Add dashed border style

New --border=dashed / --list-border=dashed / --header-border=dashed etc.
Uses U+2576 (╶) for horizontal edges and U+2506 (┆) for verticals, with
rounded corners (╭╮╰╯) and sharp T-junction mids (├┤). Terminal cells
are taller than wide (~2:1), so horizontals use a sparse stub per cell
while verticals need more dashes per cell to look evenly dashed.
Works with inline sections.

CHANGELOG.md

@@ -16,6 +16,9 @@ CHANGELOG
     - `--header-label` and `--footer-label` render on their respective separator row.
     - The separator inherits `--color list-border` when the section's own border color is not explicitly set.
     - `inline` takes precedence over `--header-first`: the inline section stays inside the list frame. `--header-border=inline` requires `--header-lines-border` to be `inline` or unset.
+- New `dashed` border style with dashed edges (`╶` / `┆`) and rounded corners.
+    - `--border=dashed`, `--list-border=dashed`, etc.
+    - Works with inline sections (T-junctions render correctly).
 - [vim] Move and resize popup window when detecting `VimResized` event (#4778) (@Vulcalien)
 - Bug fixes
     - Fixed gutter display in `--style=minimal`

man/man1/fzf.1

@@ -517,6 +517,8 @@ Draw border around the finder
 .br
 .BR double "        Border with double lines"
 .br
+.BR dashed "        Border with dashed lines and rounded corners"
+.br
 .BR block "         Border using block elements; suitable when using different background colors"
 .br
 .BR thinblock "     Border using legacy computing symbols; may not be displayed on some terminals"
@@ -955,6 +957,8 @@ Should be used with one of the following \fB\-\-preview\-window\fR options.
 .br
 .B * border\-double
 .br
+.B * border\-dashed
+.br
 .B * border\-block
 .br
 .B * border\-thinblock
@@ -1104,7 +1108,7 @@ separator line between the header window and the list section. \fBinline\fR
 style embeds the header inside the list border frame, joined to the list
 section by a horizontal separator; it requires a \fB\-\-list\-border\fR
 shape that has both top and bottom segments (rounded / sharp / bold /
-double / block / thinblock / horizontal) and falls back to \fBline\fR
+double / dashed / block / thinblock / horizontal) and falls back to \fBline\fR
 otherwise. When the list border also has side segments, the separator
 joins them with T-junctions; \fBhorizontal\fR has no side borders, so the
 separator is drawn without T-junction endpoints. Takes precedence over

src/options.go

@@ -85,7 +85,7 @@ Usage: fzf [options]
     --margin=MARGIN          Screen margin (TRBL | TB,RL | T,RL,B | T,R,B,L)
     --padding=PADDING        Padding inside border (TRBL | TB,RL | T,RL,B | T,R,B,L)
     --border[=STYLE]         Draw border around the finder
-                             [rounded|sharp|bold|block|thinblock|double|horizontal|vertical|
+                             [rounded|sharp|bold|block|thinblock|double|dashed|horizontal|vertical|
                               top|bottom|left|right|line|none] (default: rounded)
     --border-label=LABEL     Label to print on the border
     --border-label-pos=COL   Position of the border label
@@ -128,7 +128,7 @@ Usage: fzf [options]
                              (each for list section and preview window)
     --no-scrollbar           Hide scrollbar
     --list-border[=STYLE]    Draw border around the list section
-                             [rounded|sharp|bold|block|thinblock|double|horizontal|vertical|
+                             [rounded|sharp|bold|block|thinblock|double|dashed|horizontal|vertical|
                               top|bottom|left|right|none] (default: rounded)
     --list-label=LABEL       Label to print on the list border
     --list-label-pos=COL     Position of the list label
@@ -148,7 +148,7 @@ Usage: fzf [options]
     --ghost=TEXT             Ghost text to display when the input is empty
     --filepath-word          Make word-wise movements respect path separators
     --input-border[=STYLE]   Draw border around the input section
-                             [rounded|sharp|bold|block|thinblock|double|horizontal|vertical|
+                             [rounded|sharp|bold|block|thinblock|double|dashed|horizontal|vertical|
                               top|bottom|left|right|line|none] (default: rounded)
     --input-label=LABEL      Label to print on the input border
     --input-label-pos=COL    Position of the input label
@@ -165,7 +165,7 @@ Usage: fzf [options]
                              [,+SCROLL[OFFSETS][/DENOM]][,~HEADER_LINES]
                              [,default][,<SIZE_THRESHOLD(ALTERNATIVE_LAYOUT)]
     --preview-border[=STYLE] Short for --preview-window=border-STYLE
-                             [rounded|sharp|bold|block|thinblock|double|horizontal|vertical|
+                             [rounded|sharp|bold|block|thinblock|double|dashed|horizontal|vertical|
                               top|bottom|left|right|line|none] (default: rounded)
     --preview-label=LABEL
     --preview-label-pos=N    Same as --border-label and --border-label-pos,
@@ -177,7 +177,7 @@ Usage: fzf [options]
     --header-lines=N         The first N lines of the input are treated as header
     --header-first           Print header before the prompt line
     --header-border[=STYLE]  Draw border around the header section
-                             [rounded|sharp|bold|block|thinblock|double|horizontal|vertical|
+                             [rounded|sharp|bold|block|thinblock|double|dashed|horizontal|vertical|
                               top|bottom|left|right|line|inline|none] (default: rounded)
     --header-lines-border[=STYLE]
                              Display header from --header-lines with a separate border.
@@ -192,7 +192,7 @@ Usage: fzf [options]
   FOOTER
     --footer=STR             String to print as footer
     --footer-border[=STYLE]  Draw border around the footer section
-                             [rounded|sharp|bold|block|thinblock|double|horizontal|vertical|
+                             [rounded|sharp|bold|block|thinblock|double|dashed|horizontal|vertical|
                               top|bottom|left|right|line|inline|none] (default: line)
     --footer-label=LABEL     Label to print on the footer border
     --footer-label-pos=COL   Position of the footer label
@@ -968,6 +968,8 @@ func parseBorder(str string, optional bool) (tui.BorderShape, error) {
 		return tui.BorderThinBlock, nil
 	case "double":
 		return tui.BorderDouble, nil
+	case "dashed":
+		return tui.BorderDashed, nil
 	case "horizontal":
 		return tui.BorderHorizontal, nil
 	case "vertical":
@@ -986,7 +988,7 @@ func parseBorder(str string, optional bool) (tui.BorderShape, error) {
 	if optional && str == "" {
 		return defaultBorderShape, nil
 	}
-	return tui.BorderNone, errors.New("invalid border style (expected: rounded|sharp|bold|block|thinblock|double|horizontal|vertical|top|bottom|left|right|line|inline|none)")
+	return tui.BorderNone, errors.New("invalid border style (expected: rounded|sharp|bold|block|thinblock|double|dashed|horizontal|vertical|top|bottom|left|right|line|inline|none)")
 }
 
 func parseKeyChords(str string, message string) (map[tui.Event]string, []tui.Event, error) {
@@ -2341,6 +2343,8 @@ func parsePreviewWindowImpl(opts *previewOpts, input string) error {
 			opts.border = tui.BorderThinBlock
 		case "border-double":
 			opts.border = tui.BorderDouble
+		case "border-dashed":
+			opts.border = tui.BorderDashed
 		case "noborder", "border-none":
 			opts.border = tui.BorderNone
 		case "border-horizontal":

src/terminal.go

@@ -2155,7 +2155,7 @@ func (t *Terminal) adjustMarginAndPadding() (int, int, [4]int, [4]int) {
 			if idx == 3 {
 				extraMargin[idx] += 1 + bw
 			}
-		case tui.BorderRounded, tui.BorderSharp, tui.BorderBold, tui.BorderBlock, tui.BorderThinBlock, tui.BorderDouble:
+		case tui.BorderRounded, tui.BorderSharp, tui.BorderBold, tui.BorderBlock, tui.BorderThinBlock, tui.BorderDouble, tui.BorderDashed:
 			extraMargin[idx] += 1 + bw*(idx%2)
 		}
 		marginInt[idx] = sizeSpecToInt(idx, sizeSpec) + extraMargin[idx]
@@ -3017,7 +3017,7 @@ func (t *Terminal) printLabel(window tui.Window, render labelPrinter, opts label
 		return
 	}
 	switch borderShape {
-	case tui.BorderHorizontal, tui.BorderTop, tui.BorderBottom, tui.BorderRounded, tui.BorderSharp, tui.BorderBold, tui.BorderBlock, tui.BorderThinBlock, tui.BorderDouble:
+	case tui.BorderHorizontal, tui.BorderTop, tui.BorderBottom, tui.BorderRounded, tui.BorderSharp, tui.BorderBold, tui.BorderBlock, tui.BorderThinBlock, tui.BorderDouble, tui.BorderDashed:
 		if redrawBorder {
 			window.DrawHBorder()
 		}

src/tui/tui.go

@@ -596,6 +596,7 @@ const (
 	BorderLeft
 	BorderRight
 	BorderInline
+	BorderDashed
 )
 
 func (s BorderShape) HasLeft() bool {
@@ -759,6 +760,23 @@ func MakeBorderStyle(shape BorderShape, unicode bool) BorderStyle {
 			leftMid:     '╠',
 			rightMid:    '╣',
 		}
+	case BorderDashed:
+		// Terminal cells are taller than wide (~2:1), so horizontals can use a
+		// sparse stub per cell while verticals need more dashes per cell to look
+		// evenly dashed. Rounded corners and sharp T-junction mids.
+		return BorderStyle{
+			shape:       shape,
+			top:         '╶',
+			bottom:      '╶',
+			left:        '┆',
+			right:       '┆',
+			topLeft:     '╭',
+			topRight:    '╮',
+			bottomLeft:  '╰',
+			bottomRight: '╯',
+			leftMid:     '├',
+			rightMid:    '┤',
+		}
 	}
 	return BorderStyle{
 		shape:       shape,