Style-PerlBackrefs.md

Pattern: Use of Perl-style backreference

Issue: -

Description

Perl-legacy variables denoting last regexp group matches ($1, $2, etc) are cryptic. Use Regexp.last_match(n) instead.

Examples

/(regexp)/ =~ string
...

# bad
process $1

# good
process Regexp.last_match(1)

Further Reading

• RuboCop - Style/PerlBackrefs
• https://github.com/bbatsov/ruby-style-guide#no-perl-regexp-last-matchers