getpelican/pelican-plugins — pull request #330 by howthebodyworks (2014-10-04 00:05:18+00:00)
Title: create always_modified plugin

Sometimes you want to be able to sort all articles by modified time (e.g. for a "latest changes" page) but not all articles have a modified time. This plugin fills the "modified" field with the contents of the "date" field if it is missing, enabling that. Suits "Blosxom"-style notebook blogs etc