[perl #38794] [TODO] compilers/pge/rulec.pir should report line numbers on failure

[Will Coleda]

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We should instead report the error by line number and position.

For example, given a grammar of:

grammar bad;

rule sugar {{ good }

and a command of:

../../parrot ../../compilers/pge/rulec.pir --compiler=p6rules foo.g

we currently output:

p6rule parse error: Term expected at offset 26, found '{'

instead we should output:

p6rule parse error: Term expected at line 3, position 13, found '{'

Regards.