lepture/python-livereload — pull request #27 by gravenimage (2013-05-07 20:58:17+00:00)
Title: Adds command to specify actual file modified in a shell command run by a Task 

SubstCommandCompiler substitutes [parts of] the filename of the actual
file modified where specified in the command. substshell provides a
simpler constructor for a Guardfile. This allows the user to use
wildcards when specifying files to be watched in Tasks but still take
specific action for the file changed. See compiler.rst for an
example.