diff --git a/util/jescape.c b/util/jescape.c index a2e8decb2c89832f3f04b596719911b672b6b7d9..467df728081dc64597dc9b2e2ae86a8185d7a4ea 100644 --- a/util/jescape.c +++ b/util/jescape.c @@ -29,8 +29,8 @@ char *jescape(char *s) case '\t': fputs("\\t", stream); break; default: - if (*s <= 0x1f) - fprintf(stream, "\\u%04x", *s); + if (*s <= 0x1f && *s >= 0) + fprintf(stream, "\\u%04hhx", *s); else fputc(*s, stream); }