AFAIK this should be legal, but it's producing a compile error:

bit isspace( char c )
{
debug
{
if( c == ' ' || c == '\f' || c == '\n' || c == '\r' || c == '\t' || c == '\v' )
printf( "IS SPACE\n" );
else
printf "IS NOT SPACE\n" );
}
return c == ' ' || c == '\f' || c == '\n' || c == '\r' || c == '\t' || c ==
'\v';
}

debug = 1;

Ignore this.  I was being dumb and missed a peren.  Teach me to copy & paste into a different file for my test case.

Sean