[PATCH 1/4] fmt-merge-msg: Make the number of log entries in commit message configurable

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Make the `merge.log` option either an integer or boolean instead of
just a boolean. The integer can be used to specify how many merged
commits to summarize (at maximum) in the merge message. Let true mean
20. Default to false.

Signed-off-by: Ramkumar Ramachandra <artagnon@xxxxxxxxx>
Reported-by: Yaroslav Halchenko <debian@xxxxxxxxxxxxxx>
Cc: Johannes Sixt <j.sixt@xxxxxxxxxxxxx>
Cc: Jonathan Nieder <jrnieder@xxxxxxxxx>
---
 builtin/fmt-merge-msg.c |   23 +++++++++++++++--------
 1 files changed, 15 insertions(+), 8 deletions(-)

diff --git a/builtin/fmt-merge-msg.c b/builtin/fmt-merge-msg.c
index e7e12ee..66b1cbd 100644
--- a/builtin/fmt-merge-msg.c
+++ b/builtin/fmt-merge-msg.c
@@ -12,16 +12,23 @@ static const char * const fmt_merge_msg_usage[] = {
 };
 
 static int merge_summary;
+static int log_limit = 0;
 
 static int fmt_merge_msg_config(const char *key, const char *value, void *cb)
 {
 	static int found_merge_log = 0;
+	int is_bool;
 	if (!strcmp("merge.log", key)) {
 		found_merge_log = 1;
-		merge_summary = git_config_bool(key, value);
+		log_limit = git_config_bool_or_int(key, value, &is_bool);
 	}
 	if (!found_merge_log && !strcmp("merge.summary", key))
-		merge_summary = git_config_bool(key, value);
+		log_limit = git_config_bool_or_int(key, value, &is_bool);
+
+	if (is_bool && log_limit)
+		log_limit = 20;
+	merge_summary = log_limit ? 1 : 0;
+
 	return 0;
 }
 
@@ -140,7 +147,7 @@ static void print_joined(const char *singular, const char *plural,
 }
 
 static void shortlog(const char *name, unsigned char *sha1,
-		struct commit *head, struct rev_info *rev, int limit,
+		struct commit *head, struct rev_info *rev,
 		struct strbuf *out)
 {
 	int i, count = 0;
@@ -169,7 +176,7 @@ static void shortlog(const char *name, unsigned char *sha1,
 			continue;
 
 		count++;
-		if (subjects.nr > limit)
+		if (subjects.nr > log_limit)
 			continue;
 
 		format_commit_message(commit, "%s", &sb, &ctx);
@@ -182,13 +189,13 @@ static void shortlog(const char *name, unsigned char *sha1,
 			string_list_append(&subjects, strbuf_detach(&sb, NULL));
 	}
 
-	if (count > limit)
+	if (count > log_limit)
 		strbuf_addf(out, "\n* %s: (%d commits)\n", name, count);
 	else
 		strbuf_addf(out, "\n* %s:\n", name);
 
 	for (i = 0; i < subjects.nr; i++)
-		if (i >= limit)
+		if (i >= log_limit)
 			strbuf_addf(out, "  ...\n");
 		else
 			strbuf_addf(out, "  %s\n", subjects.items[i].string);
@@ -257,7 +264,7 @@ static void do_fmt_merge_msg_title(struct strbuf *out,
 
 static int do_fmt_merge_msg(int merge_title, int merge_summary,
 	struct strbuf *in, struct strbuf *out) {
-	int limit = 20, i = 0, pos = 0;
+	int i = 0, pos = 0;
 	unsigned char head_sha1[20];
 	const char *current_branch;
 
@@ -303,7 +310,7 @@ static int do_fmt_merge_msg(int merge_title, int merge_summary,
 
 		for (i = 0; i < origins.nr; i++)
 			shortlog(origins.items[i].string, origins.items[i].util,
-					head, &rev, limit, out);
+					head, &rev, out);
 	}
 	return 0;
 }
-- 
1.7.1

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