Better fix for #4465 - remove unnecessary erase

src/terminal.go

@@ -2291,13 +2291,20 @@ func (t *Terminal) resizeWindows(forcePreview bool, redrawBorder bool) {
 						innerMarginInt[0]+shift, innerMarginInt[3]+pwidth+m, innerWidth-pwidth-m, innerHeight-shrink, tui.WindowList, noBorder, true)
 
 					// Clear characters on the margin
-					//   fzf --bind 'space:preview(seq 100)' --preview-window left,1
+					// fzf --bind 'space:toggle-preview' --preview ':' --preview-window left,1
 					if !hasListBorder {
 						for y := 0; y < innerHeight; y++ {
 							t.window.Move(y, -1)
 							t.window.Print(" ")
 						}
 					}
+					// fzf --bind 'space:toggle-preview' --preview ':' --preview-window left,1,border-none
+					if !previewOpts.Border().HasRight() {
+						for y := 0; y < innerHeight; y++ {
+							t.window.Move(y, -2)
+							t.window.Print(" ")
+						}
+					}
 
 					innerBorderFn(marginInt[0], marginInt[3]+pwidth, width-pwidth, height)
 					createPreviewWindow(marginInt[0], marginInt[3], pwidth, height)

src/tui/tui.go

@@ -505,7 +505,7 @@ type BorderCharacter int
 func MakeBorderStyle(shape BorderShape, unicode bool) BorderStyle {
 	if shape == BorderNone || shape == BorderPhantom {
 		return BorderStyle{
-			shape:       BorderRounded,
+			shape:       BorderNone,
 			top:         ' ',
 			bottom:      ' ',
 			left:        ' ',