Re: Request for pointers and advice: displaying several buffers inside a single window

[Ihor Radchenko <yantar92@gmail.com>]

> So there's one more parameter, in addition to the offset?

Sure, there should be at least two parameters to define segment. I am
thinking aloud here. Started with rough idea. I think Dmitrii just
described similar approach and also did some source code lookup. 

> Sounds like a thorough surgery of all the low-level functions that
> handle insertion, deletion, replacement etc.

Yeah. Also, regions, markers, and point motion.

Eli Zaretskii <eliz@gnu.org> writes:

>> From: Ihor Radchenko <yantar92@gmail.com>
>> Cc: casouri@gmail.com, dim1212k@gmail.com, adam@alphapapa.net,
>>  emacs-devel@gnu.org
>> Date: Sat, 11 Apr 2020 02:37:13 +0800
>> 
>> > So a "segment" is a part of buffer text that starts from some offset,
>> > and then goes on until the end of the buffer text?  IOW, the beginning
>> > is different, but the end is the same?
>> 
>> I would rather say that "segment" is a text between two markers in an
>> arbitrary buffer.
>
> So there's one more parameter, in addition to the offset?
>
>> > If so, how is this different from narrowing in indirect buffers that
>> > we have now?
>> 
>> The difference is that text in a single buffer must not always be coming
>> from a single buffer (possibly narrowed), but can as well be a list of
>> "segments". Instead of storing all the buffer text in a single char
>> array, the buffer text could be represented by a list of "segments". In
>> a normal buffer, this list will just contain a single element pointing
>> to the buffer's char array containing its text. However, the list can be
>> extended with "segments" from other buffers.
>
> Sounds like a thorough surgery of all the low-level functions that
> handle insertion, deletion, replacement etc.
>
> And what do you suggest to do with the gap?

-- 
Ihor Radchenko,
PhD,
Center for Advancing Materials Performance from the Nanoscale (CAMP-nano)
State Key Laboratory for Mechanical Behavior of Materials, Xi'an Jiaotong University, Xi'an, China
Email: yantar92@gmail.com, ihor_radchenko@alumni.sutd.edu.sg