[PATCH] notes: document behavior of --ref and --notes DWIMery

[Jacob Keller <jacob.e.keller@intel.com>]

From: Jacob Keller <jacob.keller@gmail.com>

The --notes and --ref parameter for selecting which notes ref to operate
on are based off of expand_notes_ref functionality. The documentation
mentioned that an unqualified ref argument would be taken as under
`refs/notes/`. However, this does not clearly indicate that
`refs/heads/master` will expand to `refs/notes/refs/heads/master`, so
document this behavior.

Add a further test for the expected behavior of git notes --ref
refs/heads/master get-ref as well, to ensure future patches do not break
this assumption.

Signed-off-by: Jacob Keller <jacob.keller@gmail.com>
---
 Documentation/git-notes.txt      | 4 +++-
 Documentation/pretty-options.txt | 5 +++--
 t/t3301-notes.sh                 | 6 ++++++
 3 files changed, 12 insertions(+), 3 deletions(-)

diff --git a/Documentation/git-notes.txt b/Documentation/git-notes.txt
index a9a916f360ec..2ed9c16a1aac 100644
--- a/Documentation/git-notes.txt
+++ b/Documentation/git-notes.txt
@@ -162,7 +162,9 @@ OPTIONS
 --ref <ref>::
 	Manipulate the notes tree in <ref>.  This overrides
 	'GIT_NOTES_REF' and the "core.notesRef" configuration.  The ref
-	is taken to be in `refs/notes/` if it is not qualified.
+	is taken to be in `refs/notes/` even if it is qualified under some
+	other location; in other words, `refs/heads/master` will be expanded
+	to `refs/notes/refs/heads/master`.
 
 --ignore-missing::
 	Do not consider it an error to request removing notes from an
diff --git a/Documentation/pretty-options.txt b/Documentation/pretty-options.txt
index 8d6c5cec4c5e..abcb787e7149 100644
--- a/Documentation/pretty-options.txt
+++ b/Documentation/pretty-options.txt
@@ -55,8 +55,9 @@ By default, the notes shown are from the notes refs listed in the
 environment overrides). See linkgit:git-config[1] for more details.
 +
 With an optional '<ref>' argument, show this notes ref instead of the
-default notes ref(s). The ref is taken to be in `refs/notes/` if it
-is not qualified.
+default notes ref(s). The ref is taken to be in `refs/notes/` even if it is
+qualified under some other location; in other words, `refs/heads/master`
+will be expanded to `refs/notes/refs/heads/master`.
 +
 Multiple --notes options can be combined to control which notes are
 being displayed. Examples: "--notes=foo" will show only notes from
diff --git a/t/t3301-notes.sh b/t/t3301-notes.sh
index 06b45847c147..2d200fdf36c6 100755
--- a/t/t3301-notes.sh
+++ b/t/t3301-notes.sh
@@ -1132,6 +1132,12 @@ test_expect_success 'git notes copy diagnoses too many or too few parameters' '
 	test_must_fail git notes copy one two three
 '
 
+test_expect_success 'git notes get-ref expands refs/heads/master to refs/notes/refs/heads/master' '
+	test_unconfig core.notesRef &&
+	sane_unset GIT_NOTES_REF &&
+	test "$(git notes --ref=refs/heads/master get-ref)" = "refs/notes/refs/heads/master"
+'
+
 test_expect_success 'git notes get-ref (no overrides)' '
 	test_unconfig core.notesRef &&
 	sane_unset GIT_NOTES_REF &&
-- 
2.6.0.rc3.238.gc07a1e8