Bug #11399: Regexp's free-spacing mode adding whitespace to character classes

• Status: Rejected
• Assignee: -
• Target version: -
• Backport: 2.0.0: UNKNOWN, 2.1: UNKNOWN, 2.2: UNKNOWN

[sos4nt (Stefan Schüßler)]

The free-spacing mode (x-option) does not ignore whitespace within character classes:

r = /[a
  # comment
b]/x

" \nab".scan(r)
#=> [" ", "\n", "a", "b"]

I would expect a regular expression that's equivalent to /[ab]/

[jeremyevans0 (Jeremy Evans)]

• Status changed from Open to Rejected

This is not a bug. The documentation suggestions the use of character classes if you want to match whitespace (https://docs.ruby-lang.org/en/trunk/regexp_rdoc.html#label-Free-Spacing+Mode+and+Comments).