input: check for abort cmd in multi-commands

MP_CMD_COMMAND_LIST commands (used to implement key bindings with
multiple commands) were not checked for abort commands. Implement it.

Remove the remarks about multi-commands being special from the manpage.
Seek coalescing is handled differently now, and the issue with abort
commands is fixed with this commit.

DOCS/man/en/input.rst

@@ -52,11 +52,6 @@ You can bind multiple commands to one key. For example:
 
 | a show_text "command 1" ; show_text "command 2"
 
-Note that some magic is disabled for keys: seek commands inside lists are not
-coalesced (seeking will appear slower), and no check is done for abort commands
-(so these commands can't be used to abort playback if the network cache is
-stuck).
-
 List of Input Commands
 ----------------------
 

input/cmd_list.c

@@ -255,7 +255,7 @@ bool mp_replace_legacy_cmd(void *t, bstr *s)
     return false;
 }
 
-bool mp_input_is_abort_cmd(int cmd_id)
+static bool is_abort_cmd(int cmd_id)
 {
     switch (cmd_id) {
     case MP_CMD_QUIT:
@@ -266,6 +266,20 @@ bool mp_input_is_abort_cmd(int cmd_id)
     return false;
 }
 
+bool mp_input_is_abort_cmd(struct mp_cmd *cmd)
+{
+    if (is_abort_cmd(cmd->id))
+        return true;
+    if (cmd->id == MP_CMD_COMMAND_LIST) {
+        for (struct mp_cmd *sub = cmd->args[0].v.p; sub; sub = sub->queue_next)
+        {
+            if (mp_input_is_abort_cmd(cmd))
+                return true;
+        }
+    }
+    return false;
+}
+
 void mp_print_cmd_list(struct mp_log *out)
 {
     for (int i = 0; mp_cmds[i].name; i++) {

input/cmd_list.h

@@ -108,7 +108,8 @@ enum mp_command_type {
 };
 
 // Executing this command will abort playback (play something else, or quit).
-bool mp_input_is_abort_cmd(int cmd_id);
+struct mp_cmd;
+bool mp_input_is_abort_cmd(struct mp_cmd *cmd);
 
 struct bstr;
 bool mp_replace_legacy_cmd(void *talloc_ctx, struct bstr *s);

input/input.c

@@ -238,7 +238,7 @@ static bool queue_has_abort_cmds(struct cmd_queue *queue)
 {
     bool ret = false;
     for (struct mp_cmd *cmd = queue->first; cmd; cmd = cmd->queue_next)
-        if (mp_input_is_abort_cmd(cmd->id)) {
+        if (mp_input_is_abort_cmd(cmd)) {
             ret = true;
             break;
         }
@@ -584,7 +584,7 @@ static bool should_drop_cmd(struct input_ctx *ictx, struct mp_cmd *cmd)
 {
     struct cmd_queue *queue = &ictx->cmd_queue;
     return (queue_count_cmds(queue) >= ictx->key_fifo_size &&
-            (!mp_input_is_abort_cmd(cmd->id) || queue_has_abort_cmds(queue)));
+            (!mp_input_is_abort_cmd(cmd) || queue_has_abort_cmds(queue)));
 }
 
 static void interpret_key(struct input_ctx *ictx, int code, double scale)

player/loadfile.c

@@ -1024,7 +1024,7 @@ static bool demux_was_interrupted(struct MPContext *mpctx)
         mp_cmd_t *cmd = mp_input_get_cmd(mpctx->input, 0, 0);
         if (!cmd)
             break;
-        if (mp_input_is_abort_cmd(cmd->id))
+        if (mp_input_is_abort_cmd(cmd))
             run_command(mpctx, cmd);
         mp_cmd_free(cmd);
     }