diff options
Diffstat (limited to 'plugin/insert_cancel.vim')
| -rw-r--r-- | plugin/insert_cancel.vim | 22 |
1 files changed, 8 insertions, 14 deletions
diff --git a/plugin/insert_cancel.vim b/plugin/insert_cancel.vim index f722ac8..f0d8443 100644 --- a/plugin/insert_cancel.vim +++ b/plugin/insert_cancel.vim @@ -1,9 +1,8 @@ " -" insert_cancel.vim: Cancel the current insert operation by undoing the last -" change upon insert exit, if we made a change; intended for remapping -" insert-mode Ctrl-C to do something useful. -" -" This was *way* harder to figure out than it looks. +" insert_cancel.vim: Insert mode mapping to cancel the current insert +" operation by undoing the last change upon insert exit, if we made a change, +" without firing InsertLeave. This is intended for remapping Ctrl-C in insert +" mode to do something more useful. " " Author: Tom Ryder <tom@sanctum.geek.nz> " License: Same as Vim itself @@ -13,18 +12,13 @@ if exists('loaded_insert_cancel') || &compatible || v:version < 700 endif let loaded_insert_cancel = 1 -" Set up the hooks described for the functions above, if Vim is new enough to -" support all the hooks required +" Each time the cursor moves in normal mode, cache the current change number augroup insert_cancel autocmd! - autocmd InsertEnter * - \ call insert_cancel#Enter() - autocmd InsertLeave * - \ call insert_cancel#Check() autocmd CursorMoved * \ let b:insert_cancel_changenr = changenr() augroup END -" Mapping that exits insert mode normally and checks for a change to undo -inoremap <silent> <Plug>(InsertCancel) - \ <Esc>:<C-U>call insert_cancel#Cancel()<CR> +" Undo any changes if they exceed the cached number on insert map key press +inoremap <expr> <Plug>(InsertCancel) + \ changenr() > b:insert_cancel_changenr ? "\<C-C>u" : "\<C-C>" |