Re: Automatic face setting based on contrast?

[Richard Stallman]

[[[ To any NSA and FBI agents reading my email: please consider    ]]]
[[[ whether defending the US Constitution against all enemies,     ]]]
[[[ foreign or domestic, requires you to follow Snowden's example. ]]]

  > FWIW, I wrote the previous message with the following use-case in mind:
  > define a face that makes the text more/less red, or one that
  > increases/decreases contrast, ...

It might be rather easy to make that work
on a terminal with lots of gradations of color.
The main hard part would be to know how much change is needed
for users to see it clearly.

However, on a tty with a limited set of colors it could be impossible.
If a mode depends on this to work in order to make the output comprehensible,
it would fail totally.

-- 
Dr Richard Stallman (https://stallman.org)
Chief GNUisance of the GNU Project (https://gnu.org)
Founder, Free Software Foundation (https://fsf.org)
Internet Hall-of-Famer (https://internethalloffame.org)