Introduce CHERRY_PICK_HEAD

diff --git a/builtin/merge.c b/builtin/merge.c
index c24a7be020d10540581b41c21a2ecf83df5563d9..5ba2efc21439b3150f3c46552fea10a0922773e1 100644 (file)
--- a/builtin/merge.c
+++ b/builtin/merge.c
@@ -57,6 +57,7 @@ static const char *branch;
 static int option_renormalize;
 static int verbosity;
 static int allow_rerere_auto;
+static int abort_current_merge;
 
 static struct strategy all_strategy[] = {
        { "recursive",  DEFAULT_TWOHEAD | NO_TRIVIAL },
@@ -197,6 +198,8 @@ static struct option builtin_merge_options[] = {
                "message to be used for the merge commit (if any)",
                option_parse_message),
        OPT__VERBOSITY(&verbosity),
+       OPT_BOOLEAN(0, "abort", &abort_current_merge,
+               "abort the current in-progress merge"),
        OPT_END()
 };
 
@@ -919,22 +922,9 @@ int cmd_merge(int argc, const char **argv, const char *prefix)
        const char *best_strategy = NULL, *wt_strategy = NULL;
        struct commit_list **remotes = &remoteheads;
 
-       if (read_cache_unmerged()) {
-               die_resolve_conflict("merge");
-       }
-       if (file_exists(git_path("MERGE_HEAD"))) {
-               /*
-                * There is no unmerged entry, don't advise 'git
-                * add/rm <file>', just 'git commit'.
-                */
-               if (advice_resolve_conflict)
-                       die("You have not concluded your merge (MERGE_HEAD exists).\n"
-                           "Please, commit your changes before you can merge.");
-               else
-                       die("You have not concluded your merge (MERGE_HEAD exists).");
-       }
+       if (argc == 2 && !strcmp(argv[1], "-h"))
+               usage_with_options(builtin_merge_usage, builtin_merge_options);
 
-       resolve_undo_clear();
        /*
         * Check if we are _not_ on a detached HEAD, i.e. if there is a
         * current branch.
@@ -953,6 +943,41 @@ int cmd_merge(int argc, const char **argv, const char *prefix)
 
        argc = parse_options(argc, argv, prefix, builtin_merge_options,
                        builtin_merge_usage, 0);
+
+       if (abort_current_merge) {
+               int nargc = 2;
+               const char *nargv[] = {"reset", "--merge", NULL};
+
+               if (!file_exists(git_path("MERGE_HEAD")))
+                       die("There is no merge to abort (MERGE_HEAD missing).");
+
+               /* Invoke 'git reset --merge' */
+               return cmd_reset(nargc, nargv, prefix);
+       }
+
+       if (read_cache_unmerged())
+               die_resolve_conflict("merge");
+
+       if (file_exists(git_path("MERGE_HEAD"))) {
+               /*
+                * There is no unmerged entry, don't advise 'git
+                * add/rm <file>', just 'git commit'.
+                */
+               if (advice_resolve_conflict)
+                       die("You have not concluded your merge (MERGE_HEAD exists).\n"
+                           "Please, commit your changes before you can merge.");
+               else
+                       die("You have not concluded your merge (MERGE_HEAD exists).");
+       }
+       if (file_exists(git_path("CHERRY_PICK_HEAD"))) {
+               if (advice_resolve_conflict)
+                       die("You have not concluded your cherry-pick (CHERRY_PICK_HEAD exists).\n"
+                           "Please, commit your changes before you can merge.");
+               else
+                       die("You have not concluded your cherry-pick (CHERRY_PICK_HEAD exists).");
+       }
+       resolve_undo_clear();
+
        if (verbosity < 0)
                show_diffstat = 0;