perllexwarn
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.
© 1993–2016 Larry Wall and others
Licensed under the GNU General Public License version 1 or later, or the Artistic License.
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https://perldoc.perl.org/5.22.0/perllexwarn.html