reset: the command takes committish

This is not strictly correct, in that resetting selected index
entries from corresponding paths out of a given tree without moving
HEAD is a valid operation, and in such case a tree-ish would suffice.

But the existing code already requires a committish in the codepath,
so let's be consistent with it for now.

Signed-off-by: Junio C Hamano <gitster@pobox.com>

diff --git a/builtin/reset.c b/builtin/reset.c
index 8c2c1d52a227334a3d6456bf0989cd561628ffa0..392fb6361ea7bd8913cfe5efdcda4c2ff04efc75 100644 (file)
--- a/builtin/reset.c
+++ b/builtin/reset.c
@@ -276,7 +276,7 @@ int cmd_reset(int argc, const char **argv, const char *prefix)
                 * Otherwise, argv[i] could be either <rev> or <paths> and
                 * has to be unambiguous.
                 */
-               else if (!get_sha1(argv[i], sha1)) {
+               else if (!get_sha1_committish(argv[i], sha1)) {
                        /*
                         * Ok, argv[i] looks like a rev; it should not
                         * be a filename.
@@ -289,9 +289,15 @@ int cmd_reset(int argc, const char **argv, const char *prefix)
                }
        }
 
-       if (get_sha1(rev, sha1))
+       if (get_sha1_committish(rev, sha1))
                die(_("Failed to resolve '%s' as a valid ref."), rev);
 
+       /*
+        * NOTE: As "git reset $treeish -- $path" should be usable on
+        * any tree-ish, this is not strictly correct. We are not
+        * moving the HEAD to any commit; we are merely resetting the
+        * entries in the index to that of a treeish.
+        */
        commit = lookup_commit_reference(sha1);
        if (!commit)
                die(_("Could not parse object '%s'."), rev);

diff --git a/t/t1512-rev-parse-disambiguation.sh b/t/t1512-rev-parse-disambiguation.sh
index dc56f81cb7e90e68ba79fcedf57aafcefebfc0c6..02109988005f6451974d71bb2d264e74bc556723 100755 (executable)
--- a/t/t1512-rev-parse-disambiguation.sh
+++ b/t/t1512-rev-parse-disambiguation.sh
@@ -121,7 +121,7 @@ test_expect_success 'git log takes only commit-ish' '
        git log 000000000
 '
 
-test_expect_failure 'git reset takes only commit-ish' '
+test_expect_success 'git reset takes only commit-ish' '
        git reset 000000000
 '