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Date: Thu, 21 Nov 2013 18:13:19 -0500
From: Aaron Schrab <aaron@schrab.com>
To: Hong Xu <hong@topbug.net>
Cc: zsh-workers@zsh.org
Subject: Re:  vcs_info '%r' doesn't work properly when entered a subdirectory
 of a git repository through a symlink
Message-ID: <20131121231319.GA23989@pug.qqx.org>
Mail-Followup-To: Hong Xu <hong@topbug.net>, zsh-workers@zsh.org
References: <528D65C2.2080607@topbug.net>
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User-Agent: Mutt/1.5.22+36 (g7db327c) (2013-10-16)

At 17:45 -0800 20 Nov 2013, Hong Xu <hong@topbug.net> wrote:
>The vcs_info '%r' generally works perfect, but when I symlinked a 
>subdirectory of the root dir of the git repository to somewhere else, 
>and cd from the symlink, '%r' doesn't show the correct value, while the 
>git repository can be recognized by zsh.

This sounds like it may be the same issue that was addressed by the 
patch in workers:31985 (http://www.zsh.org/mla/workers/2013/msg01038.html),
sent by Clemens Hammacher.  It doesn't look like that patch has been 
applied to the git repository yet, but it looks like a good solution to 
me.

Since the patch is short, I'll include the content here:

diff --git a/Functions/VCS_Info/Backends/VCS_INFO_get_data_git 
b/Functions/VCS_Info/Backends/VCS_INFO_get_data_git
index c44be39..e6791cb 100644
--- a/Functions/VCS_Info/Backends/VCS_INFO_get_data_git
+++ b/Functions/VCS_Info/Backends/VCS_INFO_get_data_git
@@ -132,7 +132,7 @@ fi
 
 VCS_INFO_adjust
 VCS_INFO_git_getaction ${gitdir}
-gitbase=${PWD%/${$( ${vcs_comm[cmd]} rev-parse --show-prefix )%/##}}
+gitbase=$( ${vcs_comm[cmd]} rev-parse --show-toplevel )
 rrn=${gitbase:t}
 
 local patchdir=${gitdir}/patches/${gitbranch}

Does that fix the problem for you?