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Subject: bug#67884: 30.0.50; fido-mode errors when case-fold-search is nil
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Hi,

If global case-fold-search is nil, fido-mode throws errors when typing 
upper case letters or on candidates with upper case letters.

Reproduce with: emacs -Q, then:

(fido-mode 1)
(toggle-case-fold-search)

;; then execute:
;; M-x <T or t or another pattern>

Which produces messages like:
 > Error in post-command-hook (icomplete-post-command-hook): (error 
"Internal error: \\`\\(.*?\\)T does not match cpp-parse-edit")
 > Error in post-command-hook (icomplete-post-command-hook): (error 
"Internal error: \\`\\(.*?\\)t does not match LaTeX-mode")

Many thanks!

--
In GNU Emacs 30.0.50 (build 1, x86_64-w64-mingw32) of 2023-12-18 built
  on <hostname>
Repository revision: 14504fca8b5589c5c80a69dcab6e02681b196fa1
Repository branch: master
Windowing system distributor 'Microsoft Corp.', version 10.0.19045
System Description: Microsoft Windows 10 Pro (v10.0.2009.19045.3803)

Configured using:
  'configure --with-tree-sitter --with-native-compilation=aot 'CFLAGS=-O2
  -gdwarf-4 -g3 -fno-optimize-sibling-calls''

Configured features:
ACL DBUS GIF GMP GNUTLS HARFBUZZ JPEG JSON LCMS2 LIBXML2 MODULES
NATIVE_COMP NOTIFY W32NOTIFY PDUMPER PNG RSVG SOUND SQLITE3 THREADS TIFF
TOOLKIT_SCROLL_BARS TREE_SITTER WEBP XPM ZLIB

Important settings:
   value of $LANG: en_US.UTF-8
   locale-coding-system: cp1252

Major mode: Messages

Minor modes in effect:
   icomplete-mode: t
   fido-mode: t
   tooltip-mode: t
   global-eldoc-mode: t
   show-paren-mode: t
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   tool-bar-mode: t
   menu-bar-mode: t
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   indent-tabs-mode: t
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   auto-encryption-mode: t
   auto-compression-mode: t

Load-path shadows:
None found.

Features:
(shadow sort mail-extr emacsbug message mailcap yank-media puny dired
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overlay sha1 md5 base64 format env code-pages mule custom widget keymap
hashtable-print-readable backquote threads w32notify dbusbind w32 lcms2
multi-tty move-toolbar make-network-process native-compile emacs)

Memory information:
((conses 16 92115 20642) (symbols 48 8077 0) (strings 32 24764 1710)
  (string-bytes 1 674338) (vectors 16 15840)
  (vector-slots 8 336906 18454) (floats 8 33 11936)
  (intervals 56 299 17) (buffers 992 14))

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From: help-debbugs@HIDDEN (GNU bug Tracking System)
To: parlando@HIDDEN
Subject: bug#67884: Acknowledgement (30.0.50; fido-mode errors when
 case-fold-search is nil)
Message-ID: <handler.67884.B.17029302539298.ack <at> debbugs.gnu.org>
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Reply-To: 67884 <at> debbugs.gnu.org
Date: Mon, 18 Dec 2023 20:11:01 +0000

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Subject: bug#67884: 30.0.50; fido-mode errors when case-fold-search is nil
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tags 67884 confirm
thanks

On Mon, Dec 18, 2023 at 8:11=E2=80=AFPM parlando--- via Bug reports for GNU
Emacs, the Swiss army knife of text editors <bug-gnu-emacs@HIDDEN>
wrote:
>
> Hi,
>
> If global case-fold-search is nil, fido-mode throws errors when typing
> upper case letters or on candidates with upper case letters.
>
> Reproduce with: emacs -Q, then:
>
> (fido-mode 1)
> (toggle-case-fold-search)
>
> ;; then execute:
> ;; M-x <T or t or another pattern>
>
> Which produces messages like:
>  > Error in post-command-hook (icomplete-post-command-hook): (error
> "Internal error: \\`\\(.*?\\)T does not match cpp-parse-edit")
>  > Error in post-command-hook (icomplete-post-command-hook): (error
> "Internal error: \\`\\(.*?\\)t does not match LaTeX-mode")

Thanks.  Reproduced.  I think the error specifically was due to
recent changes in Emacs master.  In Emacs 29, fido-mode doesn't
error, but doesn't respect case-fold-search either.

Jo=C3=A3o

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Subject: bug#67884: 30.0.50; fido-mode errors when case-fold-search is nil
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close 67884
thanks

On Tue, Dec 19, 2023 at 9:50=E2=80=AFAM Jo=C3=A3o T=C3=A1vora <joaotavora@g=
mail.com> wrote:

> Thanks.  Reproduced.  I think the error specifically was due to
> recent changes in Emacs master.

I fixed the recently introduced error in Emacs master (c0c79b0b4).

> In Emacs 29, fido-mode doesn't
> error, but doesn't respect case-fold-search either.

I may have mislead you to think there was also a problem in Emacs 29,
but there isn't.  Completion styles obey completion-ignore-case,
not case-fold-search directly.

Furthermore, while the flex completion style does obey it, fido-mode
(which is a "Fake Ido" extension) always sets completion-ignore-case
to t by default.  There are ways to get around it, admittedly
not very practical, but not terrible either.

  (defun joaot/minibuffer-setup-hook ()
    (setq-local completion-ignore-case nil))
  (add-hook 'minibuffer-setup-hook #'joaot/minibuffer-setup-hook t)

Jo=C3=A3o

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On 12/19/2023 11:14 AM, João Távora wrote:
> close 67884
> thanks
>
> On Tue, Dec 19, 2023 at 9:50 AM João Távora<joaotavora@HIDDEN>  wrote:
>
>> Thanks.  Reproduced.  I think the error specifically was due to
>> recent changes in Emacs master.
> I fixed the recently introduced error in Emacs master (c0c79b0b4).
>
>> In Emacs 29, fido-mode doesn't
>> error, but doesn't respect case-fold-search either.
> I may have mislead you to think there was also a problem in Emacs 29,
> but there isn't.  Completion styles obey completion-ignore-case,
> not case-fold-search directly.
>
> Furthermore, while the flex completion style does obey it, fido-mode
> (which is a "Fake Ido" extension) always sets completion-ignore-case
> to t by default.  There are ways to get around it, admittedly
> not very practical, but not terrible either.
>
>    (defun joaot/minibuffer-setup-hook ()
>      (setq-local completion-ignore-case nil))
>    (add-hook 'minibuffer-setup-hook #'joaot/minibuffer-setup-hook t)
>
> João


Nice. Anyway, for me ignore case in minibuffer is the most suitable 
method, and maybe for most people too.

--------------mrSYXMUTVBPlB96VJgd5ZWgE
Content-Type: text/html; charset=UTF-8
Content-Transfer-Encoding: 8bit

<!DOCTYPE html>
<html>
  <head>
    <meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
  </head>
  <body>
    On 12/19/2023 11:14 AM, João Távora wrote:<br>
    <blockquote type="cite"
cite="mid:CALDnm52PTVmTrKii0VwVvpKjjZXL2XLx5_MDDSN5bMhCXPoKbA@HIDDEN">
      <pre class="moz-quote-pre" wrap="">close 67884
thanks

On Tue, Dec 19, 2023 at 9:50 AM João Távora <a class="moz-txt-link-rfc2396E" href="mailto:joaotavora@HIDDEN">&lt;joaotavora@HIDDEN&gt;</a> wrote:

</pre>
      <blockquote type="cite">
        <pre class="moz-quote-pre" wrap="">Thanks.  Reproduced.  I think the error specifically was due to
recent changes in Emacs master.
</pre>
      </blockquote>
      <pre class="moz-quote-pre" wrap="">
I fixed the recently introduced error in Emacs master (c0c79b0b4).

</pre>
      <blockquote type="cite">
        <pre class="moz-quote-pre" wrap="">In Emacs 29, fido-mode doesn't
error, but doesn't respect case-fold-search either.
</pre>
      </blockquote>
      <pre class="moz-quote-pre" wrap="">
I may have mislead you to think there was also a problem in Emacs 29,
but there isn't.  Completion styles obey completion-ignore-case,
not case-fold-search directly.

Furthermore, while the flex completion style does obey it, fido-mode
(which is a "Fake Ido" extension) always sets completion-ignore-case
to t by default.  There are ways to get around it, admittedly
not very practical, but not terrible either.

  (defun joaot/minibuffer-setup-hook ()
    (setq-local completion-ignore-case nil))
  (add-hook 'minibuffer-setup-hook #'joaot/minibuffer-setup-hook t)

João</pre>
    </blockquote>
    <p><br>
    </p>
    <p><span style="white-space: pre-wrap">Nice. Anyway, for me ignore case in minibuffer is the most suitable method, and maybe for most people too.</span></p>
    <p><span style="white-space: pre-wrap">
</span></p>
  </body>
</html>

--------------mrSYXMUTVBPlB96VJgd5ZWgE--

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