Non-numeric argument to divert error?

[Mo DeJong]

Hi all.

While upgrading a package to autoconf 2.50, I ran into
a error/warning message that I don't understand.

% cat aclocal.m4 
divert(-1)
define(AC_CHECK_DEBUGGING,[])
divert

With autoconf 2.13, nothing is printed:

% /usr/bin/autoconf

With autoconf 2.50:

% autoconf
./aclocal.m4:3: /usr/bin/m4: Non-numeric argument to built-in `divert'

I poked around on the web and found some examples that
seemed to indicate that diverting to an unknown number
like -1 was ok. Any ideas about how to resolve this?

Mo DeJong
Red Hat Inc