> On 9 Sep 2018, at 21:20, Eli Zaretskii via Unicode <[email protected]> > wrote: > > In Emacs, the gap is always where the text is inserted or deleted, be > it in the middle of text or at its end. > >> All editors I have seen treat the text as ordered collections of small >> buffers (these small buffers may still have >> small gaps), which are occasionnally merged or splitted when needed (merging >> does not cause any >> reallocation but may free one of the buffers), some of them being paged out >> to tempoary files when memory is >> stressed. There are some heuristics in the editor's code to when >> mainatenance of the collection is really >> needed and useful for the performance. > > My point was to say that Emacs is not one of these editors you > describe.
FYI, gap and rope buffers are described at [1-2]; also see the Emacs manual [3]. 1. https://en.wikipedia.org/wiki/Gap_buffer 2. https://en.wikipedia.org/wiki/Rope_(data_structure) 3. https://www.gnu.org/software/emacs/manual/html_node/elisp/Buffer-Gap.html
