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* Provide a better recommendation for 'Run only under a shell'Nicolas R2020-08-101-1/+1
| | | | | | | | | | | | | | Using an unset variable hides the true intent and also requires an extra backslash `\$running_under_some_shell` when used in heredoc. Note that this could also lead to mistake when using `\$` in a regular Perl program, as this would be true and not false as it should be. Stop recommending the use of an undefined variable for the shell fallback. Use '0', with a comment making clear the goal of 'if 0'.
* Switch most open() calls to three-argument form.John Lightsey2016-12-231-2/+2
| | | | | | | | | | Switch from two-argument form. Filehandle cloning is still done with the two argument form for backward compatibility. Committer: Get all porting tests to pass. Increment some $VERSIONs. Run: ./perl -Ilib regen/mk_invlists.pl; ./perl -Ilib regen/regcharclass.pl For: RT #130122
* Add JSON::PP to the Perl coreDavid Golden2011-01-021-0/+51
Per discussions with Jesse Vincent, JSON::PP has been added to the Perl core to support the new CPAN meta file specification