diff options
| author | jdhao <jdhao@hotmail.com> | 2020-11-24 22:55:39 +0800 |
|---|---|---|
| committer | jdhao <jdhao@hotmail.com> | 2020-11-24 22:55:39 +0800 |
| commit | 9a7ac4c9d191117aa86808de8c056338bca1dc09 (patch) | |
| tree | 42efcb86b31953a037aa365ba9776f3adde7691b | |
| parent | 3e25d9283e240c5ebfe195d6edd871b5279252eb (diff) | |
Using jk to escape insert mode without lagging.
See https://jdhao.github.io/2020/11/23/neovim_better_mapping_for_leaving_insert_mode/.
| -rw-r--r-- | autoload/utils.vim | 30 | ||||
| -rw-r--r-- | core/mappings.vim | 2 |
2 files changed, 31 insertions, 1 deletions
diff --git a/autoload/utils.vim b/autoload/utils.vim index c0eab5f..4bab8b9 100644 --- a/autoload/utils.vim +++ b/autoload/utils.vim @@ -145,3 +145,33 @@ function! utils#Get_titlestr() abort return l:title_str endfunction + +function! utils#EscapeInsertOrNot() abort + " If k is preceded by j, then remove j and go to normal mode. + let line_text = getline('.') + let cur_ch_idx = utils#CursorCharIdx() + let pre_char = utils#CharAtIdx(line_text, cur_ch_idx-1) + if pre_char ==# 'j' + return "\<BS>\<ESC>" + else + return 'k' + endif +endfunction + +function! utils#CharAtIdx(str, idx) abort + " Get char at idx from str. Note that this is based on character index + " instead of the byte index. + return strcharpart(a:str, a:idx, 1) +endfunction + +function! utils#CursorCharIdx() abort + " See https://vi.stackexchange.com/a/28144/15292 + " A more concise way to get character index under cursor. + let cursor_byte_idx = col('.') + if cursor_byte_idx == 1 + return 0 + endif + + let pre_cursor_text = getline('.')[:col('.')-2] + return strchars(pre_cursor_text) +endfunction diff --git a/core/mappings.vim b/core/mappings.vim index abcd18c..ee51d53 100644 --- a/core/mappings.vim +++ b/core/mappings.vim @@ -9,7 +9,7 @@ xnoremap ; : nnoremap q; q: " Quicker <Esc> in insert mode -inoremap jk <Esc> +inoremap <expr> k utils#EscapeInsertOrNot() " Turn the word under cursor to upper case inoremap <c-u> <Esc>viwUea |