[Bug 1329059] Don't produce terminal control sequences in perldoc

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https://bugzilla.redhat.com/show_bug.cgi?id=1329059



--- Comment #3 from Pavel Raiskup <praiskup@xxxxxxxxxx> ---
(In reply to Petr Pisar from comment #1)
> I cannot reproduce it on Fedora 23:

I feel I'm facing some magic, because I'm not able to reproduce this on F23
neither, *now*.

> To the question: Yes, perldoc has "-t" argument that disables ANSI sequences
> on the output. I think "perldoc --help" is not so hard way to discover it.

The question is whether it would be possible to not print terminal sequences
*by default*;  not how it can be done.  But yes -- as it obviously works on
F23, there is no need to change anything.

> I suspect perldoc sets LESS=-R. I dont' have the variable in my environment:

That's right.

> From my point of view, perldoc is fine in Fedora. This is issue in RHEL-7's
> perldoc.

Correct.

(In reply to Petr Pisar from comment #2)
> Actually I cannot reproduce it in RHEL-7 either. Thought it works there
> probably for some other reason. If you want to open a bug for RHEL-7, I need
> the reproducer.

In RHEL7, I'm able to reproduce it.  Perldoc does not set the LESS variable,
can be debugged by:

  $ cat lesswrap
  #! /bin/sh
  env | grep -i less
  less "$@"

  $ PAGER=./lesswrap perldoc perlreref

Petr, can you confirm?

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