Re: [PATCH] Introduce a filter-path argument to git-daemon, for doing custom path transformations

> 2009/3/19 Johannes Schindelin <Johannes.Schindelin@gmx.de>:
> >> I actually was hoping (especially we have Dscho on Cc: list) that 
> >> somebody like you would start suggesting a "plug in" approach to load 
> >> .so files, which would lead to a easy-to-port dso support with the 
> >> help from msysgit folks we can use later in other parts of the system 
> >> (e.g. customizable filters used for diff textconv, clean/smudge, 
> >> etc.)
> >
> > I do not like that at all.  Dynamic libraries -- especially on Windows 
> > -- are a major hassle.
> >
> > However, I cannot think of anything Johan might want to do that would 
> > not be possible using a bunch of regular expressions together with 
> > substitions.
> 
> Let me reiterate my use-case then: I need to dynamically substitute one 
> path with another. Perhaps "map" paints a better picture than 
> "substitute" here. Please refer to my second mail in this thread for 
> more details.
> 
> The only way I can see regexps work, is that if they're read, on a 
> per-request basis (reloading git-daemon every time they change is just 
> silly), from somewhere outside the git-daemon. Then, you might as well 
> take the full-on approach this patch provides.
>
> > FWIW I have experimental code in my personal tree that sports 
> > strbuf_regsub(), a function to replace matches of a regular expression 
> > (possibly with groups) by a given string (which may contain \0 .. \9, 
> > being replaced with the respective group's contents).