feature request : completion outside of php files

[kermorgant]

It's not uncommon (for example in a Symfony project) to specify class names (FQN) in a xml or yaml file.

In those case, having a specific completion backend would be nice but I wonder how feasible this is.

• first, phpactor doen't yet provide a completion rpc call that would work in such case
• but if that was solved, I'm not really about how things should be :
  ** should it be a specific company-phpactor-fqn completion backend that could be added to other modes ?
  ** does the context of buffer matter ? ie should we activate such a completion backend only in a php project and if yes, by which means ?
  ** should the completion only focus on typing the FQN (that's the use case I have in mind, for symfony files like services.yaml)