elpa-recursive-narrow 20140811.1546+git20190306.5e3e206-1 (s390x binary) in ubuntu groovy

 This package defines two functions, recursive-narrow-or-widen-dwim and
 recursive-widen-dwim that replace the builtin functions narrow-to-region and
 widen. These functions operate the same way, except in the case of multiple
 calls to recursive-narrow-to-region-dwim. In this case, recursive-widen-dwim
 will go to the previous buffer visibility, not make the entire buffer visible.