add tests for various blame formats

diff --git a/strbuf.c b/strbuf.c
index 77444a94df3d4a0cda6403957fd13ea262d3ab24..09c43ae59a7d4715c26f13d72ca37bc759d1c76d 100644 (file)
--- a/strbuf.c
+++ b/strbuf.c
@@ -30,8 +30,10 @@ void strbuf_init(struct strbuf *sb, size_t hint)
 {
        sb->alloc = sb->len = 0;
        sb->buf = strbuf_slopbuf;
-       if (hint)
+       if (hint) {
                strbuf_grow(sb, hint);
+               sb->buf[0] = '\0';
+       }
 }
 
 void strbuf_release(struct strbuf *sb)