Bug #14488: Unicode characters prevent [[:punct:]] character class from matching certain characters in subsequent matches

• Status: Closed
• Assignee: -
• Target version: -
• ruby -v: 2.4.3
• Backport: 2.3: UNKNOWN, 2.4: UNKNOWN, 2.5: UNKNOWN

[patbl (Patrick Brinich-Langlois)]

In 2.3.5, [[:punct:]] doesn't match +. In 2.5.0, it does. In 2.4.3, it matches, but not after you match against a string containing one or more unicode characters. I would expect 2.4.3 to have the behavior of 2.5.0.

puts RUBY_VERSION
p %w[+ é +].grep(/[[:punct:]]/)

2.3.5
[]

2.4.3
["+"]

2.5.0
["+", "+"]

One of the commenters here noticed that this behavior may be related to this issue. It seems that `[$+<=>^|~]`` are affected by the bug, but other punctuation characters aren't (though I tested only a handful of them).

[jeremyevans0 (Jeremy Evans)]

• Status changed from Open to Closed