Function postProcessOptions

src/options.go:3703–3891

This function can have side-effects and alter some global states. So we run it on fzf.Run and not on ParseOptions.

(opts *Options)

// This function can have side-effects and alter some global states.
// So we run it on fzf.Run and not on ParseOptions.
func postProcessOptions(opts *Options) error {
	if opts.Ambidouble {
		uniseg.EastAsianAmbiguousWidth = 2
	}

	if opts.BorderShape == tui.BorderUndefined {
		opts.BorderShape = tui.BorderNone
	}

	if opts.ListBorderShape == tui.BorderUndefined {
		opts.ListBorderShape = tui.BorderNone
	}

	if opts.InputBorderShape == tui.BorderUndefined {
		opts.InputBorderShape = tui.BorderNone
	}

	if opts.HeaderBorderShape == tui.BorderUndefined {
		opts.HeaderBorderShape = tui.BorderNone
	}

	if opts.FooterBorderShape == tui.BorderUndefined {
		opts.FooterBorderShape = tui.BorderLine
	}

	if opts.HeaderLinesShape == tui.BorderNone {
		opts.HeaderLinesShape = tui.BorderPhantom
	}

	if opts.Pointer == nil {
		defaultPointer := "▌"
		if !opts.Unicode {
			defaultPointer = ">"
		}
		opts.Pointer = &defaultPointer
	}

	if opts.GapLine == nil {
		defaultGapLine := "┈"
		if !opts.Unicode {
			defaultGapLine = "-"
		}
		opts.GapLine = &defaultGapLine
	}

	markerLen := 1
	if opts.Marker == nil {
		if opts.MarkerMulti != nil && opts.MarkerMulti[0] == "" {
			empty := ""
			opts.Marker = &empty
			markerLen = 0
		} else {
			// "▎" looks better, but not all terminals render it correctly
			defaultMarker := "┃"
			if !opts.Unicode {
				defaultMarker = ">"
			}
			opts.Marker = &defaultMarker