lower case vorbis comment name not recognized

[bastik]

When processing a *.ogg file with existing vorbis comment tags, lower case tag keys aren't recognized.

According to the vorbis comment specification, the tag names are case insensitive.

Using lltag version 0.14.3-2 on Ubuntu Natty.

How to reproduce:

$ vorbiscomment -w test.ogg -t 'tracknumber=2'
$ vorbiscomment -l test.ogg
tracknumber=2
$ lltag -n 2 test.ogg

Processing file "test.ogg"...
    Current tag values are:
      NUMBER: 2
      Tracknumber: 2
  Use these tag values [yaPCEDZROnqQ] (default is yes, h for help) ? y
  Tagging.
$ vorbiscomment -l test.ogg
TRACKNUMBER=2
tracknumber=2

[Launchpad Janitor (janitor)]

Status changed to 'Confirmed' because the bug affects multiple users.