difference between global -p and global -pr

Leo Liu <[email protected]> Wed, 06 Nov 2013 09:35:27 +0800
Newsgroups gmane.comp.gnu.global.general
Message-ID <[email protected]>
As the subject line suggested, 'global -p' and 'global -pr' seem to give
back the same output. What is their difference? Thanks.

Leo