Hmm, something in the DependencyInjection component is making travis fail on hhvm.

@Ener-Getick, @stof, @GromNaN, Oh, you know, I just though of another solution that could actually work for everyone.

What if we added a new protected method in the Route like this

public function setPath($pattern)
{
    // A pattern must start with a slash and must not have multiple slashes at the beginning because the
    // generated path for this route would be confused with a network path, e.g. '//domain.com/path'.
    return $this->doSetPath('/'.ltrim(trim($pattern), '/'));
}

protected function doSetPath($pattern) 
{
    $this->path = $pattern;
    $this->compiled = null;

    return $this;
}

or, instead of protected, we could always make doSetPath public and change the name to something like setPathRaw or whatever.

Either way, this wouldn't break BC, and is a cleaner solution that prevents "monkey patching"

Can you describe your use case where you would like to have trimming disabled?

@xabbuh silexphp/Silex#149

Basically, there is an issue with mounted/prefixed routes.

where if the prefix was /user, you'd never be able to add a route at /user, but only /user because an empty route '' is converted to '/'.Since silex is mostly used for RESTful API's, this is troublesome. Being able to disable the trimming on prefixed routes would solve this issue.

It took me some time to understand the issue so in case it helps here is an illustration with a routing file:

// routing.yml
sub_routing:
   resource: sub_routing.yml
   prefix: /foo

// sub_routing.yml
my_route:
    path: ''

// you would expect to be able to access /foo here 
// but you can only access /foo/ as paths are always
// prefixed with a /

@Ener-Getick, that is precisely it. I wasn't accustomed to the Syfmony configuration for this because I was referring to Silex, but, yes it's the same exact issue.

Another solution could be to detect empty paths and to not format them.
This has the advantage to fix the initial issue in symfony too but could be considered as a bc break.

@Ener-Getick, that would work for me as well, but that would be also be a BC break, unless we considered this a bug in the way it handles empty urls.

And it could potentially break someone's code if they were expecting that '' are silently converted to '/'

But if that's not a documented feature, then we might be able to get away with it.

This seems related to #12141 too.

I'm closing here as what @GuilhemN describes is exactly how this should work. When mounting a resource, like on a filesystem, the prefix is a directory.

@fabpot sounds good, thanks.