…ial meaning. These are called "escape sequences", and all such are described in perlrebackslash . A backslash sequence (of a letter or digit) that doesn't currently have special meaning to Perl will raise a warning if warnings are enabled, as those are reserved for potential futu…

…ial meaning. These are called "escape sequences", and all such are described in perlrebackslash . A backslash sequence (of a letter or digit) that doesn't currently have special meaning to Perl will raise a warning if warnings are enabled, as those are reserved for potential futu…

…oesn't match its literal value. Such a sequence is called an "escape sequence". perlrebackslash documents all of the current ones. A warning is raised if you escape a character that isn't a metacharacter and isn't part of a currently defined escape sequence. You can specify how m…