[vorbis] album portion of the tags request

[Tuomo Latto]

At 20:05 07.12.01 +0100, Andreas Fuchs wrote:
>Today, Robert Woodcock <rcw at debian.org> wrote:
>
> > On Fri, Dec 07, 2001 at 05:18:03AM -0500, Jon Shiring wrote:
> >> Addendum: Anyone who proposes caching a Songprint, Musicbrainz, or
> >> other audio fingerprint in the file obviously doesn't understand the
> >> goals of an audio fingerprint: to properly identify a song without
> >> having to refer to tags.  To cache a fingerprint accomplishes the
> >> same thing as storing the title, artist, etc. in the file.  The data
> >> is no more reliable.
> >
> > ID3v2 has a MCDI tag for storing the CD TOC (from that, any hash could
> > be generated). Unfortunately AFAIK not a single program implements it.
> >
> > It's binary data, which makes things fun. Is there a standard for
> > escaping linefeeds and such in vorbis comments?
>
> >From the vorbis comment spec:
>
>
>Content vector format
>---------------------
>     * A case-insensitive field name that may consist of ASCII 0x20
>       through 0x7D, 0x3D ('=') excluded. ASCII 0x41 through 0x5A
>       inclusive (A-Z) is to be considered equivalent to ASCII 0x61
>       through 0x7A inclusive (a-z).
>     * The field name is immediately followed by ASCII 0x3D ('='); this
>       equals sign is used to terminate the field name.
>     * 0x3D is followed by 8 bit clean UTF-8 field contents to the end of
>       the field.
>
>
>So, there seems to be absolutely no need to escape

What exactly is meant by "ASCII 0x41 through 0x5A inclusive (A-Z) is to be 
considered equivalent to ASCII 0x61 through 0x7A inclusive (a-z)"?
Wouldn't it mean that those characters should be interchangeable?

Tuomo

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