fixed bug in findUp

Author: matthias314

internal/buffer/search.go

@@ -105,30 +105,21 @@ func (b *Buffer) findUp(r *regexp.Regexp, start, end Loc) ([2]Loc, bool) {
 	}
 
 	for i := end.Y; i >= start.Y; i-- {
-		l, charpos, padMode, rPadded := findLineParams(b, start, end, i, r)
-
-		allMatches := rPadded.FindAllIndex(l, -1)
+		charCount := util.CharacterCount(b.LineBytes(i))
+		from := Loc{0, i}.Clamp(start, end)
+		to := Loc{charCount, i}.Clamp(start, end)
 
+		allMatches := b.findAll(r, from, to)
 		if allMatches != nil {
 			match := allMatches[len(allMatches)-1]
-			if padMode&padStart != 0 {
-				_, size := utf8.DecodeRune(l[match[0]:])
-				match[0] += size
-			}
-			if padMode&padEnd != 0 {
-				_, size := utf8.DecodeLastRune(l[:match[1]])
-				match[1] -= size
-			}
-			start := Loc{charpos + util.RunePos(l, match[0]), i}
-			end := Loc{charpos + util.RunePos(l, match[1]), i}
-			return [2]Loc{start, end}, true
+			return [2]Loc{match[0], match[1]}, true
 		}
 	}
 	return [2]Loc{}, false
 }
 
 func (b *Buffer) findAll(r *regexp.Regexp, start, end Loc) [][2]Loc {
-	matches := [][2]Loc{}
+	var matches [][2]Loc
 	loc := start
 	for {
 		match, found := b.findDown(r, loc, end)