You are right that you have to break ties.

But we are talking about operators for 2 different data types.

If one writes: 

" " x $indent*$spaces_p_tab . 2+3 ." + " . 4+6 . " == ".3*5

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Wouldn't it make sense to do the number operations first then combine their string representations with the strings?

Since if you do the string operations first or give them equal precedence with the number operations, you end up with an invalid result. Why not do the evaluation that naturally gives you a valid result rather than choosing a rule to make it wrong?

I would say that humans tend to group like with like and that a well designed parser would follow that premise over one that makes humans wrong.

In reply to Re^8: Precedence design question...'x' & arith by perl-diddler
in thread Precedence design question...'x' & arith by perl-diddler

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