[PATCH 02/10] cmd_merge: convert to single exit point

["Nguyễn Thái Ngọc Duy" <pclouds@gmail.com>]

This makes post-processing easier.

Signed-off-by: Nguyễn Thái Ngọc Duy <pclouds@gmail.com>
---
 builtin/merge.c |   48 +++++++++++++++++++++++++++++-------------------
 1 files changed, 29 insertions(+), 19 deletions(-)

diff --git a/builtin/merge.c b/builtin/merge.c
index d9c7a80..1be6f3b 100644
--- a/builtin/merge.c
+++ b/builtin/merge.c
@@ -1082,7 +1082,7 @@ int cmd_merge(int argc, const char **argv, const char *prefix)
 	struct commit *head_commit;
 	struct strbuf buf = STRBUF_INIT;
 	const char *head_arg;
-	int flag, i;
+	int flag, i, ret = 0;
 	int best_cnt = -1, merge_was_ok = 0, automerge_was_ok = 0;
 	struct commit_list *common = NULL;
 	const char *best_strategy = NULL, *wt_strategy = NULL;
@@ -1121,7 +1121,8 @@ int cmd_merge(int argc, const char **argv, const char *prefix)
 			die(_("There is no merge to abort (MERGE_HEAD missing)."));
 
 		/* Invoke 'git reset --merge' */
-		return cmd_reset(nargc, nargv, prefix);
+		ret = cmd_reset(nargc, nargv, prefix);
+		goto done;
 	}
 
 	if (read_cache_unmerged())
@@ -1205,7 +1206,7 @@ int cmd_merge(int argc, const char **argv, const char *prefix)
 		read_empty(remote_head->sha1, 0);
 		update_ref("initial pull", "HEAD", remote_head->sha1, NULL, 0,
 				DIE_ON_ERR);
-		return 0;
+		goto done;
 	} else {
 		struct strbuf merge_names = STRBUF_INIT;
 
@@ -1292,7 +1293,7 @@ int cmd_merge(int argc, const char **argv, const char *prefix)
 		 * but first the most common case of merging one remote.
 		 */
 		finish_up_to_date("Already up-to-date.");
-		return 0;
+		goto done;
 	} else if (allow_fast_forward && !remoteheads->next &&
 			!common->next &&
 			!hashcmp(common->item->object.sha1, head_commit->object.sha1)) {
@@ -1313,15 +1314,16 @@ int cmd_merge(int argc, const char **argv, const char *prefix)
 			strbuf_addstr(&msg,
 				" (no commit created; -m option ignored)");
 		o = want_commit(sha1_to_hex(remoteheads->item->object.sha1));
-		if (!o)
-			return 1;
-
-		if (checkout_fast_forward(head_commit->object.sha1, remoteheads->item->object.sha1))
-			return 1;
+		if (!o ||
+		    checkout_fast_forward(head_commit->object.sha1,
+					  remoteheads->item->object.sha1)) {
+			ret = 1;
+			goto done;
+		}
 
 		finish(head_commit, o->sha1, msg.buf);
 		drop_save();
-		return 0;
+		goto done;
 	} else if (!remoteheads->next && common->next)
 		;
 		/*
@@ -1339,8 +1341,11 @@ int cmd_merge(int argc, const char **argv, const char *prefix)
 			git_committer_info(IDENT_ERROR_ON_NO_NAME);
 			printf(_("Trying really trivial in-index merge...\n"));
 			if (!read_tree_trivial(common->item->object.sha1,
-					head_commit->object.sha1, remoteheads->item->object.sha1))
-				return merge_trivial(head_commit);
+					       head_commit->object.sha1,
+					       remoteheads->item->object.sha1)) {
+				ret = merge_trivial(head_commit);
+				goto done;
+			}
 			printf(_("Nope.\n"));
 		}
 	} else {
@@ -1368,7 +1373,7 @@ int cmd_merge(int argc, const char **argv, const char *prefix)
 		}
 		if (up_to_date) {
 			finish_up_to_date("Already up-to-date. Yeeah!");
-			return 0;
+			goto done;
 		}
 	}
 
@@ -1450,9 +1455,11 @@ int cmd_merge(int argc, const char **argv, const char *prefix)
 	 * If we have a resulting tree, that means the strategy module
 	 * auto resolved the merge cleanly.
 	 */
-	if (automerge_was_ok)
-		return finish_automerge(head_commit, common, result_tree,
-					wt_strategy);
+	if (automerge_was_ok) {
+		ret = finish_automerge(head_commit, common, result_tree,
+				       wt_strategy);
+		goto done;
+	}
 
 	/*
 	 * Pick the result from the best strategy and have the user fix
@@ -1466,7 +1473,8 @@ int cmd_merge(int argc, const char **argv, const char *prefix)
 		else
 			fprintf(stderr, _("Merge with strategy %s failed.\n"),
 				use_strategies[0]->name);
-		return 2;
+		ret = 2;
+		goto done;
 	} else if (best_strategy == wt_strategy)
 		; /* We already have its result in the working tree. */
 	else {
@@ -1485,7 +1493,9 @@ int cmd_merge(int argc, const char **argv, const char *prefix)
 	if (merge_was_ok) {
 		fprintf(stderr, _("Automatic merge went well; "
 			"stopped before committing as requested\n"));
-		return 0;
 	} else
-		return suggest_conflicts(option_renormalize);
+		ret = suggest_conflicts(option_renormalize);
+
+done:
+	return ret;
 }
-- 
1.7.4.74.g639db