Respect 'regular' attribute in 'bw' base theme

Don't make the text bold if an element is explicitly specified as
'regular'.

Fix #3222

src/options.go

@@ -2003,9 +2003,7 @@ func postProcessOptions(opts *Options) {
 		theme := opts.Theme
 		boldify := func(c tui.ColorAttr) tui.ColorAttr {
 			dup := c
-			if !theme.Colored {
-				dup.Attr |= tui.Bold
-			} else if (c.Attr & tui.AttrRegular) == 0 {
+			if (c.Attr & tui.AttrRegular) == 0 {
 				dup.Attr |= tui.Bold
 			}
 			return dup

src/terminal.go

@@ -201,7 +201,6 @@ type Terminal struct {
 	tabstop            int
 	margin             [4]sizeSpec
 	padding            [4]sizeSpec
-	strong             tui.Attr
 	unicode            bool
 	listenPort         *int
 	borderShape        tui.BorderShape
@@ -541,10 +540,6 @@ func NewTerminal(opts *Options, eventBox *util.EventBox) *Terminal {
 	if len(opts.Preview.command) > 0 || hasPreviewAction(opts) || opts.ListenPort != nil {
 		previewBox = util.NewEventBox()
 	}
-	strongAttr := tui.Bold
-	if !opts.Bold {
-		strongAttr = tui.AttrRegular
-	}
 	var renderer tui.Renderer
 	fullscreen := !opts.Height.auto && (opts.Height.size == 0 || opts.Height.percent && opts.Height.size == 100)
 	if fullscreen {
@@ -623,7 +618,6 @@ func NewTerminal(opts *Options, eventBox *util.EventBox) *Terminal {
 		previewLabelOpts:   opts.PreviewLabel,
 		cleanExit:          opts.ClearOnExit,
 		paused:             opts.Phony,
-		strong:             strongAttr,
 		cycle:              opts.Cycle,
 		headerFirst:        opts.HeaderFirst,
 		headerLines:        opts.HeaderLines,

src/tui/tui.go

@@ -525,28 +525,28 @@ func EmptyTheme() *ColorTheme {
 func NoColorTheme() *ColorTheme {
 	return &ColorTheme{
 		Colored:      false,
-		Input:        ColorAttr{colDefault, AttrRegular},
-		Fg:           ColorAttr{colDefault, AttrRegular},
-		Bg:           ColorAttr{colDefault, AttrRegular},
-		DarkBg:       ColorAttr{colDefault, AttrRegular},
-		Prompt:       ColorAttr{colDefault, AttrRegular},
+		Input:        ColorAttr{colDefault, AttrUndefined},
+		Fg:           ColorAttr{colDefault, AttrUndefined},
+		Bg:           ColorAttr{colDefault, AttrUndefined},
+		DarkBg:       ColorAttr{colDefault, AttrUndefined},
+		Prompt:       ColorAttr{colDefault, AttrUndefined},
 		Match:        ColorAttr{colDefault, Underline},
 		Current:      ColorAttr{colDefault, Reverse},
 		CurrentMatch: ColorAttr{colDefault, Reverse | Underline},
-		Spinner:      ColorAttr{colDefault, AttrRegular},
-		Info:         ColorAttr{colDefault, AttrRegular},
-		Cursor:       ColorAttr{colDefault, AttrRegular},
-		Selected:     ColorAttr{colDefault, AttrRegular},
-		Header:       ColorAttr{colDefault, AttrRegular},
-		Border:       ColorAttr{colDefault, AttrRegular},
-		BorderLabel:  ColorAttr{colDefault, AttrRegular},
-		Disabled:     ColorAttr{colDefault, AttrRegular},
-		PreviewFg:    ColorAttr{colDefault, AttrRegular},
-		PreviewBg:    ColorAttr{colDefault, AttrRegular},
-		Gutter:       ColorAttr{colDefault, AttrRegular},
-		PreviewLabel: ColorAttr{colDefault, AttrRegular},
-		Separator:    ColorAttr{colDefault, AttrRegular},
-		Scrollbar:    ColorAttr{colDefault, AttrRegular},
+		Spinner:      ColorAttr{colDefault, AttrUndefined},
+		Info:         ColorAttr{colDefault, AttrUndefined},
+		Cursor:       ColorAttr{colDefault, AttrUndefined},
+		Selected:     ColorAttr{colDefault, AttrUndefined},
+		Header:       ColorAttr{colDefault, AttrUndefined},
+		Border:       ColorAttr{colDefault, AttrUndefined},
+		BorderLabel:  ColorAttr{colDefault, AttrUndefined},
+		Disabled:     ColorAttr{colDefault, AttrUndefined},
+		PreviewFg:    ColorAttr{colDefault, AttrUndefined},
+		PreviewBg:    ColorAttr{colDefault, AttrUndefined},
+		Gutter:       ColorAttr{colDefault, AttrUndefined},
+		PreviewLabel: ColorAttr{colDefault, AttrUndefined},
+		Separator:    ColorAttr{colDefault, AttrUndefined},
+		Scrollbar:    ColorAttr{colDefault, AttrUndefined},
 	}
 }