Add String#lchomp and String.lchomp!
With the expected behavior, i.e.
irb(main):013:0> 'foobar'.lchomp('foo') => "bar" irb(main):014:0> 'foobar'.lchomp('baz') => "foobar"
A quick google search will turn up plenty of practical uses for this, as well as lots of libraries that patch
String themselves to add this.