Bob Hanson wrote:
> OK, upon rereading this thread, especially Rolf's earliest post, and 
> thinking more about what SELECT a-b should mean, and what insertions 
> are, and all that, I do agree that the first solution I had in mind and 
> put into 11.5.30 is not a good idea. What if we just went with Eric's 
> initial idea, but not in the sense of resno >=/<=. I agree with Rolf 
> that that will really mess up scripts, and I agree with Eric that what 
> we have now is not intuitive. But I disagree with Rolf that the behavior 
> should be different depending upon what the file is like. That to me 
> seems like it would be totally opaque behavior to a user.
> 

That was one of my earlier ideas but not my last proposal.

> It seems to me what we have now is just about right, except we should 
> allow for missing end groups. Then no scripts will be affected, because 
> surely no one has a script that selects 0 atoms (11.5.29 behavior) or 
> expects that.
> 
> Taking Eric's example (2rd0):
> 
> (505,528,529,530)
> 
> Do we all agree that
> 
> select 520-530 should select 3 groups (as Rasmol)?
> 

I agree.

> Taking Rolf's example with 1ak4:
> 
> (27,1027,2027,3027,4027,5027,28)
> 
> 
> Do we all agree that 
> 
> 
> select 27-28 should select all of these?
> 
> select 27-2027 should select just the first three?
> 
> select 5027-28 should select the last two?
> 

I agree.

> 
> And insertions (1jgq):
> 
> (1031,1032,1032^A,1032^B,1033)
> 
> Do we all agree that
> 
> select 1031-1033 should select all?
> 
> select 1031-1032^A should select just the first 3?
> 
> select 1031-1032^C should select... what? perhaps the first 4?
> 

I agree.

Regards,
Rolf

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