[Bug other/90411] Colored diagnostics can omit characters

[pinskia at gcc dot gnu.org via Gcc-bugs]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=90411

--- Comment #6 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
Another reference of the problem.
  http://invisible-island.net/xterm/xterm.faq.html#grep_colors