Merge branch 'jc/maint-reset'

* jc/maint-reset:
  Allow "git-reset path" when unambiguous

diff --git a/builtin-reset.c b/builtin-reset.c
index f34acb1915a7bdbe41113febc90283bc94d0dc1f..a0321694c5c3d5798d28f8fe14493652e0dd0054 100644 (file)
--- a/builtin-reset.c
+++ b/builtin-reset.c
@@ -194,8 +194,40 @@ int cmd_reset(int argc, const char **argv, const char *prefix)
        reflog_action = args_to_str(argv);
        setenv("GIT_REFLOG_ACTION", reflog_action, 0);
 
-       if (i < argc && strcmp(argv[i], "--"))
-               rev = argv[i++];
+       /*
+        * Possible arguments are:
+        *
+        * git reset [-opts] <rev> <paths>...
+        * git reset [-opts] <rev> -- <paths>...
+        * git reset [-opts] -- <paths>...
+        * git reset [-opts] <paths>...
+        *
+        * At this point, argv[i] points immediately after [-opts].
+        */
+
+       if (i < argc) {
+               if (!strcmp(argv[i], "--")) {
+                       i++; /* reset to HEAD, possibly with paths */
+               } else if (i + 1 < argc && !strcmp(argv[i+1], "--")) {
+                       rev = argv[i];
+                       i += 2;
+               }
+               /*
+                * Otherwise, argv[i] could be either <rev> or <paths> and
+                * has to be unambigous.
+                */
+               else if (!get_sha1(argv[i], sha1)) {
+                       /*
+                        * Ok, argv[i] looks like a rev; it should not
+                        * be a filename.
+                        */
+                       verify_non_filename(prefix, argv[i]);
+                       rev = argv[i++];
+               } else {
+                       /* Otherwise we treat this as a filename */
+                       verify_filename(prefix, argv[i]);
+               }
+       }
 
        if (get_sha1(rev, sha1))
                die("Failed to resolve '%s' as a valid ref.", rev);
@@ -205,9 +237,6 @@ int cmd_reset(int argc, const char **argv, const char *prefix)
                die("Could not parse object '%s'.", rev);
        hashcpy(sha1, commit->object.sha1);
 
-       if (i < argc && !strcmp(argv[i], "--"))
-               i++;
-
        /* git reset tree [--] paths... can be used to
         * load chosen paths from the tree into the index without
         * affecting the working tree nor HEAD. */

diff --git a/t/t7102-reset.sh b/t/t7102-reset.sh
index 39ba14148c953d17589450917975372802eecfed..96d15083fb5ac540a0825b8c00dc43c8843a6dec 100755 (executable)
--- a/t/t7102-reset.sh
+++ b/t/t7102-reset.sh
@@ -428,4 +428,51 @@ test_expect_success '--mixed refreshes the index' '
        test_cmp expect output
 '
 
+test_expect_success 'disambiguation (1)' '
+
+       git reset --hard &&
+       >secondfile &&
+       git add secondfile &&
+       test_must_fail git reset secondfile &&
+       test -z "$(git diff --cached --name-only)" &&
+       test -f secondfile &&
+       test ! -s secondfile
+
+'
+
+test_expect_success 'disambiguation (2)' '
+
+       git reset --hard &&
+       >secondfile &&
+       git add secondfile &&
+       rm -f secondfile &&
+       test_must_fail git reset secondfile &&
+       test -n "$(git diff --cached --name-only -- secondfile)" &&
+       test ! -f secondfile
+
+'
+
+test_expect_success 'disambiguation (3)' '
+
+       git reset --hard &&
+       >secondfile &&
+       git add secondfile &&
+       rm -f secondfile &&
+       test_must_fail git reset HEAD secondfile &&
+       test -z "$(git diff --cached --name-only)" &&
+       test ! -f secondfile
+
+'
+
+test_expect_success 'disambiguation (4)' '
+
+       git reset --hard &&
+       >secondfile &&
+       git add secondfile &&
+       rm -f secondfile &&
+       test_must_fail git reset -- secondfile &&
+       test -z "$(git diff --cached --name-only)" &&
+       test ! -f secondfile
+'
+
 test_done