On Jan 7, 3:57 pm, Taylor Hedberg <[email protected]> wrote:
> It's important to recognize that Vim makes a distinction between
> readonly and nomodifiable options. Setting readonly will prevent you
> from saving the buffer unless you type ":w!" (with the exclamation
> point). Setting nomodifiable, on the other hand, will prevent you from
> even entering insert mode or modifying the buffer itself in any way.
>
> You can open a file with readonly set by using the :view command, but it
> will still be modifiable unless you explicitly :set nomodifiable. As far
> as opening a file with nomodifiable already set, I'm not aware of any
> command that does that (though that doesn't mean there isn't one).
There is also :sview to split a window in readonly mode.
You can force nomodifiable whenever a buffer opens read-only with this
autocmd from my .vimrc:
" set readonly files to also be non-modifiable by default, and
others to be
" modifiable by default
autocmd BufRead,BufWinEnter * if &ft!='qf' | let &l:modifiable =
(&readonly ? 0 : 1) | endif
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