oscardelben/rawler — pull request #26 by sce (2012-07-11 11:30:32+00:00)
Title: Add --logfile option.

Allows specifying which logfile to write to. Assigning a custom logfile
implies turning on logging.

(Logfile could perhaps have been assigned via --log=filename but trollop
doesn't support boolean trigger with optional string, so a separate
option is used instead.)