1 files changed, 6 insertions, 0 deletions
diff --git a/quote.c b/quote.c
index c8ba6b3..24a58ba 100644
--- a/quote.c
+++ b/quote.c
@@ -48,6 +48,12 @@ void sq_quote_buf_pretty(struct strbuf *dst, const char *src)
 	static const char ok_punct[] = "+,-./:=@_^";
 	const char *p;
 
+	/* Avoid losing a zero-length string by adding '' */
+	if (!*src) {
+		strbuf_addstr(dst, "''");
+		return;
+	}
+
 	for (p = src; *p; p++) {
 		if (!isalpha(*p) && !isdigit(*p) && !strchr(ok_punct, *p)) {
 			sq_quote_buf(dst, src);