On Sun, Jun 09, 2024 at 07:37:14PM +0200, Antonio Diaz Diaz wrote: > It is simple. Posix states that for an option with a mandatory > option-argument, as with '-p <string>', the following two forms must be > equivalent: > > -p <string> > -p<string> > > This is only possible if <string> is not the empty string. > > So, AFAICT, ed's current behavior is the only one that meets the above POSIX > requirement.
I am sorry, but I really can't understand how your logic even makes sense: ed -p '' foo is not equivalent to ed -p'' foo in GNU ed. Just like ed -p foo (i.e. ed -p'' foo ) is not equivalent to ed -p '' foo in GNU ed. Anyway you can only see an ambiguity if you grossly misinterpret the text, I just can't see it. Both the text of getopt and utility syntax guidelines are just saying that -pfoo should be accepted as equivalent to -p foo o/ emanuele6
