[Info-vax] Why does this DIFF command fail, then run fine the 2nd time around?

[Fred. Zwarts]

Op 13.dec..2022 om 01:25 schreef Dave Froble:

> 
> I have no problem with the basic filespec stuff.  I actually prefer the 
> "[a.b.c]" directory specification over "/A/B/C", but I do understand the 
> latter might be easier to parse.  Don't know, never used it much.  Don't 
> like it.
> 

One of the problems is that there is so much more than the basic 
filespec stuff. Mostly because of compatibility with older specs.
Apart from [a.b.c] there is <a.b.c> and [200,172], which becomes very 
'interesting' when mixed, e.g. the rooted logical names uses <> and the 
remainder uses [], not only interesting to parse it, but also to apply 
it to a related filespec.
In addition there are logical names that can be concealed or not, or 
terminal, or not. A lot of room for bugs.