UPDATE: Doh! See dws's reply above. Damn sans-serif font...
Examining the split documentation very closely
we see that the first argument is in fact a regular expression.
So you are trying to match a pipe at the beginning of the line.
You need to escape your sequence. This could easily have been found by
RTFM, and perhaps by a search BUT, it is something that even experienced
people get nicked by. Enjoy.
--
perl -pew "s/\b;([mnst])/'$1/g"
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