"<HR +SIZE *=  *[0-9]+ *>" is readily understood as a regex only if one also assumes the use of alternate delimiters; for example 

if ( $somevarv =~ m<HR +SIZE *=  *[0-9]+ *> ) {
  do something....
}

[download]

One can argue that that's implicit in your post. I suspect NetWallah would so argue and certainly offered an accurate response based on that interpretation.

OTOH, one can certainly also argue that the OP almost mischievously ambiguous (or simply wrong). For example the spaces allocated -- if they exist -- and the lack of quotes around the size value -- would make the target-tag for your so-called regex non-conformant with html 4.01 or any more recent spec... a fact that's not conclusive but which might lead those familiar with the w3c specs to scratch their heads and wonder what you're talking about, before moving on to other questions.

My point? Careful attention to precision and specificity can (and usually is) very helpful to those who try to help those who are SOPW.

If you didn't program your executable by toggling in binary, it wasn't really programming!

In reply to Re: Understanding this particular Regex. by ww
in thread Understanding this particular Regex. by tty1x

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