replay: add replay.refAction config option

Add a configuration variable to control the default behavior of git replay
for updating references. This allows users who prefer the traditional
pipeline output to set it once in their config instead of passing
--ref-action=print with every command.

The config variable uses string values that mirror the behavior modes:
  * replay.refAction = update (default): atomic ref updates
  * replay.refAction = print: output commands for pipeline

Helped-by: Junio C Hamano <gitster@pobox.com>
Helped-by: Elijah Newren <newren@gmail.com>
Helped-by: Christian Couder <christian.couder@gmail.com>
Helped-by: Phillip Wood <phillip.wood123@gmail.com>
Signed-off-by: Siddharth Asthana <siddharthasthana31@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>

1 files changed, 20 insertions, 4 deletions

diff --git a/builtin/replay.c b/builtin/replay.c
index 94e60b5b10..6606a2c94b 100644
--- a/builtin/replay.c
+++ b/builtin/replay.c
@@ -8,6 +8,7 @@
 #include "git-compat-util.h"
 
 #include "builtin.h"
+#include "config.h"
 #include "environment.h"
 #include "hex.h"
 #include "lockfile.h"
@@ -298,6 +299,22 @@ static enum ref_action_mode parse_ref_action_mode(const char *ref_action, const
 	die(_("invalid %s value: '%s'"), source, ref_action);
 }
 
+static enum ref_action_mode get_ref_action_mode(struct repository *repo, const char *ref_action)
+{
+	const char *config_value = NULL;
+
+	/* Command line option takes precedence */
+	if (ref_action)
+		return parse_ref_action_mode(ref_action, "--ref-action");
+
+	/* Check config value */
+	if (!repo_config_get_string_tmp(repo, "replay.refAction", &config_value))
+		return parse_ref_action_mode(config_value, "replay.refAction");
+
+	/* Default to update mode */
+	return REF_ACTION_UPDATE;
+}
+
 static int handle_ref_update(enum ref_action_mode mode,
 			     struct ref_transaction *transaction,
 			     const char *refname,
@@ -332,7 +349,7 @@ int cmd_replay(int argc,
 	const char *onto_name = NULL;
 	int contained = 0;
 	const char *ref_action = NULL;
-	enum ref_action_mode ref_mode = REF_ACTION_UPDATE;
+	enum ref_action_mode ref_mode;
 
 	struct rev_info revs;
 	struct commit *last_commit = NULL;
@@ -378,9 +395,8 @@ int cmd_replay(int argc,
 	die_for_incompatible_opt2(!!advance_name_opt, "--advance",
 				  contained, "--contained");
 
-	/* Parse ref action mode */
-	if (ref_action)
-		ref_mode = parse_ref_action_mode(ref_action, "--ref-action");
+	/* Parse ref action mode from command line or config */
+	ref_mode = get_ref_action_mode(repo, ref_action);
 
 	advance_name = xstrdup_or_null(advance_name_opt);