My build server logs output (therefore it is not a tty), but supports ANSI color codes. I'm using --color=always. Symfony on the other hand uses --ansi. It would be nice to have an environment variable which forces color output, so that I don't have to remember to add the command line flag to every invocation of phpunit.

In order to standardize this, I've created https://bixense.com/clicolors/ which suggest to use CLICOLOR_FORCE for this. This is also shared by CMake, Waf and Apple's command line utilities.