tui/light: consume full 7-byte CSI sequences to prevent leftover printing (#4528)

- Fix parsing in escSequence so 7-byte CSI forms (e.g. ESC [ 5 ; 10 ~) set *sz = 7 and the entire sequence is consumed.
- Prevents trailing bytes (like 10~) from remaining in the input buffer and being printed as stray characters.

1 files changed, 3 insertions, 0 deletions

diff --git a/src/tui/light.go b/src/tui/light.go
index ec93e67e..e971175b 100644
--- a/src/tui/light.go
+++ b/src/tui/light.go
@@ -479,6 +479,7 @@ func (r *LightRenderer) escSequence(sz *int) Event {
 					return Event{Delete, 0, nil}
 				}
 				if len(r.buffer) == 7 && r.buffer[6] == '~' && r.buffer[4] == '1' {
+					*sz = 7
 					switch r.buffer[5] {
 					case '0':
 						return Event{AltShiftDelete, 0, nil}
@@ -525,6 +526,7 @@ func (r *LightRenderer) escSequence(sz *int) Event {
 					return Event{PageUp, 0, nil}
 				}
 				if len(r.buffer) == 7 && r.buffer[6] == '~' && r.buffer[4] == '1' {
+					*sz = 7
 					switch r.buffer[5] {
 					case '0':
 						return Event{AltShiftPageUp, 0, nil}
@@ -569,6 +571,7 @@ func (r *LightRenderer) escSequence(sz *int) Event {
 					return Event{PageDown, 0, nil}
 				}
 				if len(r.buffer) == 7 && r.buffer[6] == '~' && r.buffer[4] == '1' {
+					*sz = 7
 					switch r.buffer[5] {
 					case '0':
 						return Event{AltShiftPageDown, 0, nil}