Don't check for double quoted string in regexp.

[famished-tiger]

In the Macros4Cuke gem code, I am scanning parts of a Cucumber scenario. String parameters in Cucumber are usually delimited by double quotes. These parameters are detected by the following regular expression:

/"((?:[^\\"]|\\.)*)"/

Surprisingly Rubocop complains when it finds this regexp with the following message:
Prefer single-quoted strings when you don't need string interpolation or special symbols.

I expected this message to apply only to string literals not regexps.

[bbatsov]

Thanks for reporting this!