> > IMHO that is the expected outcome for an optional command line argument. 
> If you 
> > don't want the command line parsing to end (and not treat "directory..." 
> as 
> > value) then you should use 
> > 
> > sage -n -- directory=sage.sagenb 
>
> I'd appreciate if we would have a deprecation warning if a user tries to 
> use the 
> old behaviour (i.e., adding options immediately after -n, not knowing that 
> there 
> are  "-n default", "-n ipython", "-n sagenb" nowadays?). 
>


Just for reference, the current status is 
at http://trac.sagemath.org/ticket/17280 .  Clemens, this still won't 
support the syntax you and others are used to...

> Well, if a (potential) argument follows '-n', but doesn't match any 
of 'ipython', 'sagenb', nor 'default', we should probably default 
to 'default'... ;-)  (Not to mention it contains an equals sign in the 
case here, such that it's pretty clear what's meant, or not meant.) 

Yeah, I kind of agree, since even though "it's not a hand-written parser" 
it still is an API change.

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