builtin-commit: do not color status output shown in the message template

Noticed by Ping Yin on the list.

Signed-off-by: Junio C Hamano <gitster@pobox.com>

builtin-commit.c

@@ -159,7 +159,7 @@ static const char sign_off_header[] = "Signed-off-by: ";
 static int prepare_log_message(const char *index_file, const char *prefix)
 {
 	struct stat statbuf;
-	int commitable;
+	int commitable, saved_color_setting;
 	struct strbuf sb;
 	char *buffer;
 	FILE *fp;
@@ -243,7 +243,10 @@ static int prepare_log_message(const char *index_file, const char *prefix)
 	if (only_include_assumed)
 		fprintf(fp, "# %s\n", only_include_assumed);
 
+	saved_color_setting = wt_status_use_color;
+	wt_status_use_color = 0;
 	commitable = run_status(fp, index_file, prefix);
+	wt_status_use_color = saved_color_setting;
 
 	fclose(fp);
 

wt-status.h

@@ -27,6 +27,7 @@ struct wt_status {
 };
 
 int git_status_config(const char *var, const char *value);
+int wt_status_use_color;
 void wt_status_prepare(struct wt_status *s);
 void wt_status_print(struct wt_status *s);