handle regexps with missing \E (quick fix for #3700)

matthias314 · matthias314 · commit 45102916ee70 · 2025-11-24T17:58:43.000-05:00
diff --git a/internal/buffer/search.go b/internal/buffer/search.go
@@ -41,6 +41,12 @@ func findLineParams(b *Buffer, start, end Loc, i int, r *regexp.Regexp) ([]byte,
 		}
 	}
 
+	re, err := regexp.Compile(r.String() + `\E`)
+	if err == nil {
+		// r contains \Q without closing \E
+		r = re
+	}
+
 	if padMode == padStart {
 		r = regexp.MustCompile(".(?:" + r.String() + ")")
 	} else if padMode == padEnd {

Original file line number	Diff line number	Diff line change
`@@ -41,6 +41,12 @@ func findLineParams(b Buffer, start, end Loc, i int, r regexp.Regexp) ([]byte,`
`41`	`41`	`}`
`42`	`42`	`}`
`43`	`43`
	`44`	+ re, err := regexp.Compile(r.String() + `\E`)
	`45`	`+ if err == nil {`
	`46`	`+ // r contains \Q without closing \E`
	`47`	`+ r = re`
	`48`	`+ }`
	`49`	`+`
`44`	`50`	`if padMode == padStart {`
`45`	`51`	`r = regexp.MustCompile(".(?:" + r.String() + ")")`
`46`	`52`	`} else if padMode == padEnd {`