... your map qr{...} join ... irritated me a bit, because the processed list has only one element.

Yeah, that gets to me a bit too, whenever I use it. But that syntax is used in haukex's original article, so I'm willing to consider it an "idiom." :)

The important point is that the regex elements be somehow converted into a regex object. It's at this stage that any necessary boundary assertions are added. The only reasonable alternative I can see is something like 

my $rx_search =
    join ' | ',
    map  quotemeta,
    reverse sort
    keys %replace
    ;
$rx_search = qr{ ... $rx_search ... }xms;

[download]
That's slightly more irritating to me and doesn't seem to clarify anything either.

Give a man a fish:  <%-{-{-{-<

In reply to Re^3: Need to speed up many regex substitutions and somehow make them a here-doc list by AnomalousMonk
in thread Need to speed up many regex substitutions and somehow make them a here-doc list by xnous

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