id-utils-4.0 does not handle identifiers 'l' or 'u'

[David Sanderson]

When trying ftp://prep.ai.mit.edu/gnu/idutils/id-utils-4.0.tar.gz on
FreeBSD 4.3, I noticed that it could not show me uses of the identifiers
"l" or "u".  It could handle "v" just fine, so it can handle at least
one single character identifier.  Perhaps it is confusing "l" and "u"
with integer constants?

David Sanderson (address@hidden)

Script started on Fri Mar  3 13:17:36 2006
$ cat foo.c
#ifdef l
#undef l
#endif

#ifdef u
#undef u
#endif

#ifdef v
#undef v
#endif

int l = 1;
int u = 1;
int v = 1;

int main(void)
{
    return l+u+v;
}
$ mkid
$ gid l
$ gid u
$ gid v
foo.c:9:#ifdef v
foo.c:10:#undef v
foo.c:15:int v = 1;
foo.c:19:    return l+u+v;
$ exit

Script done on Fri Mar  3 13:17:51 2006