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perlvar.pod: add a separate section on $& et al
authorDavid Mitchell <davem@iabyn.com>
Wed, 24 Jul 2013 14:20:22 +0000 (15:20 +0100)
committerDavid Mitchell <davem@iabyn.com>
Wed, 24 Jul 2013 14:20:22 +0000 (15:20 +0100)
commit4044502721ac7b89c6d21cf1099a3a518717eeba
treef1702c93650fa534ab2012ceb12edc328a8d45bf
parent142a37fdb385bb222232b286abdedf9b1daaa746
perlvar.pod: add a separate section on $& et al

Add a new separate section explaining the performance issues of $`, $&
and $'; plus descriptions of the various workarounds like @-, /p and COW,
and which perl version they were each introduced in.

Then in the entries for each individual var, strip out any commentary
about performance, and just include a link to the new performance
section.
pod/perlvar.pod