The $! variable is actually used for
system error messages. The version of perl doesn't really matter; it's the OS and platform that determine whether or not this JAPH will produce the proper output.
For example, on a machine running RedHat linux, I get:
substr outside of string at tmp.pl line 14.
Use of uninitialized value in concatenation (.) or string at tmp.pl li
+ne 14.
substr outside of string at tmp.pl line 14.
Use of uninitialized value in concatenation (.) or string at tmp.pl li
+ne 14.
J edretig no hial
And on another machine running IRIX, I get:
J eemp tocrdrnots i f
I'm afraid it just doesn't make sense to rely on the value of $! for a JAPH.
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