如何在Vim的同一文件中“区分”两个子程序？ [英] How to ‘diff’ two subroutines in the same file in Vim?

问题描述

是否可以对同一文件中出现的两个非常相似的子例程进行 diff 甚至 vimdiff ？如果可以，怎么办？

Is it possible to diff or even vimdiff two very similar subroutines occurring in the same file? If so, how?

我可以考虑将两个子例程复制到两个单独的文件中，然后复制它们 diff ，但是是否有一个

I can think of copying the two subroutines in two separate files and then diff them, but is there a way to do it within the original file?

推荐答案

您无法在原始文件中执行此操作，但是您可以在不使用的情况下执行此操作单独的文件，只有单独的缓冲区。如果您在寄存器 a 中复制了一个子例程（例如，在可视模式下键入" ay }和寄存器中的其他子例程 b

You cannot do this within the original file, but you can do this without using separate files, only separate buffers. This should work if you copied one subroutine in register a (for example, with "ay typed in Visual mode) and other subroutine in register b:

enew | call setline(1, split(@a, "\n")) | diffthis | vnew | call setline(1, split(@b, "\n")) | diffthis

要自动化：

let g:diffed_buffers = []

function DiffText(a, b, diffed_buffers)
    enew
    setlocal buftype=nowrite
    call add(a:diffed_buffers, bufnr('%'))
    call setline(1, split(a:a, "\n"))
    diffthis
    vnew
    setlocal buftype=nowrite
    call add(a:diffed_buffers, bufnr('%'))
    call setline(1, split(a:b, "\n"))
    diffthis
endfunction

function WipeOutDiffs(diffed_buffers)
    for buffer in a:diffed_buffers
        execute 'bwipeout! ' . buffer
    endfor
endfunction

nnoremap <special> <F7> :call DiffText(@a, @b, g:diffed_buffers)<CR>
nnoremap <special> <F8> :call WipeOutDiffs(g:diffed_buffers) | let g:diffed_buffers=[]<CR>

请注意，如果Vim拒绝，您可能想设置 hidden 选项放弃更改的文件（请参见：h放弃）。

Note that you may want to set hidden option if Vim refuses to abandon changed file (see :h abandon).

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