Comment 4 for bug 1488939

The parameter parsing for the bash builtins is based on this:
   #define ISOPTION(s, c) (s[0] == '-' && !s[2] && s[1] == c)

In addition the -- is used to recognize negative numbers to signify process groups instead of just a process.

This is rather unusable for lonopts, but at least the -L could be coded without being too invasive.