buildin functions/keywords/constants in namespaces

[thbourlove]

No description provided.

[complex857]

Thanks for the patch. I'm not 100% sure what it supposed to fix exactly. Can you confirm it for me that the scenario it should fix is something like this (so i can add a unit test for this):

namespace Foo;
filter_v // <- hitting <c-x><c-o> here should offer completions

Now it only seem to work when explicitly prefixed with \ however PHP do find the functions as expected without it.

[thbourlove]

@complex857 It won't offer completions without this patch.