The Problem with s/H\d*//g is that it will also remove the H from HgS (ok,, not organic chemistry, but you get the point).

One way to avoid that is to use a negative look-ahead:

s/H(?![a-z])\d*//</c>

<p>Or if you prefer the Unicode-y approach:</p>

<code>s/H(?!\p{Ll})\d*//

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Perl 6 - the future is here, just unevenly distributed

In reply to Re^4: How to avoid an alphabet and integer next to it in a string? by moritz
in thread How to avoid an alphabet and integer next to it in a string? by piscean

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