CLI Many-to-Many Mode process .css files

[mwojslaw]

It seems like when using command sass input:output to process directories, not only sass files but also css files are being processed.

[nex3]

That's correct and intentional. Sass supports plain CSS files as an input syntax.

[ntkme]

If you want to stop process .css source files and only use them as dependencies, you can prefix the css filenames with underscore like _filename.css. You can still import as @import "filename";, but filename begin with underscore will not be processed as an entrypoint.