Reference

perllexwarn(1)

Perl Lexical Warnings

NAME

perllexwarn - Perl Lexical Warnings

DESCRIPTION

Perl v5.6.0 introduced lexical control over the handling of warnings by category. The "warnings" pragma generally replaces the command line flag -w. Documentation on the use of lexical warnings, once partly found in this document, is now found in the warnings documentation.

History

-W until Debian 7 (Wheezy); -X until Debian 7 (Wheezy); -w until Debian 7 (Wheezy).