patch 8.0.0190: finding duplicate tags uses a slow linear search commit https://github.com/vim/vim/commit/810f9c361c83afb36b9f1cdadca2b93f1201d039 Author: Bram Moolenaar <Bram@vim.org> Date: Sun Jan 15 16:52:51 2017 +0100 patch 8.0.0190: finding duplicate tags uses a slow linear search Problem: Detecting duplicate tags uses a slow linear search. Solution: Use a much faster hash table solution. (James McCoy, closes https://github.com/vim/vim/issues/1046) But don't add hi_keylen, it makes hash tables 50% bigger.

Test changelist position after splitting window
Set 'undolevels' to make changelist for sourced file

STARTTEST
:so small.vim
Gkylp:set ul=100
Gylp:set ul=100
gg
:vsplit
:try
:  normal g;
:  normal ggVGcpass
:catch
:  normal ggVGcfail
:finally
:  %w! test.out
:endtry
:qa!
ENDTEST

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