bug#3836: (file-exists-p "//.gz") needs seven seconds

bug#3836: (file-exists-p "//.gz") needs seven seconds

[Christoph Conrad]

Hi,

1) emacs -Q
2) M-: (file-exists-p "//.gz") <RET>

On my computer this needs several seconds to come back. The file does
NOT exist.

If i am in cc-mode and a lione starts with "/// " and i press "ctrl-x
ctrl-f" using ffap then this needs over ten seconds to return, cause
emacs tries to determine if there are files named "//.gz" or "//.Z".

In GNU Emacs 22.3.1 (i386-mingw-nt5.1.2600)
 of 2008-09-06 on SOFT-MJASON
Windowing system distributor `Microsoft Corp.', version 5.1.2600
configured using `configure --with-gcc (3.4)'

Important settings:
  value of $LC_ALL: nil
  value of $LC_COLLATE: nil
  value of $LC_CTYPE: nil
  value of $LC_MESSAGES: nil
  value of $LC_MONETARY: nil
  value of $LC_NUMERIC: nil
  value of $LC_TIME: nil
  value of $LANG: DEU
  locale-coding-system: cp1252
  default-enable-multibyte-characters: t

bug#3836: marked as done ((file-exists-p "//.gz") needs seven seconds)

[Emacs bug Tracking System]

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Your message dated Mon, 13 Jul 2009 21:59:15 +0300
with message-id <83zlb8quik.fsf@gnu.org>
and subject line Re: bug#3836: (file-exists-p "//.gz") needs seven seconds
has caused the Emacs bug report #3836,
regarding (file-exists-p "//.gz") needs seven seconds
to be marked as done.

This means that you claim that the problem has been dealt with.
If this is not the case it is now your responsibility to reopen the
bug report if necessary, and/or fix the problem forthwith.

(NB: If you are a system administrator and have no idea what this
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-- 
3836: http://emacsbugs.donarmstrong.com/cgi-bin/bugreport.cgi?bug=3836
Emacs Bug Tracking System
Contact owner@emacsbugs.donarmstrong.com with problems

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From: "Christoph Conrad" <christoph.conrad@gmx.de>
To: bug-gnu-emacs@gnu.org
Cc: christoph.conrad@gmx.de
Subject: (file-exists-p "//.gz") needs seven seconds
Date: Mon, 13 Jul 2009 15:03:04 +0200
Message-ID: <uprc4k9xf.fsf@ID-24456.user.uni-berlin.de>

Hi,

1) emacs -Q
2) M-: (file-exists-p "//.gz") <RET>

On my computer this needs several seconds to come back. The file does
NOT exist.

If i am in cc-mode and a lione starts with "/// " and i press "ctrl-x
ctrl-f" using ffap then this needs over ten seconds to return, cause
emacs tries to determine if there are files named "//.gz" or "//.Z".

In GNU Emacs 22.3.1 (i386-mingw-nt5.1.2600)
 of 2008-09-06 on SOFT-MJASON
Windowing system distributor `Microsoft Corp.', version 5.1.2600
configured using `configure --with-gcc (3.4)'

Important settings:
  value of $LC_ALL: nil
  value of $LC_COLLATE: nil
  value of $LC_CTYPE: nil
  value of $LC_MESSAGES: nil
  value of $LC_MONETARY: nil
  value of $LC_NUMERIC: nil
  value of $LC_TIME: nil
  value of $LANG: DEU
  locale-coding-system: cp1252
  default-enable-multibyte-characters: t



[-- Attachment #3: Type: message/rfc822, Size: 2096 bytes --]

From: Eli Zaretskii <eliz@gnu.org>
To: Christoph Conrad <christoph.conrad@gmx.de>, 3836-done@emacsbugs.donarmstrong.com
Subject: Re: bug#3836: (file-exists-p "//.gz") needs seven seconds
Date: Mon, 13 Jul 2009 21:59:15 +0300
Message-ID: <83zlb8quik.fsf@gnu.org>

> From: "Christoph Conrad" <christoph.conrad@gmx.de>
> Date: Mon, 13 Jul 2009 15:03:04 +0200
> Cc: christoph.conrad@gmx.de
> 
> 1) emacs -Q
> 2) M-: (file-exists-p "//.gz") <RET>
> 
> On my computer this needs several seconds to come back. The file does
> NOT exist.

That's not an Emacs problem: a file whose name begins with two slashes
or two backslashes is a UNC-style file name, and your Windows computer
looks it up on the network.  That eventually times out, but can take a
lot of time until it does.

I'm closing this bug report.