx, "empty value");
+			return (CMD_RETURN_ERROR);
+		}
+		options_set_string(oo, optstr, "%s", valstr);
+		if (!args_has(args, 'q'))
+			ctx->info(ctx, "set option: %s -> %s", optstr, valstr);
+	}
+	return (CMD_RETURN_NORMAL);
+}
+
+
 /* Unset an option. */
 int
 cmd_set_option_unset(struct cmd *self, struct cmd_ctx *ctx,

cmd-show-options.c

@@ -29,6 +29,11 @@
 
 enum cmd_retval	 cmd_show_options_exec(struct cmd *, struct cmd_ctx *);
 
+enum cmd_retval	cmd_show_options_one(struct cmd *, struct cmd_ctx *,
+		    struct options *);
+enum cmd_retval cmd_show_options_all(struct cmd *, struct cmd_ctx *,
+		    const struct options_table_entry *, struct options *);
+
 const struct cmd_entry cmd_show_options_entry = {
 	"show-options", "show",
 	"gst:vw", 0, 1,
@@ -53,12 +58,10 @@ enum cmd_retval
 cmd_show_options_exec(struct cmd *self, struct cmd_ctx *ctx)
 {
 	struct args				*args = self->args;
-	const struct options_table_entry	*table, *oe;
 	struct session				*s;
 	struct winlink				*wl;
+	const struct options_table_entry	*table;
 	struct options				*oo;
-	struct options_entry			*o;
-	const char				*optval;
 
 	if (args_has(self->args, 's')) {
 		oo = &global_options;
@@ -86,7 +89,33 @@ cmd_show_options_exec(struct cmd *self, struct cmd_ctx *ctx)
 		}
 	}
 
-	if (args->argc != 0) {
+	if (args->argc != 0)
+		return (cmd_show_options_one(self, ctx, oo));
+	else
+		return (cmd_show_options_all(self, ctx, table, oo));
+}
+
+enum cmd_retval
+cmd_show_options_one(struct cmd *self, struct cmd_ctx *ctx,
+    struct options *oo)
+{
+	struct args				*args = self->args;
+	const struct options_table_entry	*table, *oe;
+	struct options_entry			*o;
+	const char				*optval;
+
+	if (*args->argv[0] == '@') {
+		if ((o = options_find1(oo, args->argv[0])) == NULL) {
+			ctx->error(ctx, "unknown option: %s", args->argv[0]);
+			return (CMD_RETURN_ERROR);
+		}
+		if (args_has(self->args, 'v'))
+			ctx->print(ctx, "%s", o->str);
+		else
+			ctx->print(ctx, "%s \"%s\"", o->name, o->str);
+		return (CMD_RETURN_NORMAL);
+	}
+
 	table = oe = NULL;
 	if (options_table_find(args->argv[0], &table, &oe) != 0) {
 		ctx->error(ctx, "ambiguous option: %s", args->argv[0]);
@@ -98,13 +127,31 @@ cmd_show_options_exec(struct cmd *self, struct cmd_ctx *ctx)
 	}
 	if ((o = options_find1(oo, oe->name)) == NULL)
 		return (CMD_RETURN_NORMAL);
-		optval = options_table_print_entry(oe, o,
-		    args_has(self->args, 'v'));
+	optval = options_table_print_entry(oe, o, args_has(self->args, 'v'));
 	if (args_has(self->args, 'v'))
 		ctx->print(ctx, "%s", optval);
 	else
 		ctx->print(ctx, "%s %s", oe->name, optval);
-	} else {
+	return (CMD_RETURN_NORMAL);
+}
+
+enum cmd_retval
+cmd_show_options_all(struct cmd *self, struct cmd_ctx *ctx,
+    const struct options_table_entry *table, struct options *oo)
+{
+	const struct options_table_entry	*oe;
+	struct options_entry			*o;
+	const char				*optval;
+
+	RB_FOREACH(o, options_tree, &oo->tree) {
+		if (*o->name == '@') {
+			if (args_has(self->args, 'v'))
+				ctx->print(ctx, "%s", o->str);
+			else
+				ctx->print(ctx, "%s \"%s\"", o->name, o->str);
+		}
+	}
+
 	for (oe = table; oe->name != NULL; oe++) {
 		if ((o = options_find1(oo, oe->name)) == NULL)
 			continue;
@@ -115,7 +162,6 @@ cmd_show_options_exec(struct cmd *self, struct cmd_ctx *ctx)
 		else
 			ctx->print(ctx, "%s %s", oe->name, optval);
 	}
-	}
 
 	return (CMD_RETURN_NORMAL);
 }

tmux.1

@@ -1943,6 +1943,19 @@ All window options are documented with the
 .Ic set-window-option
 command.
 .Pp
+.Nm
+also supports user options which are prefixed with a
+.Ql \&@ .
+User options may have any name, so long as it is prefixed with
+.Ql \&@,
+and be set to any string.
+For example
+.Bd -literal -offset indent
+$ tmux setw -q @foo "abc123"
+$ tmux showw -v @foo
+abc123
+.Ed
+.Pp
 Commands which set options are as follows:
 .Bl -tag -width Ds
 .It Xo Ic set-option