rev-parse --parseopt: allow [*=?!] in argument hints

diff --git a/strbuf.h b/strbuf.h
index 1883494ca3ad4931640c2a295c94800e287c1664..01c5c6371b8e43686f335704a67a59a1d82dbe3b 100644 (file)
--- a/strbuf.h
+++ b/strbuf.h
@@ -205,7 +205,8 @@ extern int strbuf_cmp(const struct strbuf *, const struct strbuf *);
  */
 static inline void strbuf_addch(struct strbuf *sb, int c)
 {
-       strbuf_grow(sb, 1);
+       if (!strbuf_avail(sb))
+               strbuf_grow(sb, 1);
        sb->buf[sb->len++] = c;
        sb->buf[sb->len] = '\0';
 }