Color visited links

[ghost]

Sometimes I will see a link that looks interesting and click it, only to discover that I have seen the page already. It would be helpful if we could color visited links. Here is my workaround, prog-idioms.user.css:

/*==userstyle==
@version 1.0.0
@namespace cup
@name Programming Idioms
==/userstyle==*/
@-moz-document domain("programming-idioms.org") {
   [href^="/idiom/"]:visited {
      color: hsl(270 100% 50%);
   }
}

[Deleplace]

I don't remember having css to prevent the standard colorization of visited links (my custom css is here), but I acknowledge that they don't seem to be displayed differently than unvisited links.

A few things in no particular order:

• Browsers prevent JS from doing whatever they want with visited links, for privacy reasons
• Idioms have several valid URLs, e.g.
  • https://www.programming-idioms.org/idiom/107/get-folder-containing-current-program
  • https://www.programming-idioms.org/idiom/107
  • https://www.programming-idioms.org/idiom/107/get-folder-containing-current-program/2139/python
  • https://www.programming-idioms.org/idiom/107/impl/2139
• The Language coverage page doesn't use the "canonical" URLs (1st form and 3rd form with titles), instead it uses the "raw" 2nd and 4th URL forms. Thus, a visited idiom may not be recognized as a visited link.