scheme language issues

So I found few issues:

• string don’t start with ' in scheme ' is for quote (you can quote names, which become symbols or lists) (#2263) solution: remove |'[^('\s]* from string regex
• lambda,define have first parameter mark as function invocation (lambda (foo bar) (concat foo bar)) foo is mark as function, I’ve try to came up with regex but was not able to find one. (#2263)
• function without argument is not marked as function solution: /(\()[^\s()]*(?=[\s)])/, added (?=[\s)]) instead of (?=\s) (#1463)
• ~numbers that don’t have space before them are not marked as numbers solution: optional space in the beginning of number regex (\s?|[()])~

Wanted to create PR but don’t know how to fix function with define and lambda.

[jcubic]

I think that this do the trick for last number issue:

/([\s()])[-+]?\d*\.?\d+(?:\s*[-+]\s*\d*\.?\d+i)?([\s()])/

([\s()]) at the end, instead of \b, same as at the begining, but I need to run the tests to be sure that this don’t break anything.

[RunDevelopment]

#2263 is merged and I think it addresses all issues here. Feel free to reopen this in case I missed something.