mod_proxy : ProxyPassReverse and regex ?

[Guillaume Fraysse <gfraysse@xxxxxxxxx>]

Hello to the list,

I'm trying to put up some vodoo Reverse Proxy Configuration on 2.2.11 (64bits, linux) apache build.
What I'm trying to achieve is that all URL such as https://my.domain.com/alice/bob/xxx are redirected to intranet URLs such as http://alice.intranet/alice/bob/xxx

I'm using regex, mod_rewrite and mod_proxy for that and it's working just fine but I'm facing a problem when one of the web application behind my reverse proxy use a "Location:" header. In this case the user gets an intranet URL  which he can't access. ProxyPassReverse semmes to be the adequate answer but doens't seem to support regex

Sample :
I currently have :
RewriteCond %{REQUEST_URI} ^/(.*)/bob.*
RewriteRule ^/(.*)/bob(.*) http://$1.intranet/$1/bob$2 [P,L] and this works fine

it seems natural to have a rule such as :
ProxyPassReverse /(.*)/bob/  http://$1.intranet/$1/bob

but this doesn't seem to be possible with ProxyPassReverse.

So I have a few questions : 
- are regex supported in ProxyPassReverse ?
- is there a workaround ? I'd like to avoid hard-coded ProxyPassReverse rules in my apache configuration.

Best regards,
Guillaume