Perl 编程/关键字/m
m是一个正则表达式匹配运算符，也用作m//.
m/…[/…]
# Shorthand form uses // to quote the regular expression
$Text =~ /search words/;
# The m function allows you to use your choice of quote marks
$Text =~ m|search words|;
$Text =~ m{search words};
$Text =~ m<search words>;
$Text =~ m#search words#;