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fix(update_listing_in_buffer): don't update listing if there are no changes

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Before updating a listing, check if the update differs from the existing state.
Only then update the buffer, otherwise return early.

Initial reasoning: If `let g:vimwiki_auto_toc = 1` is set, saving a buffer would always update
the `contents`-section, even if there were no updates in this section. This lead to undesired
undo-behavior.

NOTE: this fix was only tested for the toc-listing.
This commit is contained in:
Tobias Mersmann
2021-07-18 12:39:52 +02:00
committed by Tinmarino
parent 2141fde8b8
commit 1bea2ce40a
1 changed files with 6 additions and 0 deletions
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autoload/vimwiki/base.vim
+6
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@@ -1521,6 +1521,12 @@ function! vimwiki#base#update_listing_in_buffer(Generator, start_header,
" them right back. " them right back.
let foldenable_save = &l:foldenable let foldenable_save = &l:foldenable
setlocal nofoldenable setlocal nofoldenable
" don't update file if there are no changes
if (join(getline(start_lnum + 2, end_lnum - 1), "") == join(a:Generator.f(), ""))
return
endif
silent exe 'keepjumps ' . start_lnum.','.string(end_lnum - 1).'delete _' silent exe 'keepjumps ' . start_lnum.','.string(end_lnum - 1).'delete _'
let &l:foldenable = foldenable_save let &l:foldenable = foldenable_save
let lines_diff = 0 - (end_lnum - start_lnum) let lines_diff = 0 - (end_lnum - start_lnum)