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, 8 insertions, 8 deletions

diff --git a/usr.bin/tmux/cmd-unbind-key.c b/usr.bin/tmux/cmd-unbind-key.c
index 6d51a2d8876..69d3d4472b2 100644
--- a/usr.bin/tmux/cmd-unbind-key.c
+++ b/usr.bin/tmux/cmd-unbind-key.c
@@ -1,4 +1,4 @@
-/* $OpenBSD: cmd-unbind-key.c,v 1.15 2012/07/11 07:10:15 nicm Exp $ */
+/* $OpenBSD: cmd-unbind-key.c,v 1.16 2013/03/24 09:54:10 nicm Exp $ */
 
 /*
  * Copyright (c) 2007 Nicholas Marriott <nicm@users.sourceforge.net>
@@ -27,8 +27,8 @@
  */
 
 enum cmd_retval	 cmd_unbind_key_check(struct args *);
-enum cmd_retval	 cmd_unbind_key_exec(struct cmd *, struct cmd_ctx *);
-enum cmd_retval	 cmd_unbind_key_table(struct cmd *, struct cmd_ctx *, int);
+enum cmd_retval	 cmd_unbind_key_exec(struct cmd *, struct cmd_q *);
+enum cmd_retval	 cmd_unbind_key_table(struct cmd *, struct cmd_q *, int);
 
 const struct cmd_entry cmd_unbind_key_entry = {
 	"unbind-key", "unbind",
@@ -51,7 +51,7 @@ cmd_unbind_key_check(struct args *args)
 }
 
 enum cmd_retval
-cmd_unbind_key_exec(struct cmd *self, unused struct cmd_ctx *ctx)
+cmd_unbind_key_exec(struct cmd *self, struct cmd_q *cmdq)
 {
 	struct args		*args = self->args;
 	struct key_binding	*bd;
@@ -60,14 +60,14 @@ cmd_unbind_key_exec(struct cmd *self, unused struct cmd_ctx *ctx)
 	if (!args_has(args, 'a')) {
 		key = key_string_lookup_string(args->argv[0]);
 		if (key == KEYC_NONE) {
-			ctx->error(ctx, "unknown key: %s", args->argv[0]);
+			cmdq_error(cmdq, "unknown key: %s", args->argv[0]);
 			return (CMD_RETURN_ERROR);
 		}
 	} else
 		key = KEYC_NONE;
 
 	if (args_has(args, 't'))
-		return (cmd_unbind_key_table(self, ctx, key));
+		return (cmd_unbind_key_table(self, cmdq, key));
 
 	if (key == KEYC_NONE) {
 		while (!RB_EMPTY(&key_bindings)) {
@@ -84,7 +84,7 @@ cmd_unbind_key_exec(struct cmd *self, unused struct cmd_ctx *ctx)
 }
 
 enum cmd_retval
-cmd_unbind_key_table(struct cmd *self, struct cmd_ctx *ctx, int key)
+cmd_unbind_key_table(struct cmd *self, struct cmd_q *cmdq, int key)
 {
 	struct args			*args = self->args;
 	const char			*tablename;
@@ -93,7 +93,7 @@ cmd_unbind_key_table(struct cmd *self, struct cmd_ctx *ctx, int key)
 
 	tablename = args_get(args, 't');
 	if ((mtab = mode_key_findtable(tablename)) == NULL) {
-		ctx->error(ctx, "unknown key table: %s", tablename);
+		cmdq_error(cmdq, "unknown key table: %s", tablename);
 		return (CMD_RETURN_ERROR);
 	}