（问题改编自我如何将emacs'；emergence中冲突的两种变体结合起来？）
我有一个带有合并冲突标记的文件。它看起来像这样：
<<<<<<< HEAD
522ADC9C14B2FD9D00F56BAD /* close_test_button.png in Resources */,
522ADC9D14B2FD9D00F56BAD /* close_test_button@2x.png in Resources */,
522ADCA014B2FDB100F56BAD /* test_failed.png in Resources */,
522ADCA114B2FDB100F56BAD /* test_failed@2x.png in Resources */,
=======
EC1633C014B2F3E3004B52E7 /* arrow.png in Resources */,
EC1633C114B2F3E3004B52E7 /* arrow@2x.png in Resources */,
EC1633C214B2F3E3004B52E7 /* groups.png in Resources */,
EC1633C314B2F3E3004B52E7 /* groups@2x.png in Resources */,
>>>>>>> beta_2.8
我使用M-x vc解决冲突来启动Ediff。我可以通过在键盘上点击A或B来选择变体A或者B，但是我如何将这两个变体一个接一个地组合起来呢？
这与Trey Jackson的有用答案是一样的，而且要简单得多。按d将A和B复制到缓冲区C。
(defun ediff-copy-both-to-C ()
(interactive)
(ediff-copy-diff ediff-current-difference nil 'C nil
(concat
(ediff-get-region-contents ediff-current-difference 'A ediff-control-buffer)
(ediff-get-region-contents ediff-current-difference 'B ediff-control-buffer))))
(defun add-d-to-ediff-mode-map () (define-key ediff-mode-map "d" 'ediff-copy-both-to-C))
(add-hook 'ediff-keymap-setup-hook 'add-d-to-ediff-mode-map)
您可以切换到缓冲区"C"并对其进行编辑。如果您已经选择了A或B来恢复差异，请按+。
如果你想要的是按下一个键来自动删除差异标记，我只能说这似乎是一个可怕的想法。
手动合并应由用户决定。删除每个差异区域来自哪里的线索对我来说并不合适。
您可以自定义标记为空行：
M-：
(setq ediff-combination-pattern '("" A "" B "" Ancestor))
是的，我完全想这么做！对于下面的代码块，您可以通过键入d来同时获得这两个代码，这将从合并缓冲区中的缓冲区A和缓冲区B（按顺序）获得代码。
这段代码中唯一真正的困难是ediff在一个地方使用了一个宏，并且需要用新的宏重新评估函数的编译版本。不管怎样，试一下代码。使用Emacs 23.2进行测试。
(require 'ediff-init) ;ensure the macro is defined, so we can override it
(defmacro ediff-char-to-buftype (arg)
`(cond ((memq ,arg '(?a ?A)) 'A)
((memq ,arg '(?b ?B)) 'B)
((memq ,arg '(?c ?C)) 'C)
((memq ,arg '(?d ?D)) 'D)
))
(require 'ediff)
;; Literally copied from ediff-util
;; need to re-evaluate because it uses the macro defined above
;; and the compiled version needs to be re-compiled with the new definition
;; why a macro????
(defun ediff-diff-to-diff (arg &optional keys)
"Copy buffer-X'th difference region to buffer Y (X,Y are A, B, or C).
If numerical prefix argument, copy the difference specified in the arg.
Otherwise, copy the difference given by `ediff-current-difference'.
This command assumes it is bound to a 2-character key sequence, `ab', `ba',
`ac', etc., which is used to determine the types of buffers to be used for
copying difference regions. The first character in the sequence specifies
the source buffer and the second specifies the target.
If the second optional argument, a 2-character string, is given, use it to
determine the source and the target buffers instead of the command keys."
(interactive "P")
(ediff-barf-if-not-control-buffer)
(or keys (setq keys (this-command-keys)))
(if (eq arg '-) (setq arg -1)) ; translate neg arg to -1
(if (numberp arg) (ediff-jump-to-difference arg))
(let* ((key1 (aref keys 0))
(key2 (aref keys 1))
(char1 (ediff-event-key key1))
(char2 (ediff-event-key key2))
ediff-verbose-p)
(ediff-copy-diff ediff-current-difference
(ediff-char-to-buftype char1)
(ediff-char-to-buftype char2))
;; recenter with rehighlighting, but no messages
(ediff-recenter)))
(defun ediff-copy-D-to-C (arg)
"Copy ARGth difference region from both buffers A and B to C.
ARG is a prefix argument. If nil, copy the current difference region."
(interactive "P")
(ediff-diff-to-diff arg "dc"))
(defun ediff-copy-diff (n from-buf-type to-buf-type
&optional batch-invocation reg-to-copy)
(let* ((to-buf (ediff-get-buffer to-buf-type))
;;(from-buf (if (not reg-to-copy) (ediff-get-buffer from-buf-type)))
(ctrl-buf ediff-control-buffer)
(saved-p t)
(three-way ediff-3way-job)
messg
ediff-verbose-p
reg-to-delete reg-to-delete-beg reg-to-delete-end)
(setq reg-to-delete-beg
(ediff-get-diff-posn to-buf-type 'beg n ctrl-buf))
(setq reg-to-delete-end
(ediff-get-diff-posn to-buf-type 'end n ctrl-buf))
(if (eq from-buf-type 'D)
;; want to copy *both* A and B
(if reg-to-copy
(setq from-buf-type nil)
(setq reg-to-copy (concat (ediff-get-region-contents n 'A ctrl-buf)
(ediff-get-region-contents n 'B ctrl-buf))))
;; regular code
(if reg-to-copy
(setq from-buf-type nil)
(setq reg-to-copy (ediff-get-region-contents n from-buf-type ctrl-buf))))
(setq reg-to-delete (ediff-get-region-contents
n to-buf-type ctrl-buf
reg-to-delete-beg reg-to-delete-end))
(if (string= reg-to-delete reg-to-copy)
(setq saved-p nil) ; don't copy identical buffers
;; seems ok to copy
(if (or batch-invocation (ediff-test-save-region n to-buf-type))
(condition-case conds
(progn
(ediff-with-current-buffer to-buf
;; to prevent flags from interfering if buffer is writable
(let ((inhibit-read-only (null buffer-read-only)))
(goto-char reg-to-delete-end)
(insert reg-to-copy)
(if (> reg-to-delete-end reg-to-delete-beg)
(kill-region reg-to-delete-beg reg-to-delete-end))
))
(or batch-invocation
(setq
messg
(ediff-save-diff-region n to-buf-type reg-to-delete))))
(error (message "ediff-copy-diff: %s %s"
(car conds)
(mapconcat 'prin1-to-string (cdr conds) " "))
(beep 1)
(sit-for 2) ; let the user see the error msg
(setq saved-p nil)
)))
)
;; adjust state of difference in case 3-way and diff was copied ok
(if (and saved-p three-way)
(ediff-set-state-of-diff-in-all-buffers n ctrl-buf))
(if batch-invocation
(ediff-clear-fine-differences n)
;; If diff3 job, we should recompute fine diffs so we clear them
;; before reinserting flags (and thus before ediff-recenter).
(if (and saved-p three-way)
(ediff-clear-fine-differences n))
(ediff-refresh-mode-lines)
;; For diff2 jobs, don't recompute fine diffs, since we know there
;; aren't any. So we clear diffs after ediff-recenter.
(if (and saved-p (not three-way))
(ediff-clear-fine-differences n))
;; Make sure that the message about saving and how to restore is seen
;; by the user
(message "%s" messg))
))
;; add keybinding in a hook b/c the keymap isn't defined until the hook is run
(add-hook 'ediff-keymap-setup-hook 'add-d-to-ediff-mode-map)
(defun add-d-to-ediff-mode-map ()
(define-key ediff-mode-map "d" 'ediff-copy-D-to-C))
vc resolve conflicts的文档字符串表示它是smerge depuf。
如果这像我预期的那样工作，那么你的缓冲区应该处于smerge次要模式，并且应该有smerge的菜单。菜单上有你需要的一切。