git-log -g --pretty=oneline should display the reflog message

In the context of reflog output the reflog message is more useful than
the commit message's first line.  When relevant the reflog message
will contain that line anyway.
Signed-off-by: NNicolas Pitre <nico@cam.org>
Signed-off-by: NJunio C Hamano <junkio@cox.net>

log-tree.c

@@ -224,9 +224,14 @@ void show_log(struct rev_info *opt, const char *sep)
 		printf("%s",
 		       diff_get_color(opt->diffopt.color_diff, DIFF_RESET));
 		putchar(opt->commit_format == CMIT_FMT_ONELINE ? ' ' : '\n');
-		if (opt->reflog_info)
+		if (opt->reflog_info) {
 			show_reflog_message(opt->reflog_info,
 				    opt->commit_format == CMIT_FMT_ONELINE);;
+			if (opt->commit_format == CMIT_FMT_ONELINE) {
+				printf("%s", sep);
+				return;
+			}
+		}
 	}
 
 	/*

reflog-walk.c

@@ -233,7 +233,7 @@ void show_reflog_message(struct reflog_walk_info* info, int oneline)
 			else
 				printf("%d", commit_reflog->reflogs->nr
 				       - 2 - commit_reflog->recno);
-			printf("}: ");
+			printf("}: %s", info->message);
 		}
 		else {
 			printf("Reflog: %s@{", commit_reflog->reflogs->ref);