Marc Weber wrote:

>> Joining lines by backslash in Vim scripts are bits slow.
>> Currently, it call alloc/strcpy/strcat/free in each lines.
>
> If you are at it - would you mind spending some additional minutes on
> the join() command?
> Maybe it can be fixed equally fast.
> Its very slow as well - that slow that we use workarounds in VAM:
> https://github.com/MarcWeber/vim-addon-manager-known-repositories/blob/master/autoload/vamkr.vim
> line 13 is much faster than line 14.
>
> line 5 shows one way to benchmark it.
>
> Marc Weber

Hi Marc

Is that still really true?
I remember that speed speed of joining lines was slow [ O(n^2) ]
(where n is the number of lines to join) and it was fixed in Vim-7.3
in this checkin:

===
changeset:   2292:2209060c340d
branch:      vim73
user:        Bram Moolenaar <[email protected]>
date:        Sat Jul 10 17:51:46 2010 +0200
files:       runtime/doc/todo.txt src/edit.c src/ex_docmd.c
src/normal.c src/ops.c src/proto/ops.pro
description:
Make joining a range of lines much faster. (Milan Vancura)
===

Regards
-- Dominique

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