There is also perlrebackslash - Perl Regular Expression Backslash Sequences and Escapes
\040 Octal escapes
\x20 or \x{20} Hexadecimal escapes
\N{U+0020} or \N{SPACE} Named or numbered characters and character sequences
[ ] Character classes
(?-x: ) (?adlupimsx-imsx:pattern)

In reply to Re^2: giving spaces (perlrebackslash) by Anonymous Monk
in thread giving spaces by Anonymous Monk

Title:
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