musicbrainz/picard — pull request #40 by fdude (2012-05-06 11:20:58+00:00)
Title: Fixed a bug in the preserve tags field which made it necessary to enter ...

...tags seperated by two spaces (instead of one as it was originally intended? )
example: to preserve the tags "genre" and "conductor" it was necessary to enter "genre conductor" (gap of to spaces) - i think it was supposed to be "genre conductor" (gap of one space)