feat: add configuration variable to clear default styles in theme.yml #1724
Description
Proposed change
Add a configuration variable to theme.yml to clear default styles, while still letting the EZA_COLORS and LS_COLORS environment variables take precedence.
Thank you to @martenlienen for this comment that inspired this issue!
Description
Currently, setting the environment variable EZA_COLORS to reset is intended to clear the default styles (with a fix pending in #1718). However, mixing EZA_COLORS=reset and theme.yml would likely make the resulting configurations confusing. Being able to define a specific variable in theme.yml to clear default styles would be a much cleaner way to perform this reset.
The EZA_COLORS and LS_COLORS environment variables take precedence over theme.yml. Thus, the configuration variable should clear only the default styles and not the styles defined in EZA_COLORS or LS_COLORS. I'd be inclined to name the configuration variable something like clear_default_styles (defaulting to false) to reduce the chance of ambiguity. 🤔
It seems worthwhile to include some tests to make sure that EZA_COLORS and LS_COLORS take precedence.
Documentation updates
The documentation would need to be updated to describe this, including near the discussions of EZA_COLORS=reset in man/eza_colors-explanation.5.md and man/eza_colors.5.md. It may be worthwhile to recommend against mixing EZA_COLORS and theme.yml.
Related issues
This issue follows up on #1718, and is a sub-issue for #731.
Thank you to everyone for working on this wonderful project! It's making me want to learn Rust so that I can contribute. 🦀