rails/rails — pull request #7106 by LTe (2012-07-19 12:23:17+00:00)
Title: Use join without default separator in tagged logger

Updated version of #7084

https://github.com/rails/rails/commit/e482100d6ed022d00ba31c6c4377f6f947173337#commitcomment-1600684 //cc @tenderlove