strbuf_expand: convert "%%" to "%"

diff --git a/strbuf.c b/strbuf.c
index a6153dca278abe957254fa091fdcd8eb13b90b25..6cbc1fcfd86e45c85fda079f8bce8895adbcb3a4 100644 (file)
--- a/strbuf.c
+++ b/strbuf.c
@@ -227,6 +227,12 @@ void strbuf_expand(struct strbuf *sb, const char *format, expand_fn_t fn,
                        break;
                format = percent + 1;
 
+               if (*format == '%') {
+                       strbuf_addch(sb, '%');
+                       format++;
+                       continue;
+               }
+
                consumed = fn(sb, format, context);
                if (consumed)
                        format += consumed;