bskyweb: fix post text expansion (#6016)

Co-authored-by: Hailey <me@haileyok.com>
2024-10-31 17:24:56 -04:00
parent aa6aad652e
commit d5f8d8224f
1 changed files with 3 additions and 1 deletions
@@ -23,7 +23,9 @@ func ExpandPostText(post *appbsky.FeedPost) string {
 			}

 			// bail out if bounds checks fail
-			if int(facet.Index.ByteStart)+charsAdded > len(postText) || int(facet.Index.ByteEnd)+charsAdded > len(postText) {
+			if facet.Index.ByteStart > facet.Index.ByteEnd ||
+				int(facet.Index.ByteStart)+charsAdded > len(postText) ||
+				int(facet.Index.ByteEnd)+charsAdded > len(postText) {
 				return false
 			}
 			linkText := postText[int(facet.Index.ByteStart)+charsAdded : int(facet.Index.ByteEnd)+charsAdded]