Subject: bug#51009: 29.0.50; [PATCH] Fix small error in comint-send-input

From: [email-masked]
Date: Mon, 04 Oct 2021 16:21:08 +0200

To reproduce this error, emacs -q:

1) M-x shell
2) Press RET a few times to make some shell prompts
3) Press C-p to go to the end of a non-last prompt
4) M-x comint-set-process-mark
5) type "echo foo" RET

An error is then signaled:
ansi-color-apply-on-region: Invalid search bound (wrong side of point).
From 0a445ba23f18a902f807b36489695648b2e20b9a Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Miha=20Rihtar=C5=A1i=C4=8D?= <[email-masked]>
Date: Mon, 4 Oct 2021 13:49:43 +0200
Subject: [PATCH] Fix small error in comint-send-input

* lisp/comint.el (comint-send-input): Run
comint-output-filter-functions with comint-last-output-start set
correctly.
---
 lisp/comint.el | 1 +
 1 file changed, 1 insertion(+)

diff --git a/lisp/comint.el b/lisp/comint.el
index 1e5b990c77..a0873c0b6a 100644
--- a/lisp/comint.el
+++ b/lisp/comint.el
@@ -1990,6 +1990,7 @@ comint-send-input
 
         ;; This used to call comint-output-filter-functions,
         ;; but that scrolled the buffer in undesirable ways.
+        (set-marker comint-last-output-start pmark)
         (run-hook-with-args 'comint-output-filter-functions "")))))
 
 (defvar comint-preoutput-filter-functions nil
-- 
2.33.0