perldiag - さまざまな Perl 診断メッセージ - perldoc.jpThese messages are classified as follows (listed in increasing order of desperation): (W) A warning (optional). (D) A deprecation (optional). (S) A severe warning (default). (F) A fatal error (trappable). (P) An internal error you should never see (trappable). (X) A very fatal error (nontrappable). (A) An alien error message (not generated by Perl). (W) 警告 (オプション) (D) 非推奨 (オプション) (S) 重大な警告 (デフォルト)
