require 'English'if you use a named global such as
$LAST_MATCH_INFO. Otherwise this could result in an annoying bug.
The code snippet of How to fix gsub on SafeBuffer objects was adjusted during a rubocop upgrade.
Rubocop tells you everything you need to know to fix the offense
Style/SpecialGlobalVars: Prefer $LAST_MATCH_INFO from the stdlib 'English' module (don't forget to require it) over $~.
In this scenario you should be very careful. If you forget to require
'English', your code may not work any longer as expected.
# Before Thread.current[:LAST_MATCH_DATA] = $~ # After rubocop ugrade - was not working as expected Thread.current[:LAST_MATCH_DATA] = $LAST_MATCH_INFO # Fixed require 'English' Thread.current[:LAST_MATCH_DATA] = $LAST_MATCH_INFO