Tab completions on greedy strings only work before first space

[YouHaveTrouble]

When using suggestions provider for greedy string argument, completion method only fires if the argument input does not contain spaces. Tested and confirmed on cloud 1.6.1

[egg82]

Some related info from the Discord:

I've got this argument: With this code: Which I run like this: Which provides this output:

[jpenilla]

Duplicate of #190