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Gray text highlighting no longer works on my Debian/stretch system. Neither in Emacs for indicating the selected region, nor here in the browser editor for text within backticks.

Which system level could be responsible for this problem?

How should I proceed to debug?

  • 1
    What happen if you add (set-face-background 'region "midnightblue") into your ~/.emacs? – jimmij Jan 1 '16 at 16:15
  • The selected region is highlighted in a background color that very much looks like midnightblue. – Joachim W Jan 1 '16 at 16:23
  • With "gray" instead of "midnightblue" it works as well. So it seems the problem is that different applications (Emacs, Iceweasel) use a system default for selection highlighting color, and that this default has been accidentally set to white or transparent. – Joachim W Jan 1 '16 at 16:29
  • It seems you just have not-configured system. If it happened during last system update it is possible that some files from /etc directory has been acidentally(?) removed. Hard to tell. You need to set colors for those applications separately. – jimmij Jan 1 '16 at 16:32
  • www.gnu.org/software/emacs/manual/html_node/emacs/Standard-Faces.html says about the "region" face: "When Emacs is built with GTK support, its colors are taken from the current GTK theme." Quite possible that the problem appeared after I installed or deinstalled something GTK related. I'm not running gnome, but xfce4. What exactly is the relation between emacs and GTK, and how can I set a reasonable default highlighting color without installing GTK? – Joachim W Jan 1 '16 at 16:38

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