Case insensitive mimetype matching edge case

[Alexander Larsson]

On Wed, 2009-08-19 at 10:02 +0200, David Faure wrote:
> On Wednesday 19 August 2009, Alexander Larsson wrote:
> > Ugh. Additionally we have to extend the mime.cache format more. Maybe we
> > can solve this with a hack. What about this:
> >
> > All case insensitive globs are converted to lower case in the globs
> > file. Glob lookup is done by first matching the real filename against
> > the globs, then (on failure) convert the name to lower case and try
> > again. This will result in a case insensitive match except for things
> > marked as case sensitive that has at least one uppercase character.
> >
> > We can't do case-sensitive matching of only-lowercase globs, but we
> > don't currently have any example of this in the databases.
> 
> But I do want to do one of those, to solve bug 22634: I want
>    <glob pattern="core"/> to be case-sensitive="true".
> 
> How about a different hack:
> we generate in globs2 two lines, in case of case-sensitive:
> 50:text/x-c++src:*.C
> 50:text/x-c++src:*.C:cs
> Old parsers will create an entry for "*.C:cs", which will probably never match 
> any real file, so no big deal, while new parsers will take the second line as 
> an indication that the *.C glob (parsed one line above) should be understood 
> to be case sensitive.

Hmmm. I like this one. Sounds good to me. But lets make it extensible
when we're doing it, i.e. have  a comma-separated list of flags with
"cs" being one known one. Unknown flags are ignored, anything after
another : is ignored.