Question

I ve got a perplexing Vim problem. If I start editing a new file, say with vim test.txt, and I type in the word "do" and hit enter (while still in insert mode), the next line is automatically indented. Before giving a quick answer, please read this whole post.

两个问题:

Why might this happen?
How can I debug the startup process (reading ~/.vimrc and files in ~/.vim/)?

更多信息:

Here s my .vimrc: http://dotfiles.org/~meonkeys/.vimrc.
"do", "if", and "switch" all cause indenting, but I still haven t figured out what language Vim is using indent rules for.
I do have a bunch of stuff in ~/.vim/. Here s that: http://adammonsen.com/tmp/dot_vim.tgz
I can t find anything in my ~/.vimrc or ~/.vim/ that should turn on some kind of indenting even if filetype is unset!
If I start Vim using vim -u /dev/null test.txt, the problem goes away.
Yes, I know about the autoindent setting. I don t think this is the problem because turning on autoindent after using a null vimrc doesn t indent the line after "do" is typed in.

Answer 1

 smartindent   si       boolean (default off)
                        local to buffer
                        {not in Vi}
                        {not available when compiled without the
                        |+smartindent| feature}
        Do smart autoindenting when starting a new line.  Works for C-like
        programs, but can also be used for other languages.   cindent  does
        something like this, works better in most cases, but is more strict,
        see |C-indenting|.  When  cindent  is on, setting  si  has no effect.
         indentexpr  is a more advanced alternative.
        Normally  autoindent  should also be on when using  smartindent .
        An indent is automatically inserted:
        - After a line ending in  { .
        - After a line starting with a keyword from  cinwords .
        - Before a line starting with  }  (only with the "O" command).

word语指:

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