Bug#417606: vorbis-tools: vorbiscomment manpage is unclear about clearing tags

[Clint Adams]

> I use vorbiscomment as a OGG backend to manipulate audio tags in my lltag tool.
> Under some circumstances, lltag might ask vorbiscomment to clear all tags from
> a file. vorbiscomment ends up being called as:
> 	vorbiscomment -w -q foo.ogg
> and instead of replacing current tags with nothing, it waits until we enter
> something and hit ctrl-d.
> 
> I can't find any documentation about this behavior in the manpage. So it would
> be cool to add it.

If you just run "vorbiscomment" and read the usage info, that should
cover it.  A patch to add appropriate verbiage to the man page would be
appreciated.

> Moreover, it would be cool to also document how to remove all tags from an OGG
> file. I understand it is not vey useful, but in case it is possible, it would be
> good to know. So far, the 'best' I found would be
> 	vorbiscomment -w -q foo.ogg -t 'DUMMY='
> not very nice...

: | vorbiscomment -w foo.ogg

or

vorbiscomment -w foo.ogg </dev/null

should do the trick