Commit: patch 9.2.0548: GTK4: terminal and pty job output is not processed

[Christian Brabandt]

patch 9.2.0548: GTK4: terminal and pty job output is not processed

Commit: https://github.com/vim/vim/commit/af8845e3afa8746290bcc91eeac7a8629dd96d7e
Author: Foxe Chen <chen...@gmail.com>
Date: Thu May 28 19:29:55 2026 +0000

patch 9.2.0548: GTK4: terminal and pty job output is not processed

Problem: GTK4: terminal and pty job output is not processed
Solution: When there is at least one channel with the keep_open flag,
arm a 20ms timer that calls channel_handle_events() and
parse_queued_messages(), matching the behaviour of the GTK2/3
backend (Foxe Chen).

fixes: #20345
closes: #20350

Signed-off-by: Foxe Chen <chen...@gmail.com>
Signed-off-by: Christian Brabandt <c...@256bit.org>

diff --git a/src/gui_gtk4.c b/src/gui_gtk4.c
index 2b09ce1ce..e87733728 100644
--- a/src/gui_gtk4.c
+++ b/src/gui_gtk4.c
@@ -2132,6 +2132,18 @@ gui_mch_update(void)
g_main_context_iteration(NULL, TRUE);
}

+#ifdef FEAT_JOB_CHANNEL
+ static timeout_cb_type
+channel_poll_cb(gpointer data UNUSED)
+{
+ // Using an event handler for a channel that may be disconnected does
+ // not work, it hangs. Instead poll for messages.
+ channel_handle_events(TRUE);
+ parse_queued_messages();
+ return TRUE; // Keep repeating
+}
+#endif
+
int
gui_mch_wait_for_chars(long wtime)
{
@@ -2139,6 +2151,9 @@ gui_mch_wait_for_chars(long wtime)
guint timer;
static int timed_out;
int retval = FAIL;
+#ifdef FEAT_JOB_CHANNEL
+ guint channel_timer = 0;
+#endif

timed_out = FALSE;

@@ -2148,6 +2163,13 @@ gui_mch_wait_for_chars(long wtime)
else
timer = 0;

+#ifdef FEAT_JOB_CHANNEL
+ // If there is a channel with the keep_open flag we need to poll for input
+ // on them.
+ if (channel_any_keep_open())
+ channel_timer = timeout_add(20, channel_poll_cb, NULL);
+#endif
+
focus = gui.in_focus;

do
@@ -2203,6 +2225,10 @@ gui_mch_wait_for_chars(long wtime)
theend:
if (timer != 0 && !timed_out)
timeout_remove(timer);
+#ifdef FEAT_JOB_CHANNEL
+ if (channel_timer != 0)
+ timeout_remove(channel_timer);
+#endif

return retval;
}
diff --git a/src/version.c b/src/version.c
index 5fda77f1b..7b71661ea 100644
--- a/src/version.c
+++ b/src/version.c
@@ -729,6 +729,8 @@ static char *(features[]) =

static int included_patches[] =
{ /* Add new patch number below this line */
+/**/
+ 548,
/**/
547,
/**/