Adding upstream version 3.3a.upstream/3.3a

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

1 files changed, 872 insertions, 0 deletions

diff --git a/cmd.c b/cmd.c
new file mode 100644
index 0000000..ed4f994
--- /dev/null
+++ b/cmd.c
@@ -0,0 +1,872 @@
+/* $OpenBSD$ */
+
+/*
+ * Copyright (c) 2007 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>
+#include <sys/time.h>
+
+#include <fnmatch.h>
+#include <pwd.h>
+#include <stdlib.h>
+#include <string.h>
+#include <unistd.h>
+
+#include "tmux.h"
+
+extern const struct cmd_entry cmd_attach_session_entry;
+extern const struct cmd_entry cmd_bind_key_entry;
+extern const struct cmd_entry cmd_break_pane_entry;
+extern const struct cmd_entry cmd_capture_pane_entry;
+extern const struct cmd_entry cmd_choose_buffer_entry;
+extern const struct cmd_entry cmd_choose_client_entry;
+extern const struct cmd_entry cmd_choose_tree_entry;
+extern const struct cmd_entry cmd_clear_history_entry;
+extern const struct cmd_entry cmd_clear_prompt_history_entry;
+extern const struct cmd_entry cmd_clock_mode_entry;
+extern const struct cmd_entry cmd_command_prompt_entry;
+extern const struct cmd_entry cmd_confirm_before_entry;
+extern const struct cmd_entry cmd_copy_mode_entry;
+extern const struct cmd_entry cmd_customize_mode_entry;
+extern const struct cmd_entry cmd_delete_buffer_entry;
+extern const struct cmd_entry cmd_detach_client_entry;
+extern const struct cmd_entry cmd_display_menu_entry;
+extern const struct cmd_entry cmd_display_message_entry;
+extern const struct cmd_entry cmd_display_popup_entry;
+extern const struct cmd_entry cmd_display_panes_entry;
+extern const struct cmd_entry cmd_down_pane_entry;
+extern const struct cmd_entry cmd_find_window_entry;
+extern const struct cmd_entry cmd_has_session_entry;
+extern const struct cmd_entry cmd_if_shell_entry;
+extern const struct cmd_entry cmd_join_pane_entry;
+extern const struct cmd_entry cmd_kill_pane_entry;
+extern const struct cmd_entry cmd_kill_server_entry;
+extern const struct cmd_entry cmd_kill_session_entry;
+extern const struct cmd_entry cmd_kill_window_entry;
+extern const struct cmd_entry cmd_last_pane_entry;
+extern const struct cmd_entry cmd_last_window_entry;
+extern const struct cmd_entry cmd_link_window_entry;
+extern const struct cmd_entry cmd_list_buffers_entry;
+extern const struct cmd_entry cmd_list_clients_entry;
+extern const struct cmd_entry cmd_list_commands_entry;
+extern const struct cmd_entry cmd_list_keys_entry;
+extern const struct cmd_entry cmd_list_panes_entry;
+extern const struct cmd_entry cmd_list_sessions_entry;
+extern const struct cmd_entry cmd_list_windows_entry;
+extern const struct cmd_entry cmd_load_buffer_entry;
+extern const struct cmd_entry cmd_lock_client_entry;
+extern const struct cmd_entry cmd_lock_server_entry;
+extern const struct cmd_entry cmd_lock_session_entry;
+extern const struct cmd_entry cmd_move_pane_entry;
+extern const struct cmd_entry cmd_move_window_entry;
+extern const struct cmd_entry cmd_new_session_entry;
+extern const struct cmd_entry cmd_new_window_entry;
+extern const struct cmd_entry cmd_next_layout_entry;
+extern const struct cmd_entry cmd_next_window_entry;
+extern const struct cmd_entry cmd_paste_buffer_entry;
+extern const struct cmd_entry cmd_pipe_pane_entry;
+extern const struct cmd_entry cmd_previous_layout_entry;
+extern const struct cmd_entry cmd_previous_window_entry;
+extern const struct cmd_entry cmd_refresh_client_entry;
+extern const struct cmd_entry cmd_rename_session_entry;
+extern const struct cmd_entry cmd_rename_window_entry;
+extern const struct cmd_entry cmd_resize_pane_entry;
+extern const struct cmd_entry cmd_resize_window_entry;
+extern const struct cmd_entry cmd_respawn_pane_entry;
+extern const struct cmd_entry cmd_respawn_window_entry;
+extern const struct cmd_entry cmd_rotate_window_entry;
+extern const struct cmd_entry cmd_run_shell_entry;
+extern const struct cmd_entry cmd_save_buffer_entry;
+extern const struct cmd_entry cmd_select_layout_entry;
+extern const struct cmd_entry cmd_select_pane_entry;
+extern const struct cmd_entry cmd_select_window_entry;
+extern const struct cmd_entry cmd_send_keys_entry;
+extern const struct cmd_entry cmd_send_prefix_entry;
+extern const struct cmd_entry cmd_server_access_entry;
+extern const struct cmd_entry cmd_set_buffer_entry;
+extern const struct cmd_entry cmd_set_environment_entry;
+extern const struct cmd_entry cmd_set_hook_entry;
+extern const struct cmd_entry cmd_set_option_entry;
+extern const struct cmd_entry cmd_set_window_option_entry;
+extern const struct cmd_entry cmd_show_buffer_entry;
+extern const struct cmd_entry cmd_show_environment_entry;
+extern const struct cmd_entry cmd_show_hooks_entry;
+extern const struct cmd_entry cmd_show_messages_entry;
+extern const struct cmd_entry cmd_show_options_entry;
+extern const struct cmd_entry cmd_show_prompt_history_entry;
+extern const struct cmd_entry cmd_show_window_options_entry;
+extern const struct cmd_entry cmd_source_file_entry;
+extern const struct cmd_entry cmd_split_window_entry;
+extern const struct cmd_entry cmd_start_server_entry;
+extern const struct cmd_entry cmd_suspend_client_entry;
+extern const struct cmd_entry cmd_swap_pane_entry;
+extern const struct cmd_entry cmd_swap_window_entry;
+extern const struct cmd_entry cmd_switch_client_entry;
+extern const struct cmd_entry cmd_unbind_key_entry;
+extern const struct cmd_entry cmd_unlink_window_entry;
+extern const struct cmd_entry cmd_up_pane_entry;
+extern const struct cmd_entry cmd_wait_for_entry;
+
+const struct cmd_entry *cmd_table[] = {
+	&cmd_attach_session_entry,
+	&cmd_bind_key_entry,
+	&cmd_break_pane_entry,
+	&cmd_capture_pane_entry,
+	&cmd_choose_buffer_entry,
+	&cmd_choose_client_entry,
+	&cmd_choose_tree_entry,
+	&cmd_clear_history_entry,
+	&cmd_clear_prompt_history_entry,
+	&cmd_clock_mode_entry,
+	&cmd_command_prompt_entry,
+	&cmd_confirm_before_entry,
+	&cmd_copy_mode_entry,
+	&cmd_customize_mode_entry,
+	&cmd_delete_buffer_entry,
+	&cmd_detach_client_entry,
+	&cmd_display_menu_entry,
+	&cmd_display_message_entry,
+	&cmd_display_popup_entry,
+	&cmd_display_panes_entry,
+	&cmd_find_window_entry,
+	&cmd_has_session_entry,
+	&cmd_if_shell_entry,
+	&cmd_join_pane_entry,
+	&cmd_kill_pane_entry,
+	&cmd_kill_server_entry,
+	&cmd_kill_session_entry,
+	&cmd_kill_window_entry,
+	&cmd_last_pane_entry,
+	&cmd_last_window_entry,
+	&cmd_link_window_entry,
+	&cmd_list_buffers_entry,
+	&cmd_list_clients_entry,
+	&cmd_list_commands_entry,
+	&cmd_list_keys_entry,
+	&cmd_list_panes_entry,
+	&cmd_list_sessions_entry,
+	&cmd_list_windows_entry,
+	&cmd_load_buffer_entry,
+	&cmd_lock_client_entry,
+	&cmd_lock_server_entry,
+	&cmd_lock_session_entry,
+	&cmd_move_pane_entry,
+	&cmd_move_window_entry,
+	&cmd_new_session_entry,
+	&cmd_new_window_entry,
+	&cmd_next_layout_entry,
+	&cmd_next_window_entry,
+	&cmd_paste_buffer_entry,
+	&cmd_pipe_pane_entry,
+	&cmd_previous_layout_entry,
+	&cmd_previous_window_entry,
+	&cmd_refresh_client_entry,
+	&cmd_rename_session_entry,
+	&cmd_rename_window_entry,
+	&cmd_resize_pane_entry,
+	&cmd_resize_window_entry,
+	&cmd_respawn_pane_entry,
+	&cmd_respawn_window_entry,
+	&cmd_rotate_window_entry,
+	&cmd_run_shell_entry,
+	&cmd_save_buffer_entry,
+	&cmd_select_layout_entry,
+	&cmd_select_pane_entry,
+	&cmd_select_window_entry,
+	&cmd_send_keys_entry,
+	&cmd_send_prefix_entry,
+	&cmd_server_access_entry,
+	&cmd_set_buffer_entry,
+	&cmd_set_environment_entry,
+	&cmd_set_hook_entry,
+	&cmd_set_option_entry,
+	&cmd_set_window_option_entry,
+	&cmd_show_buffer_entry,
+	&cmd_show_environment_entry,
+	&cmd_show_hooks_entry,
+	&cmd_show_messages_entry,
+	&cmd_show_options_entry,
+	&cmd_show_prompt_history_entry,
+	&cmd_show_window_options_entry,
+	&cmd_source_file_entry,
+	&cmd_split_window_entry,
+	&cmd_start_server_entry,
+	&cmd_suspend_client_entry,
+	&cmd_swap_pane_entry,
+	&cmd_swap_window_entry,
+	&cmd_switch_client_entry,
+	&cmd_unbind_key_entry,
+	&cmd_unlink_window_entry,
+	&cmd_wait_for_entry,
+	NULL
+};
+
+/* Instance of a command. */
+struct cmd {
+	const struct cmd_entry	 *entry;
+	struct args		 *args;
+	u_int			  group;
+
+	char			 *file;
+	u_int			  line;
+
+	TAILQ_ENTRY(cmd)	  qentry;
+};
+TAILQ_HEAD(cmds, cmd);
+
+/* Next group number for new command list. */
+static u_int cmd_list_next_group = 1;
+
+/* Log an argument vector. */
+void printflike(3, 4)
+cmd_log_argv(int argc, char **argv, const char *fmt, ...)
+{
+	char	*prefix;
+	va_list	 ap;
+	int	 i;
+
+	va_start(ap, fmt);
+	xvasprintf(&prefix, fmt, ap);
+	va_end(ap);
+
+	for (i = 0; i < argc; i++)
+		log_debug("%s: argv[%d]=%s", prefix, i, argv[i]);
+	free(prefix);
+}
+
+/* Prepend to an argument vector. */
+void
+cmd_prepend_argv(int *argc, char ***argv, const char *arg)
+{
+	char	**new_argv;
+	int	  i;
+
+	new_argv = xreallocarray(NULL, (*argc) + 1, sizeof *new_argv);
+	new_argv[0] = xstrdup(arg);
+	for (i = 0; i < *argc; i++)
+		new_argv[1 + i] = (*argv)[i];
+
+	free(*argv);
+	*argv = new_argv;
+	(*argc)++;
+}
+
+/* Append to an argument vector. */
+void
+cmd_append_argv(int *argc, char ***argv, const char *arg)
+{
+	*argv = xreallocarray(*argv, (*argc) + 1, sizeof **argv);
+	(*argv)[(*argc)++] = xstrdup(arg);
+}
+
+/* Pack an argument vector up into a buffer. */
+int
+cmd_pack_argv(int argc, char **argv, char *buf, size_t len)
+{
+	size_t	arglen;
+	int	i;
+
+	if (argc == 0)
+		return (0);
+	cmd_log_argv(argc, argv, "%s", __func__);
+
+	*buf = '\0';
+	for (i = 0; i < argc; i++) {
+		if (strlcpy(buf, argv[i], len) >= len)
+			return (-1);
+		arglen = strlen(argv[i]) + 1;
+		buf += arglen;
+		len -= arglen;
+	}
+
+	return (0);
+}
+
+/* Unpack an argument vector from a packed buffer. */
+int
+cmd_unpack_argv(char *buf, size_t len, int argc, char ***argv)
+{
+	int	i;
+	size_t	arglen;
+
+	if (argc == 0)
+		return (0);
+	*argv = xcalloc(argc, sizeof **argv);
+
+	buf[len - 1] = '\0';
+	for (i = 0; i < argc; i++) {
+		if (len == 0) {
+			cmd_free_argv(argc, *argv);
+			return (-1);
+		}
+
+		arglen = strlen(buf) + 1;
+		(*argv)[i] = xstrdup(buf);
+
+		buf += arglen;
+		len -= arglen;
+	}
+	cmd_log_argv(argc, *argv, "%s", __func__);
+
+	return (0);
+}
+
+/* Copy an argument vector, ensuring it is terminated by NULL. */
+char **
+cmd_copy_argv(int argc, char **argv)
+{
+	char	**new_argv;
+	int	  i;
+
+	if (argc == 0)
+		return (NULL);
+	new_argv = xcalloc(argc + 1, sizeof *new_argv);
+	for (i = 0; i < argc; i++) {
+		if (argv[i] != NULL)
+			new_argv[i] = xstrdup(argv[i]);
+	}
+	return (new_argv);
+}
+
+/* Free an argument vector. */
+void
+cmd_free_argv(int argc, char **argv)
+{
+	int	i;
+
+	if (argc == 0)
+		return;
+	for (i = 0; i < argc; i++)
+		free(argv[i]);
+	free(argv);
+}
+
+/* Convert argument vector to a string. */
+char *
+cmd_stringify_argv(int argc, char **argv)
+{
+	char	*buf = NULL, *s;
+	size_t	 len = 0;
+	int	 i;
+
+	if (argc == 0)
+		return (xstrdup(""));
+
+	for (i = 0; i < argc; i++) {
+		s = args_escape(argv[i]);
+		log_debug("%s: %u %s = %s", __func__, i, argv[i], s);
+
+		len += strlen(s) + 1;
+		buf = xrealloc(buf, len);
+
+		if (i == 0)
+			*buf = '\0';
+		else
+			strlcat(buf, " ", len);
+		strlcat(buf, s, len);
+
+		free(s);
+	}
+	return (buf);
+}
+
+/* Get entry for command. */
+const struct cmd_entry *
+cmd_get_entry(struct cmd *cmd)
+{
+	return (cmd->entry);
+}
+
+/* Get arguments for command. */
+struct args *
+cmd_get_args(struct cmd *cmd)
+{
+	return (cmd->args);
+}
+
+/* Get group for command. */
+u_int
+cmd_get_group(struct cmd *cmd)
+{
+	return (cmd->group);
+}
+
+/* Get file and line for command. */
+void
+cmd_get_source(struct cmd *cmd, const char **file, u_int *line)
+{
+	if (file != NULL)
+		*file = cmd->file;
+	if (line != NULL)
+		*line = cmd->line;
+}
+
+/* Look for an alias for a command. */
+char *
+cmd_get_alias(const char *name)
+{
+	struct options_entry		*o;
+	struct options_array_item	*a;
+	union options_value		*ov;
+	size_t				 wanted, n;
+	const char			*equals;
+
+	o = options_get_only(global_options, "command-alias");
+	if (o == NULL)
+		return (NULL);
+	wanted = strlen(name);
+
+	a = options_array_first(o);
+	while (a != NULL) {
+		ov = options_array_item_value(a);
+
+		equals = strchr(ov->string, '=');
+		if (equals != NULL) {
+			n = equals - ov->string;
+			if (n == wanted && strncmp(name, ov->string, n) == 0)
+				return (xstrdup(equals + 1));
+		}
+
+		a = options_array_next(a);
+	}
+	return (NULL);
+}
+
+/* Look up a command entry by name. */
+static const struct cmd_entry *
+cmd_find(const char *name, char **cause)
+{
+	const struct cmd_entry	**loop, *entry, *found = NULL;
+	int			  ambiguous;
+	char			  s[8192];
+
+	ambiguous = 0;
+	for (loop = cmd_table; *loop != NULL; loop++) {
+		entry = *loop;
+		if (entry->alias != NULL && strcmp(entry->alias, name) == 0) {
+			ambiguous = 0;
+			found = entry;
+			break;
+		}
+
+		if (strncmp(entry->name, name, strlen(name)) != 0)
+			continue;
+		if (found != NULL)
+			ambiguous = 1;
+		found = entry;
+
+		if (strcmp(entry->name, name) == 0)
+			break;
+	}
+	if (ambiguous)
+		goto ambiguous;
+	if (found == NULL) {
+		xasprintf(cause, "unknown command: %s", name);
+		return (NULL);
+	}
+	return (found);
+
+ambiguous:
+	*s = '\0';
+	for (loop = cmd_table; *loop != NULL; loop++) {
+		entry = *loop;
+		if (strncmp(entry->name, name, strlen(name)) != 0)
+			continue;
+		if (strlcat(s, entry->name, sizeof s) >= sizeof s)
+			break;
+		if (strlcat(s, ", ", sizeof s) >= sizeof s)
+			break;
+	}
+	s[strlen(s) - 2] = '\0';
+	xasprintf(cause, "ambiguous command: %s, could be: %s", name, s);
+	return (NULL);
+}
+
+/* Parse a single command from an argument vector. */
+struct cmd *
+cmd_parse(struct args_value *values, u_int count, const char *file, u_int line,
+    char **cause)
+{
+	const struct cmd_entry	*entry;
+	struct cmd		*cmd;
+	struct args		*args;
+	char			*error = NULL;
+
+	if (count == 0 || values[0].type != ARGS_STRING) {
+		xasprintf(cause, "no command");
+		return (NULL);
+	}
+	entry = cmd_find(values[0].string, cause);
+	if (entry == NULL)
+		return (NULL);
+
+	args = args_parse(&entry->args, values, count, &error);
+	if (args == NULL && error == NULL) {
+		xasprintf(cause, "usage: %s %s", entry->name, entry->usage);
+		return (NULL);
+	}
+	if (args == NULL) {
+		xasprintf(cause, "command %s: %s", entry->name, error);
+		free(error);
+		return (NULL);
+	}
+
+	cmd = xcalloc(1, sizeof *cmd);
+	cmd->entry = entry;
+	cmd->args = args;
+
+	if (file != NULL)
+		cmd->file = xstrdup(file);
+	cmd->line = line;
+
+	return (cmd);
+}
+
+/* Free a command. */
+void
+cmd_free(struct cmd *cmd)
+{
+	free(cmd->file);
+
+	args_free(cmd->args);
+	free(cmd);
+}
+
+/* Copy a command. */
+struct cmd *
+cmd_copy(struct cmd *cmd, int argc, char **argv)
+{
+	struct cmd	*new_cmd;
+
+	new_cmd = xcalloc(1, sizeof *new_cmd);
+	new_cmd->entry = cmd->entry;
+	new_cmd->args = args_copy(cmd->args, argc, argv);
+
+	if (cmd->file != NULL)
+		new_cmd->file = xstrdup(cmd->file);
+	new_cmd->line = cmd->line;
+
+	return (new_cmd);
+}
+
+/* Get a command as a string. */
+char *
+cmd_print(struct cmd *cmd)
+{
+	char	*out, *s;
+
+	s = args_print(cmd->args);
+	if (*s != '\0')
+		xasprintf(&out, "%s %s", cmd->entry->name, s);
+	else
+		out = xstrdup(cmd->entry->name);
+	free(s);
+
+	return (out);
+}
+
+/* Create a new command list. */
+struct cmd_list *
+cmd_list_new(void)
+{
+	struct cmd_list	*cmdlist;
+
+	cmdlist = xcalloc(1, sizeof *cmdlist);
+	cmdlist->references = 1;
+	cmdlist->group = cmd_list_next_group++;
+	cmdlist->list = xcalloc(1, sizeof *cmdlist->list);
+	TAILQ_INIT(cmdlist->list);
+	return (cmdlist);
+}
+
+/* Append a command to a command list. */
+void
+cmd_list_append(struct cmd_list *cmdlist, struct cmd *cmd)
+{
+	cmd->group = cmdlist->group;
+	TAILQ_INSERT_TAIL(cmdlist->list, cmd, qentry);
+}
+
+/* Append all commands from one list to another.  */
+void
+cmd_list_append_all(struct cmd_list *cmdlist, struct cmd_list *from)
+{
+	struct cmd	*cmd;
+
+	TAILQ_FOREACH(cmd, from->list, qentry)
+		cmd->group = cmdlist->group;
+	TAILQ_CONCAT(cmdlist->list, from->list, qentry);
+}
+
+/* Move all commands from one command list to another. */
+void
+cmd_list_move(struct cmd_list *cmdlist, struct cmd_list *from)
+{
+	TAILQ_CONCAT(cmdlist->list, from->list, qentry);
+	cmdlist->group = cmd_list_next_group++;
+}
+
+/* Free a command list. */
+void
+cmd_list_free(struct cmd_list *cmdlist)
+{
+	struct cmd	*cmd, *cmd1;
+
+	if (--cmdlist->references != 0)
+		return;
+
+	TAILQ_FOREACH_SAFE(cmd, cmdlist->list, qentry, cmd1) {
+		TAILQ_REMOVE(cmdlist->list, cmd, qentry);
+		cmd_free(cmd);
+	}
+	free(cmdlist->list);
+	free(cmdlist);
+}
+
+/* Copy a command list, expanding %s in arguments. */
+struct cmd_list *
+cmd_list_copy(struct cmd_list *cmdlist, int argc, char **argv)
+{
+	struct cmd	*cmd;
+	struct cmd_list	*new_cmdlist;
+	struct cmd	*new_cmd;
+	u_int		 group = cmdlist->group;
+	char		*s;
+
+	s = cmd_list_print(cmdlist, 0);
+	log_debug("%s: %s", __func__, s);
+	free(s);
+
+	new_cmdlist = cmd_list_new();
+	TAILQ_FOREACH(cmd, cmdlist->list, qentry) {
+		if (cmd->group != group) {
+			new_cmdlist->group = cmd_list_next_group++;
+			group = cmd->group;
+		}
+		new_cmd = cmd_copy(cmd, argc, argv);
+		cmd_list_append(new_cmdlist, new_cmd);
+	}
+
+	s = cmd_list_print(new_cmdlist, 0);
+	log_debug("%s: %s", __func__, s);
+	free(s);
+
+	return (new_cmdlist);
+}
+
+/* Get a command list as a string. */
+char *
+cmd_list_print(struct cmd_list *cmdlist, int escaped)
+{
+	struct cmd	*cmd, *next;
+	char		*buf, *this;
+	size_t		 len;
+
+	len = 1;
+	buf = xcalloc(1, len);
+
+	TAILQ_FOREACH(cmd, cmdlist->list, qentry) {
+		this = cmd_print(cmd);
+
+		len += strlen(this) + 6;
+		buf = xrealloc(buf, len);
+
+		strlcat(buf, this, len);
+
+		next = TAILQ_NEXT(cmd, qentry);
+		if (next != NULL) {
+			if (cmd->group != next->group) {
+				if (escaped)
+					strlcat(buf, " \\;\\; ", len);
+				else
+					strlcat(buf, " ;; ", len);
+			} else {
+				if (escaped)
+					strlcat(buf, " \\; ", len);
+				else
+					strlcat(buf, " ; ", len);
+			}
+		}
+
+		free(this);
+	}
+
+	return (buf);
+}
+
+/* Get first command in list. */
+struct cmd *
+cmd_list_first(struct cmd_list *cmdlist)
+{
+	return (TAILQ_FIRST(cmdlist->list));
+}
+
+/* Get next command in list. */
+struct cmd *
+cmd_list_next(struct cmd *cmd)
+{
+	return (TAILQ_NEXT(cmd, qentry));
+}
+
+/* Do all of the commands in this command list have this flag? */
+int
+cmd_list_all_have(struct cmd_list *cmdlist, int flag)
+{
+	struct cmd	*cmd;
+
+	TAILQ_FOREACH(cmd, cmdlist->list, qentry) {
+		if (~cmd->entry->flags & flag)
+			return (0);
+	}
+	return (1);
+}
+
+/* Do any of the commands in this command list have this flag? */
+int
+cmd_list_any_have(struct cmd_list *cmdlist, int flag)
+{
+	struct cmd	*cmd;
+
+	TAILQ_FOREACH(cmd, cmdlist->list, qentry) {
+		if (cmd->entry->flags & flag)
+			return (1);
+	}
+	return (0);
+}
+
+/* Adjust current mouse position for a pane. */
+int
+cmd_mouse_at(struct window_pane *wp, struct mouse_event *m, u_int *xp,
+    u_int *yp, int last)
+{
+	u_int	x, y;
+
+	if (last) {
+		x = m->lx + m->ox;
+		y = m->ly + m->oy;
+	} else {
+		x = m->x + m->ox;
+		y = m->y + m->oy;
+	}
+	log_debug("%s: x=%u, y=%u%s", __func__, x, y, last ? " (last)" : "");
+
+	if (m->statusat == 0 && y >= m->statuslines)
+		y -= m->statuslines;
+
+	if (x < wp->xoff || x >= wp->xoff + wp->sx)
+		return (-1);
+	if (y < wp->yoff || y >= wp->yoff + wp->sy)
+		return (-1);
+
+	if (xp != NULL)
+		*xp = x - wp->xoff;
+	if (yp != NULL)
+		*yp = y - wp->yoff;
+	return (0);
+}
+
+/* Get current mouse window if any. */
+struct winlink *
+cmd_mouse_window(struct mouse_event *m, struct session **sp)
+{
+	struct session	*s;
+	struct window	*w;
+	struct winlink	*wl;
+
+	if (!m->valid)
+		return (NULL);
+	if (m->s == -1 || (s = session_find_by_id(m->s)) == NULL)
+		return (NULL);
+	if (m->w == -1)
+		wl = s->curw;
+	else {
+		if ((w = window_find_by_id(m->w)) == NULL)
+			return (NULL);
+		wl = winlink_find_by_window(&s->windows, w);
+	}
+	if (sp != NULL)
+		*sp = s;
+	return (wl);
+}
+
+/* Get current mouse pane if any. */
+struct window_pane *
+cmd_mouse_pane(struct mouse_event *m, struct session **sp,
+    struct winlink **wlp)
+{
+	struct winlink		*wl;
+	struct window_pane     	*wp;
+
+	if ((wl = cmd_mouse_window(m, sp)) == NULL)
+		return (NULL);
+	if ((wp = window_pane_find_by_id(m->wp)) == NULL)
+		return (NULL);
+	if (!window_has_pane(wl->window, wp))
+		return (NULL);
+
+	if (wlp != NULL)
+		*wlp = wl;
+	return (wp);
+}
+
+/* Replace the first %% or %idx in template by s. */
+char *
+cmd_template_replace(const char *template, const char *s, int idx)
+{
+	char		 ch, *buf;
+	const char	*ptr, *cp, quote[] = "\"\\$;~";
+	int		 replaced, quoted;
+	size_t		 len;
+
+	if (strchr(template, '%') == NULL)
+		return (xstrdup(template));
+
+	buf = xmalloc(1);
+	*buf = '\0';
+	len = 0;
+	replaced = 0;
+
+	ptr = template;
+	while (*ptr != '\0') {
+		switch (ch = *ptr++) {
+		case '%':
+			if (*ptr < '1' || *ptr > '9' || *ptr - '0' != idx) {
+				if (*ptr != '%' || replaced)
+					break;
+				replaced = 1;
+			}
+			ptr++;
+
+			quoted = (*ptr == '%');
+			if (quoted)
+				ptr++;
+
+			buf = xrealloc(buf, len + (strlen(s) * 3) + 1);
+			for (cp = s; *cp != '\0'; cp++) {
+				if (quoted && strchr(quote, *cp) != NULL)
+					buf[len++] = '\\';
+				buf[len++] = *cp;
+			}
+			buf[len] = '\0';
+			continue;
+		}
+		buf = xrealloc(buf, len + 2);
+		buf[len++] = ch;
+		buf[len] = '\0';
+	}
+
+	return (buf);
+}