jenkinsci/trac-publisher-plugin — pull request #4 by akihirox (2012-08-04 05:12:35+00:00)
Title: replace tab by 4 spaces

The Core Coding Convention section in
Governance Document (https://wiki.jenkins-ci.org/display/JENKINS/Governance+Document)
says "use 4 sapce". This is only for core code but I think 4 sapce is much better in plugins too.