bug#73739: read-buffer-completion-ignore-case needs third possibility

bug#73739: read-buffer-completion-ignore-case needs third possibility

[Dan Jacobson]

   read-buffer-completion-ignore-case is a variable defined in ‘C source code’.
   Its value is t
   Original value was nil
   Non-nil means completion ignores case when reading a buffer name.

OK, but there should be a third mode, different than just non-nil, that
says that if the user has especially typed a capital letter (taken the
trouble to hold down the SHIFT keyboard key) then that should be
case sensitive. Else we see:

In this buffer, type RET to select the completion near point.
2 possible completions:                                                                    `
Makefile
maps.html
-UUU:%*- F1  *Completions*   All  L1     (Completion List) -
Switch to buffer (default maps.html): Ma<TAB>

bug#73739: read-buffer-completion-ignore-case needs third possibility

[Eli Zaretskii]

severity 73739 wishlist
thanks

> From: Dan Jacobson <jidanni@jidanni.org>
> Date: Fri, 11 Oct 2024 04:49:20 +0800
> 
>    read-buffer-completion-ignore-case is a variable defined in ‘C source code’.
>    Its value is t
>    Original value was nil
>    Non-nil means completion ignores case when reading a buffer name.
> 
> OK, but there should be a third mode, different than just non-nil, that
> says that if the user has especially typed a capital letter (taken the
> trouble to hold down the SHIFT keyboard key) then that should be
> case sensitive. Else we see:
> 
> In this buffer, type RET to select the completion near point.
> 2 possible completions:                                                                    `
> Makefile
> maps.html
> -UUU:%*- F1  *Completions*   All  L1     (Completion List) -
> Switch to buffer (default maps.html): Ma<TAB>

Patches to implement this new feature will be welcome, thanks.