stred

commit 651a2650eb7d7471e0903b210a97ed1b15b6fe77
parent 44c5809b8c3af1be85d97673cc5a9585a65ef8f0
Author: Charlie Stanton <charlie@shtanton.xyz>
Date:   Thu, 20 Apr 2023 14:08:21 +0100

Fix bug that would crash if given an empty subex

Diffstat:
M
subex/parse.go
 | 
6
+++++-

1 file changed, 5 insertions(+), 1 deletion(-)
diff --git a/subex/parse.go b/subex/parse.go
@@ -356,5 +356,9 @@ func parseSubex(l RuneReader, minPower int) SubexAST {
 }
 
 func Parse(l RuneReader) SubexAST {
-	return parseSubex(l, 0)
+	ast := parseSubex(l, 0)
+	if ast == nil {
+		return SubexASTEmpty{}
+	}
+	return ast
 }