Implement attributes: bold, dim, italic, inverse

Track highlighting of recent changes separately from inverse, and
display highlight plus inverse as bordered text

include/winX.h

@@ -454,7 +454,6 @@ extern int get_name_width(Widget);
 extern Widget get_value_widget(Widget);
 extern void set_value_width(Widget, int);
 extern int get_value_width(Widget);
-extern void hilight_value(Widget);
 extern void swap_fg_bg(Widget);
 extern void set_value(Widget w, const char *new_value);
 /* external declarations */
@@ -524,6 +523,7 @@ extern XFontStruct *X11_unicode_font(Display *, XFontStruct *);
 extern void X11_wrap_widget(Widget);
 extern void X11_update_label(Widget);
 extern void X11_set_attrs(Widget, unsigned);
+extern void X11_set_highlight(Widget, boolean);
 extern void X11_set_percent(Widget, unsigned, Pixel);
 
 #endif /* WINX_H */

win/X11/winX.c

@@ -3021,7 +3021,6 @@ X11_bold_font(Display *display, XFontStruct *font)
 
     char *bold_font = fontname_boldify(font_name);
     XFontStruct *font2 = XLoadQueryFont(display, bold_font);
-    free(bold_font);
 
     return font2;
 }