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Re: Emacs 26.1 on Windows is HUGE

From: Phillip Lord
Subject: Re: Emacs 26.1 on Windows is HUGE
Date: Tue, 30 Apr 2019 22:13:57 +0100
User-agent: Gnus/5.13 (Gnus v5.13) Emacs/26.2 (gnu/linux)

Eli Zaretskii <> writes:

>> From: Óscar Fuentes <>
>> Date: Tue, 30 Apr 2019 17:35:45 +0200
>> Eli Zaretskii <> writes:
>> >> I will have a poke around and see if I can find out where this is set
>> >> for msys.
>> >
>> > Regardless, I think this should be reported to MSYS, because they need
>> > to fix it.
> Wow, 4 years!
> I think they should be told about the trailing colon feature, maybe
> that will help them fix the problem.  Or not.

Or not, am afraid.

The fix is very simple. INFOPATH is set in /etc/profile.

But, Emacs will ignore the final colon regardless. The code is
below. The problem is we match against path-separator which is ";" not
":", so we never do the `append'.

(defun info-initialize ()
  "Initialize `Info-directory-list', if that hasn't been done yet."
  (unless Info-directory-list
    (let ((path (getenv "INFOPATH"))
          (sep (regexp-quote path-separator)))
      (setq Info-directory-list
             (if path
                 (if (string-match-p (concat sep "\\'") path)
                     (append (split-string (substring path 0 -1) sep)
                   (split-string path sep))

This follows the info documentation which says:

  However you set INFOPATH, if its last character is a colon (on
  MS-DOS/MS-Windows systems, use a semicolon instead), this is replaced
  by the default (compiled-in) path. This gives you a way to augment the
  default path with new directories without having to list all the
  standard places.

Both Emacs and the Info documentation are wrong, I think, since they
assume the path seperator for environment variables on MS-Windows
systems in ";" which isn't true in general.


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