The docs seem to say that doing

        git show-ref --head --tags

would show both the HEAD ref and all the tag refs. However, doing
both --head and either of --tags or --heads would filter out the HEAD
ref.

Also update the documentation to describe the new behavior.

Signed-off-by: Doug Bell <madcity...@gmail.com>
---
 Documentation/git-show-ref.txt | 10 ++++++----
 builtin/show-ref.c             |  8 ++++++--
 2 files changed, 12 insertions(+), 6 deletions(-)

diff --git a/Documentation/git-show-ref.txt b/Documentation/git-show-ref.txt
index de4d352..b0a309b 100644
--- a/Documentation/git-show-ref.txt
+++ b/Documentation/git-show-ref.txt
@@ -21,6 +21,8 @@ commit IDs. Results can be filtered using a pattern and tags 
can be
 dereferenced into object IDs. Additionally, it can be used to test whether a
 particular ref exists.
 
+By default, shows the tags, heads, and remote refs.
+
 The --exclude-existing form is a filter that does the inverse, it shows the
 refs from stdin that don't exist in the local repository.
 
@@ -32,14 +34,14 @@ OPTIONS
 
 --head::
 
-       Show the HEAD reference.
+       Show the HEAD reference, even if it would normally be filtered out.
 
 --tags::
 --heads::
 
-       Limit to only "refs/heads" and "refs/tags", respectively.  These
-       options are not mutually exclusive; when given both, references stored
-       in "refs/heads" and "refs/tags" are displayed.
+       Limit to "refs/heads" and "refs/tags", respectively.  These options
+       are not mutually exclusive; when given both, references stored in
+       "refs/heads" and "refs/tags" are displayed.
 
 -d::
 --dereference::
diff --git a/builtin/show-ref.c b/builtin/show-ref.c
index 4a0310d..4b069e7 100644
--- a/builtin/show-ref.c
+++ b/builtin/show-ref.c
@@ -31,6 +31,9 @@ static int show_ref(const char *refname, const unsigned char 
*sha1, int flag, vo
        const char *hex;
        unsigned char peeled[20];
 
+       if (show_head && !strncmp(refname, "HEAD\0", 5))
+               goto match;
+
        if (tags_only || heads_only) {
                int match;
 
@@ -167,9 +170,10 @@ static const struct option show_ref_options[] = {
        OPT_BOOLEAN(0, "verify", &verify, N_("stricter reference checking, "
                    "requires exact ref path")),
        { OPTION_BOOLEAN, 'h', NULL, &show_head, NULL,
-         N_("show the HEAD reference"),
+         N_("show the HEAD reference, even if it would be filtered out"),
          PARSE_OPT_NOARG | PARSE_OPT_HIDDEN },
-       OPT_BOOLEAN(0, "head", &show_head, N_("show the HEAD reference")),
+       OPT_BOOLEAN(0, "head", &show_head,
+         N_("show the HEAD reference, even if it would be filtered out")),
        OPT_BOOLEAN('d', "dereference", &deref_tags,
                    N_("dereference tags into object IDs")),
        { OPTION_CALLBACK, 's', "hash", &abbrev, N_("n"),
-- 
1.7.12.4

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