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workaround for tmux sixel bug #2600

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workaround for tmux sixel bug #2600

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592350a
workaround for tmux sixel bug
valoq May 27, 2026
94f671c
gate tmux workaround
valoq May 27, 2026
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8 changes: 8 additions & 0 deletions sixel.go
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Original file line number Diff line number Diff line change
Expand Up @@ -19,6 +19,14 @@ type sixelScreen struct {
func (sxs *sixelScreen) clearSixel(win *win, screen tcell.Screen, filePath string) {
if sxs.lastFile != "" && (filePath != sxs.lastFile || *win != sxs.lastWin || sxs.forceClear) {
screen.LockRegion(sxs.lastWin.x, sxs.lastWin.y, sxs.lastWin.w, sxs.lastWin.h, false)
// tmux sixel workaround: emit ECH per row so tmux clears the image overlay
if os.Getenv("TMUX") != "" {
var b strings.Builder
for y := sxs.lastWin.y; y < sxs.lastWin.y+sxs.lastWin.h; y++ {
fmt.Fprintf(&b, "\033[%d;%dH\033[%dX", y+1, sxs.lastWin.x+1, sxs.lastWin.w)
}
fmt.Fprint(os.Stderr, "\0337"+b.String()+"\0338")
}
}
}

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