I'm relatively new to perl, and could use some help solving a substitution problem. So I'm trying to make a change to every cell in the nth column of an HTML table. Those of you familiar with HTML will know that HTML doesn't "think" in columns, so I have to make a change to the nth cell in each row. Try as I might, I can only manage to change the first row. I'm thinking something like this: 
#this while loop isn't right, but I don't know what is...;
while ($tbltext =~ /<tr.*?>/cg) {
    $counter = 1; #reset the counter; 
    $tbltext =~ s/(<td.*?\/td>)/
                   ++$counter ==  $nth #is this the nth cell?
                   ? "${1}newtext" #if yes, add "newtext"
                   : $1 #otherwise, leave it
                   /ge;
    $tbltext =~ /<\/tr>/cg; #find the end of the row
} #exit the loop

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I can't get a 'while' loop to work. In addition, I've tried 'for' and 'foreach' loops, and every combination of \g \G and \cg that I can think of. It always finds only the first row tag, and then counts the cells and substitutes for the nth cell in the first row. Any sort of loop that I put around it only makes the substitution in the first row in every pass through the loop. I'm betting there's a really simple answer that I just haven't stumbled on yet. Can anyone here help?

In reply to Continuing after replacing nth occurrence by knlst8

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