Vim: check if running as a pager

问题

I searched through Vim's source repository (which includes help doc too) for any references to pager but couldn't find so asking here- Is there a way to see if vim is running as a pager? I'd like to run certain commnands automatically when that happens.

EDIT: By pager, I mean vim reading from stdin when piped as vim -. I use a plugin called AnsiEsc mentioned in another vim related question so would like to load that automatically. I would also like to remap some keybindings.

回答1:

You should be able to register an autocommand on StdinReadPre or Post. e.g.

" .vimrc
aug StdIn
  au! 
  au StdinReadPost * echomsg "In pager mode!"
aug END

I don't see anything else in Vim.

回答2:

The StdinReadPost (TIL) seems to be perfect for your use case but well, here is a makeshift alternative:

augroup pager
    autocmd!
    autocmd VimEnter * if v:statusmsg =~ 'stdin' | echomsg "is pager" | endif
augroup END

来源：https://stackoverflow.com/questions/39470081/vim-check-if-running-as-a-pager