Bug#870340: perl: perldoc outputs visible escape sequences again

[Niko Tyni]

Package: perl
Version: 5.26.0-4

As noticed by Olly Betts, the fix for #758689, where we injected the less
'-R' option in perldoc, has regressed in the 5.26 packages.

It looks like Pod::Perldoc is now trying to figure out what the pager
is before injecting options, and possibly gets confused by Debian's
sensible-pager or something like that.

Some related links:

 https://github.com/mrallen1/Pod-Perldoc/issues/28

 https://rt.perl.org/Public/Bug/Display.html?id=130759

 https://github.com/mrallen1/Pod-Perldoc/pull/16

 https://sources.debian.net/src/perl/5.26.0-4/cpan/Pod-Perldoc/lib/Pod/Perldoc/ToTerm.pm/#L35

-- 
Niko Tyni   ntyni at debian.org