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Re^2: Match a pattern only if it is not within another pattern

by Transient (Hermit)
on Aug 16, 2005 at 19:51 UTC ( [id://484227]=note: print w/replies, xml ) Need Help??

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  1. or download this
    bl123 and barthis123thatqux and barso123quxhim and123som 123
  2. or download this
    $str =~  s/((?<!bar)\S*)foo((?!\S*qux))/${1}123${2}/gx;
  3. or download this
    bl123 and barthisfoothatqux and barsofooquxhim and123som 123

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