Missing font face definitions from Alchemist, maybe port them in? about exunit.el

[ananthakumaran]

These colors come from the mix test ... command output, not via emacs font-locking. When we run mix test, it displays colors via ANSI escape codes

which then get converted to colors by ansi-color-apply-on-region

The same issue exists on the terminal as well, the filename is not readable on dark themes. The defface you pointed out on alchemist is not controlling the test output, but used in other places. If you really want to disable the ANSI colors, you could do (setq exunit-mix-test-default-options '("--no-color")), but other useful things like error diffs won't get colors as well. Another option is to change the color used by mix cli formatter

[ryoung786]

I ended up fixing this in my emacs (v30.0.50) by customizing ansi-color-black. MediumPurple2 worked best for my dark theme, but ymmv.

(custom-set-faces
 ;; other customizations ...
 '(ansi-color-black ((t (:background "MediumPurple2" :foreground "MediumPurple2")))))

The entire Ansi-Colors customization group is helpful too.

[jsmestad]

Good to know. I was not sure how to even start debugging this 👏