[PATCH]: vcs_info git: Describe detached heads symbolically.

[Daniel Shahaf <d.s@daniel.shahaf.name>]

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A one-liner patch that makes the vcs_info prompt display symbolic names
in one more case.

Without this patch:
[[[
master ccc840470aa9
% git checkout $(git rev-parse HEAD)
                                                                                                                                       
ccc8404... ccc840470aa9
% 
]]]

With this patch:
[[[
master ccc840470aa9
% git checkout $(git rev-parse HEAD)
                                                                                                                                       
heads/master ccc840470aa9
% 
]]]

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>From 0aac472424ca671d2c2715eaac880684ad59c9d6 Mon Sep 17 00:00:00 2001
From: Daniel Shahaf <d.s@daniel.shahaf.name>
Date: Tue, 8 Apr 2014 21:07:28 +0000
Subject: [PATCH 3/3] vcs_info git: Describe detached heads symbolically.

This makes %b expand to a refname rather than a sha1 when HEAD is detached but
happens to match some ref (branch, tag, etc).  The resulting output will
typically contain a slash (e.g., "tags/v1.0.2", "heads/mybranch"), which helps
distinguish it from the output in the "HEAD is a symbolic ref" case.
---
 Functions/VCS_Info/Backends/VCS_INFO_get_data_git |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/Functions/VCS_Info/Backends/VCS_INFO_get_data_git b/Functions/VCS_Info/Backends/VCS_INFO_get_data_git
index 6512851..a48dc39 100644
--- a/Functions/VCS_Info/Backends/VCS_INFO_get_data_git
+++ b/Functions/VCS_Info/Backends/VCS_INFO_get_data_git
@@ -97,7 +97,7 @@ VCS_INFO_git_getbranch () {
         gitbranch="$(${(z)gitsymref} 2> /dev/null)"
 
         if [[ $? -ne 0 ]] ; then
-            gitbranch="refs/tags/$(${vcs_comm[cmd]} describe --exact-match HEAD 2>/dev/null)"
+            gitbranch="refs/tags/$(${vcs_comm[cmd]} describe --all --exact-match HEAD 2>/dev/null)"
 
             if [[ $? -ne 0 ]] ; then
                 gitbranch="${${"$(< $gitdir/HEAD)"}[1,7]}..."
-- 
1.7.10.4