1 files changed, 19 insertions, 0 deletions
diff --git a/llgo/third_party/liner/width.go b/llgo/third_party/liner/width.go
index 5c6bf6854f5..d8984aae9b8 100644
--- a/llgo/third_party/liner/width.go
+++ b/llgo/third_party/liner/width.go
@@ -36,6 +36,25 @@ func countGlyphs(s []rune) int {
 	return n
 }
 
+func countMultiLineGlyphs(s []rune, columns int, start int) int {
+	n := start
+	for _, r := range s {
+		switch {
+		case unicode.IsOneOf(zeroWidth, r):
+		case unicode.IsOneOf(doubleWidth, r):
+			n += 2
+			// no room for a 2-glyphs-wide char in the ending
+			// so skip a column and display it at the beginning
+			if n%columns == 1 {
+				n++
+			}
+		default:
+			n++
+		}
+	}
+	return n
+}
+
 func getPrefixGlyphs(s []rune, num int) []rune {
 	p := 0
 	for n := 0; n < num && p < len(s); p++ {