When the cursor is placed at the end of a line containing nothing but withspace characters, vim will, when i press enter, remove that whitespace. I find this irritating, as it breaks my script for selecting code that are indented to the same level. How can I prevent vim from doing this?
In my .vimrc (http://bjuhn.com/randomstuff/vimrc) I have the following:
filetype plugin on
set copyindent
that is, I am not using any syntax-aware auto-indention, as I have yet to find one that does everything to my liking.
The Vim wiki suggests this:
inoremap <CR> <CR>x<BS>
because the indenting is not removed if some text has been entered on the line, even if it has been deleted.
[EDIT - milimetric]
Just a couple of pieces missing from a full solution. You also need remaps for o and O and whatever else you use to add lines:
inoremap <CR> <CR>x<BS>
nnoremap o ox<BS>
nnoremap O Ox<BS>
Same idea but people newer to vim might not figure it out quickly.
For me this code works:
inoremap <silent> <Esc> <C-O>:stopinsert<CR>
来源：https://stackoverflow.com/questions/7413036/stopping-vim-from-removing-indentation-on-empty-lines