In particular, show that --short and --porcelain, while implying
--dry-run, do not return the same exit code as --dry-run. This is due to
the wt_status.commitable flag being set only when a long status is
requested.

No fix is provided here; with [1], it should be trivial to fix though -
just a matter of calling wt_status_mark_commitable().

[1] http://article.gmane.org/gmane.comp.version-control.git/242489

Signed-off-by: Tay Ray Chuan <rcta...@gmail.com>
---
 t/t7501-commit.sh | 36 ++++++++++++++++++++++++++++++++++++
 1 file changed, 36 insertions(+)

diff --git a/t/t7501-commit.sh b/t/t7501-commit.sh
index 94eec83..d58b097 100755
--- a/t/t7501-commit.sh
+++ b/t/t7501-commit.sh
@@ -61,11 +61,47 @@ test_expect_success 'nothing to commit' '
        test_must_fail git commit -m initial
 '
 
+test_expect_success '--dry-run fails with nothing to commit' '
+       test_must_fail git commit -m initial --dry-run
+'
+
+test_expect_success '--short fails with nothing to commit' '
+       test_must_fail git commit -m initial --short
+'
+
+test_expect_success '--porcelain fails with nothing to commit' '
+       test_must_fail git commit -m initial --porcelain
+'
+
+test_expect_success '--long fails with nothing to commit' '
+       test_must_fail git commit -m initial --long
+'
+
 test_expect_success 'setup: non-initial commit' '
        echo bongo bongo bongo >file &&
        git commit -m next -a
 '
 
+test_expect_success '--dry-run with stuff to commit returns ok' '
+       echo bongo bongo bongo >>file &&
+       git commit -m next -a --dry-run
+'
+
+test_expect_failure '--short with stuff to commit returns ok' '
+       echo bongo bongo bongo >>file &&
+       git commit -m next -a --short
+'
+
+test_expect_failure '--porcelain with stuff to commit returns ok' '
+       echo bongo bongo bongo >>file &&
+       git commit -m next -a --porcelain
+'
+
+test_expect_success '--long with stuff to commit returns ok' '
+       echo bongo bongo bongo >>file &&
+       git commit -m next -a --long
+'
+
 test_expect_success 'commit message from non-existing file' '
        echo more bongo: bongo bongo bongo bongo >file &&
        test_must_fail git commit -F gah -a
-- 
1.9.0.291.g027825b

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