Add a command queue to standardize and simplify commands that call other

commands and allow a command to block execution of subsequent
commands. This allows run-shell and if-shell to be synchronous which has
been much requested.

Each client has a default command queue and commands are consumed one at
a time from it. A command may suspend execution from the queue by
returning CMD_RETURN_WAIT and then resume it by calling cmd_continue() -
for example run-shell does this from the callback that is fired after
the job is freed.

When the command queue becomes empty, command clients are automatically
exited (unless attaching). A callback is also fired - this is used for
nested commands in, for example, if-shell which can block execution of
the client's cmdq until a new cmdq becomes empty.

Also merge all the old error/info/print functions together and lose the
old curclient/cmdclient distinction - a cmdq is bound to one client (or
none if in the configuration file), this is a command client if
c->session is NULL otherwise an attached client.

1 files changed, 5 insertions, 12 deletions

diff --git a/usr.bin/tmux/window-choose.c b/usr.bin/tmux/window-choose.c
index 1cb8fbedd62..41698b0350e 100644
--- a/usr.bin/tmux/window-choose.c
+++ b/usr.bin/tmux/window-choose.c
@@ -1,4 +1,4 @@
-/* $OpenBSD: window-choose.c,v 1.44 2013/03/22 15:54:29 nicm Exp $ */
+/* $OpenBSD: window-choose.c,v 1.45 2013/03/24 09:54:10 nicm Exp $ */
 
 /*
  * Copyright (c) 2009 Nicholas Marriott <nicm@users.sourceforge.net>
@@ -200,9 +200,8 @@ window_choose_data_free(struct window_choose_data *wcd)
 void
 window_choose_data_run(struct window_choose_data *cdata)
 {
-	struct cmd_ctx		*ctx;
-	struct cmd_list		*cmdlist;
-	char			*cause;
+	struct cmd_list	*cmdlist;
+	char		*cause;
 
 	/*
 	 * The command template will have already been replaced. But if it's
@@ -211,7 +210,7 @@ window_choose_data_run(struct window_choose_data *cdata)
 	if (cdata->command == NULL)
 		return;
 
-	if (cmd_string_parse(cdata->command, &cmdlist, &cause) != 0) {
+	if (cmd_string_parse(cdata->command, &cmdlist, NULL, 0, &cause) != 0) {
 		if (cause != NULL) {
 			*cause = toupper((u_char) *cause);
 			status_message_set(cdata->start_client, "%s", cause);
@@ -220,14 +219,8 @@ window_choose_data_run(struct window_choose_data *cdata)
 		return;
 	}
 
-	ctx = cmd_get_ctx(NULL, cdata->start_client);
-	ctx->error = key_bindings_error;
-	ctx->print = key_bindings_print;
-	ctx->info = key_bindings_info;
-
-	cmd_list_exec(cmdlist, ctx);
+	cmdq_run(cdata->start_client->cmdq, cmdlist);
 	cmd_list_free(cmdlist);
-	cmd_free_ctx(ctx);
 }
 
 void