make git_diff_stats_to_buf not show 0 insertions or 0 deletions

1 files changed, 18 insertions, 10 deletions

diff --git a/src/diff_stats.c b/src/diff_stats.c
index 42ccbfb87..03dbccaed 100644
--- a/src/diff_stats.c
+++ b/src/diff_stats.c
@@ -299,15 +299,24 @@ int git_diff_stats_to_buf(
 	}
 
 	if (format & GIT_DIFF_STATS_FULL || format & GIT_DIFF_STATS_SHORT) {
-		error = git_buf_printf(
-			out, " %" PRIuZ " file%s changed, %" PRIuZ
-			" insertion%s(+), %" PRIuZ " deletion%s(-)\n",
-			stats->files_changed, stats->files_changed != 1 ? "s" : "",
-			stats->insertions, stats->insertions != 1 ? "s" : "",
-			stats->deletions, stats->deletions != 1 ? "s" : "");
-
-		if (error < 0)
-			return error;
+		git_buf_printf(
+			out, " %" PRIuZ " file%s changed",
+			stats->files_changed, stats->files_changed != 1 ? "s" : "");
+
+		if (stats->insertions || stats->deletions == 0)
+			git_buf_printf(
+				out, ", %" PRIuZ " insertion%s(+)",
+				stats->insertions, stats->insertions != 1 ? "s" : "");
+
+		if (stats->deletions || stats->insertions == 0)
+			git_buf_printf(
+				out, ", %" PRIuZ " deletion%s(-)",
+				stats->deletions, stats->deletions != 1 ? "s" : "");
+
+		git_buf_putc(out, '\n');
+
+		if (git_buf_oom(out))
+			return -1;
 	}
 
 	if (format & GIT_DIFF_STATS_INCLUDE_SUMMARY) {
@@ -333,4 +342,3 @@ void git_diff_stats_free(git_diff_stats *stats)
 	git__free(stats->filestats);
 	git__free(stats);
 }
-