Formatter: Too many spaces on private constant

[lbguilherme]

This is an output of crystal tool format:

private A      = 2
BBBBBB = 3

I would expect it to be formatted as:

private A = 2
BBBBBB    = 3

Or maybe as:

private A = 2

BBBBBB = 3

The bug seems to be that the length of the private keyword isn't taken into account.

[ftarulla]

Investigating on this issue lead me to issue #4111 closed by PR #4112 in which is described the new Too many spaces on private constant problem.
Then the discussion follows on issue #4113.