Problem:    A sequence of spaces is hard to see in list mode.
Solution:   Add the "multispace" option to 'listchars'. (closes vim/vim#8834)
https://github.com/vim/vim/commit/f14b8ba1373f569705cb80419248054100b02360

Problem:    screenstring() returns non-existing composing characters.
Solution:   Only use composing characters if there is a base character.
https://github.com/vim/vim/commit/f1387285e2ebe5cb3688d729fc6fd01a169a76c1

Problem:    Composing chars on space wrong when 'listchars' is set.
Solution:   Do not use "space" and "nbsp" entries of 'listchars' when there is
            a composing character.  (Yee Cheng Chin, closes vim/vim#4197)
https://github.com/vim/vim/commit/e5e4e22c1c15c8c22b14935affe969569acc8df9

Problem:    No need for a separate ScreenLinesUtf8() test function.
Solution:   Get the composing characters with ScreenLines().
https://github.com/vim/vim/commit/48aed0824e47147faf19fc235ad4bcf851584c9c

Problem:    When 'listchars' is set a composing char on a space is wrong.
Solution:   Separate handling a non-breaking space and a space. (Yasuhiro
            Matsumoto, closes vim/vim#4046)
https://github.com/vim/vim/commit/5f8069bbf5d989936a2f4d7a76ae42434017e3a2

Problem:    Cannot get composing characters from the screen.
Solution:   Add screenchars() and screenstring(). (partly by Ozaki Kiichi,
            closes vim/vim#4059)
https://github.com/vim/vim/commit/2912abb3a2fd72074e3901c8ae1d4a77ce764675

Problem:    Filler lines are wrong when changing text in diff mode.
Solution:   Don't change the filler lines on every change.  Check
            scrollbinding when updating the filler lines. (closes vim/vim#8809)
https://github.com/vim/vim/commit/04626c243c47af91c2580eaf23e12286180e0e81

Now remove the addition of "start/*" packages in 'packpath' as
explicit items in 'runtimepath'. This avoids 'runtimepath' from becoming
very long when using a lot of plugins as packages.

To get the effective search path as a list, use |nvim_list_runtime_paths()|

vim-patch:8.2.{3286,3289,3293,3298,3313,3321,3328,3330,3331,3337,3354,3355,3357,3360,3369,3375}

vim-patch:8.2.{3378,3379,3384,3386,3398,3400}