bug#81635: 32.0.50; Change in TAB cycling *Completions* and minibuffer

On Thu, 20 Aug 2026 13:50:48 -0400 Spencer Baugh <[email protected]> wrote:

> Stephen Berman <[email protected]> writes:
>> When `completion-auto-select' is set to t and `completion-auto-wrap' is
>> also t (the default), then TAB and S-TAB cycle through the *Completions*
>> buffer and after the last (resp. first) completion candidate switches to
>> the minibuffer.  In Emacs 30 typing TAB in the minibuffer continues the
>> cycling, i.e., TAB continues with the first candidate, S-TAB with the
>> last.  This behavior changed with commit 5b19ca56f1d9 (bug#74019): since
>> then TAB in the minibuffer returns to the last candidate and S-TAB
>> returns to the first, and further TABs or S-TABs just bounce back and
>> forth between that candidate and the minibuffer rather than cycling
>> through *Completions*.  That is, after returning to *Completions* from
>> the minibuffer you have to switch from TAB to S-TAB or vice versa in
>> order to resume cycling through *Completions*.  This change in behavior
>> seems like unintended fallout from commit 5b19ca56f1d9.  The attached
>> patch restores the previous cyclic behavior.  I've added Spencer Baugh
>> (the author of that commit) and Stefan Monnier in Cc:, in case they have
>> any comments.
>
> Thanks for the detailed report.  This should fix it, and includes a
> test.

Yes, this also restores the cyclic behavior, thanks.  Eli and Sean,
since this fixes a regression in Emacs 31, can it be installed in the
release branch?

Steve Berman