minor but annoying rc-1.4 bug

[John (Most modern computers would break if you stood on them) Mackin <john@ civil.su.oz.au>]

In certain circumstances, rc 1.4 reports an error with the incorrect
line number, and I don't mean off by one.  The simplest case I have
at the moment is this one:

--- begin try
#!/usr/local/bin/rc

fn runtimeerror {
        $1 = fred
}

echo before

while (true) {

        runtimeerror


        echo loop end
}

echo after
--- end try

A run gives me:

: mod;; try
before
line 15: null variable name

Line 15 is the close curly on the while loop.  If you don't have the
while loop, it correctly reports the error as being on the line where
the call to the "runtimeerror" function was.

This can be (and was) a real hassle if the loop was bigger (mine was)
and if you don't know what's going on (I didn't at first :).

OK,
John.