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bug#53598: 28.0.91; occur-after-change function errors with args-out-of-
From: |
Eli Zaretskii |
Subject: |
bug#53598: 28.0.91; occur-after-change function errors with args-out-of-range in occur-edit-mode |
Date: |
Fri, 28 Jan 2022 16:27:57 +0200 |
> Date: Fri, 28 Jan 2022 07:28:47 +0000
> From: Jack Henahan <root@proofte.ch>
>
> >From `emacs -Q':
>
> M-x toggle-debug-on-error
> M-s o buffer RET
> C-x o
> C-s buffer C-s C-s RET
> e
> DEL DEL DEL
>
> Debugger entered--Lisp error: (args-out-of-range ";; This buf is for text
> that is not saved, and for..." 11 -57)
> occur-after-change-function(64 64 1)
> delete-backward-char(1 nil)
> funcall-interactively(delete-backward-char 1 nil)
> command-execute(delete-backward-char)
>
> Similar stack traces arise if you choose an arbitrary place in an
> occurrence and, say
>
> M-d M-d M-d
Thanks. Does the patch below give good results?
diff --git a/lisp/replace.el b/lisp/replace.el
index 45bd05d..a784388 100644
--- a/lisp/replace.el
+++ b/lisp/replace.el
@@ -1413,7 +1413,10 @@ occur-after-change-function
(length s1)))))
(prefix-len (funcall common-prefix buf-str text))
(suffix-len (funcall common-prefix
- (reverse buf-str) (reverse text))))
+ (reverse (substring
+ buf-str prefix-len))
+ (reverse (substring
+ text prefix-len)))))
(setq beg-pos (+ beg-pos prefix-len))
(setq end-pos (- end-pos suffix-len))
(setq text (substring text prefix-len (- suffix-len)))