GNU bug report logs - #28924
25.3; All hg entries on single line possibly due to typo in vc-hg-root-log-format.

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From: help-debbugs <at> gnu.org (GNU bug Tracking System)
To: Eli Zaretskii <eliz <at> gnu.org>
Cc: tracker <at> debbugs.gnu.org
Subject: bug#28924: closed (25.3; All hg entries on single line possibly
 due to typo in vc-hg-root-log-format.)
Date: Wed, 25 Oct 2017 14:48:02 +0000

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Your message dated Wed, 25 Oct 2017 17:46:50 +0300
with message-id <83mv4f8eud.fsf <at> gnu.org>
and subject line Re: bug#28924: 25.3; All hg entries on single line possibly due to typo in vc-hg-root-log-format.
has caused the debbugs.gnu.org bug report #28924,
regarding 25.3; All hg entries on single line possibly due to typo in vc-hg-root-log-format.
to be marked as done.

(If you believe you have received this mail in error, please contact
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From: gavenkoa <at> gmail.com
To: bug-gnu-emacs <at> gnu.org
Subject: 25.3; All hg entries on single line possibly due to typo in
 vc-hg-root-log-format.
Date: Sat, 21 Oct 2017 18:17:13 +0300

In GNU Emacs 25.3.1 (x86_64-w64-mingw32)
 of 2017-09-17 built on LAPHROAIG
Windowing system distributor 'Microsoft Corp.', version 10.0.15063

All changelog entries placed on one line on vc-print-root-log for HG with \n
symbols between entries.

When I changed:

 (defcustom vc-hg-root-log-format
   `(,(concat "{rev}:{ifeq(branch, 'default','', '{branch}')}"
              ":{bookmarks}:{tags}:{author|person}"
-             " {date|shortdate} {desc|firstline}\\n")
+             " {date|shortdate} {desc|firstline}\n")

it starts working fine.

I use hg.exe wrapper around Cygwin Python script hg, stripped version is:

  int main(int argc, char **argv) {
    execvp(cmd, argv);
  }

It comes after hg in PATH so execvp loads script instead itself.

-- 
http://defun.work/

[Message part 3 (message/rfc822, inline)]

From: Eli Zaretskii <eliz <at> gnu.org>
To: Oleksandr Gavenko <gavenkoa <at> gmail.com>
Cc: 28924-done <at> debbugs.gnu.org
Subject: Re: bug#28924: 25.3;
 All hg entries on single line possibly due to typo in
 vc-hg-root-log-format.
Date: Wed, 25 Oct 2017 17:46:50 +0300

> From: Oleksandr Gavenko <gavenkoa <at> gmail.com>
> Date: Wed, 25 Oct 2017 00:37:56 +0300
> Cc: 28924 <at> debbugs.gnu.org
> 
> Hi! I troubleshooted another issue recently and found that
> CYGWIN=noglob option cause problem when arguments passed from native
> Windows app (Emacs) to Cygwin app.
> 
> In our situation with my fix \n resolved to new line character code by
> Emacs and Cygwin is happy with it. With double slashes single one is
> passed (with "n") to Cygwin application and I see long:
> 
> 1544:::tip:Oleksandr Gavenko 2017-10-23 Make function silent if file
> is modified.\n1543::::Oleksandr Gavenko 2017-10-22 Prefer Python 3 for
> interactive shell.\n1542::::Oleksandr Gavenko 2017-10-21 Use UTF-8 on
> Windows fpr processes.\n1541::::Oleksandr Gavenko 2017-10-11 Set font
> size depending on DPI.\n1540::::Oleksandr Gavenko 2017-10-10 Mistaken
> s-TAB key binding broke my workflow.\n.......
> 
> That is native Emacs with Cygwin wrapper to Cygwin hg. It can be that
> no one on a planet works like that. I believe that people use native
> ports of HG/GIT/ag/ack/etc.

Thanks for telling us.

Since your situation is very special, and since vc-hg-root-log-format
is a defcustom, I think for you to customize the value to make it work
in your setup is exactly the right solution of this problem.  So I'm
closing this bug report, as I think nothing has to be done for it in
Emacs core.

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