GNU bug report logs - #61479
28.2; icomplete-in-buffer --- Error in post-command-hook: args-out-of-range

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From: Juri Linkov <juri <at> linkov.net>
To: Fernando de Morais <fernandodemorais.jf <at> gmail.com>
Cc: 61479 <at> debbugs.gnu.org
Subject: bug#61479: 28.2; icomplete-in-buffer --- Error in post-command-hook: args-out-of-range
Date: Thu, 16 Feb 2023 20:29:15 +0200

>> Does it also select a completion candidate?
>
> Well, when I hit C-j, it selects the candidate, but then:
>
>   - The buffer is modified in a way that only the selected candidate is
>     visible;
>   - The same is true for multiple C-M-i when in the candidate list;
>   - I need to use `undo' to go back to the previous state of the buffer.

Here is a short patch that completely fixes this problem.
But probably it's too late for the release branch
since icomplete never worked correctly in the buffer.

diff --git a/lisp/icomplete.el b/lisp/icomplete.el
index f7a91599f3b..aadc2e32787 100644
--- a/lisp/icomplete.el
+++ b/lisp/icomplete.el
@@ -215,7 +215,11 @@ icomplete-force-complete-and-exit
        ;; calculated, This causes the first cached completion to
        ;; be taken (i.e. the one that the user sees highlighted)
        completion-all-sorted-completions)
-      (minibuffer-force-complete-and-exit)
+      (if (window-minibuffer-p)
+          (minibuffer-force-complete-and-exit)
+        (minibuffer-force-complete (icomplete--field-beg)
+                                   (icomplete--field-end)
+                                   'dont-cycle))
     ;; Otherwise take the faster route...
     (minibuffer-complete-and-exit)))
 

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