Try to replace all occurrences of $1
. The problem occurs when assigning 0
in the for()
You cannot assign to $1 directly using the = operator - so from that point of view, $1 is read-only. $1 is usually set by a matching regular expression (capture), see also perlre.
Maybe, you should also increase your editors font size? ;-)
Update: Off-topic but maybe of interest: Announcing Source Code Pro
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