The easiest way to think of this may be:

  replace ' with \' if it lies between two letters

[download]
.. which you can do like this:
  s/(?>=\w)'(?=\w)/\\'/g;

[download]
.. or like this:
  s/\b'\b/\\'/g;

[download]

Hugo

In reply to Re: Escape single quote marks in words by hv
in thread Escape single quote marks in words by kiat

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