Document git-show-ref [-s|--hash] option.

Signed-off-by: Christian Couder <chriscool@tuxfamily.org>
Signed-off-by: Junio C Hamano <junkio@cox.net>

diff --git a/Documentation/git-show-ref.txt b/Documentation/git-show-ref.txt
index 529ea17c90180f1dd4cbb7df463f0370d512d680..b724d832c8bef16c46bc7955cdbe7033d713e4a7 100644 (file)
--- a/Documentation/git-show-ref.txt
+++ b/Documentation/git-show-ref.txt
@@ -9,7 +9,7 @@ SYNOPSIS
 --------
 [verse]
 'git-show-ref' [-q|--quiet] [--verify] [-h|--head] [-d|--dereference]
-            [--tags] [--heads] [--] <pattern>...
+            [-s|--hash] [--tags] [--heads] [--] <pattern>...
 
 DESCRIPTION
 -----------
@@ -40,6 +40,12 @@ OPTIONS
        Dereference tags into object IDs. They will be shown with "^{}"
        appended.
 
+-s, --hash::
+
+       Only show the SHA1 hash, not the reference name. When also using
+       --dereference the dereferenced tag will still be shown after the SHA1,
+       this maybe a bug.
+
 --verify::
 
        Enable stricter reference checking by requiring an exact ref path.
@@ -72,6 +78,16 @@ $ git show-ref --head --dereference
 ...
 -----------------------------------------------------------------------------
 
+When using --hash (and not --dereference) the output format is: '<SHA-1 ID>'
+
+-----------------------------------------------------------------------------
+$ git show-ref --heads --hash
+2e3ba0114a1f52b47df29743d6915d056be13278
+185008ae97960c8d551adcd9e23565194651b5d1
+03adf42c988195b50e1a1935ba5fcbc39b2b029b
+...
+-----------------------------------------------------------------------------
+
 EXAMPLE
 -------