vim/plugin/BufClose.vim @ a0450320e4bc

" BufClose.vim  -  Close a buffer without closing the window it's in.
"
" Copyright February 2003 by Christian J. Robinson <infynity@onewest.net>
"
" Distributed under the terms of the Vim license.  See ":help license".

" Usage:
"
" :BufClose[!] [buffer]
"
" Without any arguments the current buffer in the current window is closed.
" With an argument that buffer is closed if it exists and is currently being
" displayed in a window.
"
" The buffer argument can be a buffer name or number.
"
" In both cases if the buffer is modified you have to use ! or an error will
" be issued and the buffer will be left loaded.
"
" Configuration:
"
" g:BufClose_AltBuffer
"
" Set this variable if you don't want a blank buffer to be loaded in place of
" the buffer being closed.  Examples:
"
"   :let g:BufClose_AltBuffer = '#'
"
" This will cause :BufClose to load the alternate buffer.  See ":help :_#".
"
"   :let g:BufClose_AltBuffer = '.'
"
" This will cause :BufClose to load the current directory in the file
" explorer.

command! -nargs=? -complete=buffer -bang BufClose
    \ :call BufClose(expand('<args>'), expand('<bang>'))

function! BufClose(buffer, bang)
    if a:buffer == ''
		" No buffer provided, use current buffer in the current window.
        let buffer = bufnr('%')
	elseif (a:buffer + 0) > 0
		" A buffer number was provided.
        let buffer = bufnr(a:buffer + 0)
	else
		" A buffer name was provided.
        let buffer = bufnr(a:buffer)
    endif

    if buffer == -1
        echohl ErrorMsg
        echomsg "No matching buffer for" a:buffer
        echohl None
        return
    endif

    let current_window = winnr()
    let buffer_window = bufwinnr(buffer)

    if buffer_window == -1
        echohl ErrorMsg
        echomsg "Buffer" buffer "isn't open in any windows."
        echohl None
        return
    endif

    if a:bang == '' && getbufvar(buffer, '&modified')
        echohl ErrorMsg
        echomsg 'No write since last change for buffer'
            \ buffer '(add ! to override)'
        echohl None
        return
    endif

	" Move to the proper window if necessary, open a blank buffer,
    " then move back to the original window...
    if buffer_window >= 0
		if current_window == buffer_window
            if exists('g:BufClose_AltBuffer')
                exe 'e' . a:bang . ' ' . g:BufClose_AltBuffer
            else
                exe 'enew' . a:bang
            endif
		else
			exe 'norm ' . buffer_window . "\<C-w>w"
            if exists('g:BufClose_AltBuffer')
                exe 'e' . a:bang . ' ' . g:BufClose_AltBuffer
            else
                exe 'enew' . a:bang
            endif
			exe 'norm ' . current_window . "\<C-w>w"
		endif
    endif

	" ...and delete the specified buffer.
    silent exe 'bdel' . a:bang . ' ' . buffer
endfunction