operator_spaces handles +,- and / signs as operator in cases where it is not an operator

[f3c0]

I tried to force +, - and / operators with spaces before and after.
Unexpected behaviour:

• all the signed numbers became invalid format
• function references like function_name/2 have missing space message too

I've made a test repo for the bug: https://github.com/f3c0/elvis_test.git

$ git clone https://github.com/f3c0/elvis_test.git .
$ git checkout  test_operators_plus_minus_slash

$ elvis --version
   ______     _   
  / __/ /  __(_)__
 / _// / |/ / (_-<
/___/_/|___/_/___/
Version: 0.4.1
Elvis Core Version: 0.3.9

$ elvis rock
# src/elvis_test.erl [FAIL]
  - operator_spaces
    - Missing space right "/" on line 3
    - Missing space left "/" on line 3
    - Missing space right "-" on line 9
    - Missing space right "+" on line 11

[elbrujohalcon]

You're right, this is a bug.

[f3c0]

I have a very similar problem with / sign.
Elvis handles it in the functions references like function_name/2 as slash operator.
Should I open as separated ticket, or just amend this?

[elbrujohalcon]

We should solve them both together, so I would say just amend this one

[f3c0]

Thanks, I've just updated the original report