mod_substitute tags parsing

[Nick Gearls]

Hello,

I took the tags parsing code from mod_headers to incorporate it to 
mod_substitute.
It almost works, but I cannot obtain the handlers via apr_hash_get() - 
even the locally defined ones (%D & %t).
They are all registered:
   static int tags_pre_config(apr_pool_t *p, apr_pool_t *plog,
   apr_pool_t *ptemp)
   {
        format_tag_hash = apr_hash_make(p);
        register_format_tag_handler("D", (const void
   *)tags_request_duration);
        register_format_tag_handler("t", (const void *)tags_request_time);
        register_format_tag_handler("e", (const void
   *)tags_request_env_var);
        register_format_tag_handler("s", (const void
   *)tags_request_ssl_var);

        return OK;
   }


Any idea what could be the problem?

Btw, I copied the code from mod_headers and it is 98% identical, so I'll 
modularise it to be 100% portable between these 2 modules (and others). 
The next step will be to remove it from the modules itself and make the 
static functions global.

Thanks,

Nick