Single quotes inhibit interpolation

From the same perldoc perlop#Gory-details-of-parsing-quoted-constructs

  • '' , q//, tr''', y''', the replacement of s'''

    The only interpolation is removal of \ from pairs of \\ . Therefore "-" in tr''' and y''' is treated literally as a hyphen and no character range is available. \1 in the replacement of s''' does not work as $1 .

    • HTH

    Cheers Rolf
    (addicted to the Perl Programming Language and ☆☆☆☆ :)
    Wikisyntax for the Monastery

    In reply to Re: undocumented tr special behavior for single-quoted transform by LanX
    in thread undocumented tr special behavior for single-quoted transform by Anonymous Monk

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