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vim:keys: Add insert mappings for better undo

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The bigger `inoremap <expr> ...` binding is taken from the help page
`:help i_ctrl-g_u`.
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druckdev
2022-01-20 16:05:47 +01:00
parent 2dcece04f3
commit 8ffd4df1fa
1 changed files with 19 additions and 0 deletions
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19
.config/vim/vimrc.d/40-keys.vim
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@@ -130,3 +130,22 @@ inoremap <silent> <A-Down> <Esc>:m .+1<CR>==gi
" Fix & command to also use last flags
nnoremap & :&&<CR>
xnoremap & :&&<CR>
" see :help i_ctrl-g_u
" Do not break undo sequence when using the arrow keys or home and end in insert
" mode
inoremap <Left> <C-G>U<Left>
inoremap <Right> <C-G>U<Right>
inoremap <expr> <Home> col('.') == match(getline('.'), '\S') + 1 ?
\ repeat('<C-G>U<Left>', col('.') - 1) :
\ (col('.') < match(getline('.'), '\S') ?
\ repeat('<C-G>U<Right>', match(getline('.'), '\S') + 0) :
\ repeat('<C-G>U<Left>', col('.') - 1 - match(getline('.'), '\S')))
inoremap <expr> <End> repeat('<C-G>U<Right>', col('$') - col('.'))
" Make insert-mode texts repeatable by `.` with the closing parentheses at the
" right position
inoremap ( ()<C-G>U<Left>
" break undo sequence with every space and newline, making insert mode changes
" revertible in smaller chunks
inoremap <Space> <C-G>u<Space>
inoremap <CR> <C-G>u<CR>