As others have pointed out, the key here is [^'] to keep inside the '....'.
This is a little shorter:
while ($value =~ s/href='[^']*?\K<br>//gsi) {} ;
but requires n+1 passes across
$value, where n is the maximum number of
<br> between
href' and
'.
Or, following massa, above:
$value =~ s{href='[^']*?\K<br>([^']*)}{local $_ = $1, s/<br>//g, $_}
+gsie;
which does one pass only, and only processes any
href'...' which contain one or more
<br>. (A
(?=') before the first
} will stop it processing an unterminated
href'...', should you care.)
And that fills my quota of regex finagling for the day.
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