LearnBoost/stylus — pull request #764 by tstrimple (2012-07-26 23:00:43+00:00)
Title: Writes css output to stdout if you pass the parameter --out stdout.

This change allows you to pass in a file, but instead of writing the .css to disk, it sends it to stdout. The usage is: `stylus --out stdout file.styl`. This is to get around the fact that paths are not available when using --line-numbers and sending in content via stdin.

An alternative to this approach would be to add an option to override the path which is displayed in debug which may be a better approach since you could then use relative paths for the debug information.