Commit 0f3d1b78 authored by Tino Calancha's avatar Tino Calancha
Browse files

Show ancestor buffer in 3way merges

Add an option ediff-show-ancestor', to control if the ancestor buffer
must be shown in 3way merges (Bug#25493); set it non-nil by default.
Add a toggle to change this option interactively; the original
value of the option is restored on exit.

Update the window setup so that the ancestor buffer is
shown in 3way merges when ediff-show-ancestor is non-nil.

Any operation on ediff windows must take in account the
ancestor window as well, when this is shown.

* lisp/vc/ediff-init.el (ediff-show-ancestor): New option.
(ediff--show-ancestor-orig): New defvar.
* lisp/vc/ediff-wind.el (ediff-window-Ancestor): New defvar.
(ediff-setup-windows-plain-merge, ediff-setup-windows-multiframe-merge):
Display ancestor buffer if ediff-show-ancestor is non-nil.
(ediff-keep-window-config): Expect ancestor window in
ediff-window-config-saved.
(ediff-window-alist): Add entry for the ancestor window.
* lisp/vc/ediff-util.el (ediff-setup-control-buffer):
ediff-window-config-saved contains ancestor window.
(ediff-show-ancestor): Delete this command.
(ediff-setup-keymap): Bind ediff-toggle-show-ancestor to '/' for merge jobs.
(ediff-update-diffs): Compute new diffs using ancestor buffer in 3way merges;
don't cheat it to think that is performing a comparison, that trick is not
necessary anymore: simply call 'ediff-setup-diff-regions-function'
with file-A, file-B and the file ancestor.
(ediff-recenter): Update doc string.  Consider the ancestor buffer.
(ediff--check-ancestor-exists): New defun.
(ediff-toggle-show-ancestor): New command; toggle ediff-show-ancestor.
(ediff--restore-options-on-exit): Restore ediff-show-ancestor on exit.
(ediff-scroll-vertically, ediff-scroll-horizontally)
(ediff-operate-on-windows): Consider the ancestor as well.
* lisp/vc/ediff-help.el (ediff-long-help-message-merge):
List ediff-toggle-show-ancestor.
* doc/misc/ediff.texi (Introduction, Quick Help Commands): Update manual.
; * etc/NEWS: Announce these changes.
parent e39d5934
......@@ -99,7 +99,8 @@ through them. You can also copy difference regions from one buffer to
another (and recover old differences if you change your mind).
Another powerful feature is the ability to merge a pair of files into a
third buffer. Merging with an ancestor file is also supported.
third buffer. Merging with an ancestor file, (a.k.a. 3way merges)
is also supported.
Furthermore, Ediff is equipped with directory-level capabilities that
allow the user to conveniently launch browsing or merging sessions on
groups of files in two (or three) different directories.
......@@ -828,7 +829,10 @@ region in buffer A, etc.
@item /
@kindex /
Displays the ancestor file during merges.
@vindex ediff-show-ancestor
Toggle to display the ancestor file in 3way merges.
You can enable permanently this setting customizing the variable
@code{ediff-show-ancestor}.
@item &
@kindex &
In some situations, such as when one of the files agrees with the ancestor file
......
......@@ -366,6 +366,11 @@ words where first character is upper rather than title case, e.g.,
* Changes in Specialized Modes and Packages in Emacs 26.1
+++
*** The ancestor buffer is shown by default in 3way merges.
A new option ediff-show-ancestor and a new toggle
ediff-toggle-show-ancestor.
** TeX: Add luatex and xetex as alternatives to pdftex
** Electric-Buffer-menu
......
......@@ -112,7 +112,7 @@ n,SPC -next diff | h -highlighting | r -restore buf C's old diff
C-l -recenter | #f/#h -focus/hide regions | + -combine diff regions
v/V -scroll up/dn | X -read-only in buf X | wx -save buf X
</> -scroll lt/rt | m -wide display | wd -save diff output
~ -swap variants | s -shrink window C | / -show ancestor buff
~ -swap variants | s -shrink window C | / -show/hide ancestor buff
| $$ -show clashes only | & -merge w/new default
| $* -skip changed regions |
"
......
......@@ -1363,6 +1363,16 @@ This property can be toggled interactively."
;; if nil, this silences some messages
(defvar ediff-verbose-p t)
(defcustom ediff-show-ancestor t
"If non-nil, show ancestor buffer in 3way merges and refine it."
:type 'boolean
:group 'ediff-merge
:version "26.1")
;; Store orig value of `ediff-show-ancestor' when changed in
;; `ediff-toggle-show-ancestor' and restore it on exit.
(ediff-defvar-local ediff--show-ancestor-orig nil "")
(defcustom ediff-autostore-merges 'group-jobs-only
"Save the results of merge jobs automatically.
With value nil, don't save automatically. With value t, always
......
......@@ -178,7 +178,7 @@ to invocation.")
(define-key ediff-mode-map "r" nil)
(cond (ediff-merge-job
;; Will barf if no ancestor
(define-key ediff-mode-map "/" 'ediff-show-ancestor)
(define-key ediff-mode-map "/" 'ediff-toggle-show-ancestor)
;; In merging, we allow only A->C and B->C copying.
(define-key ediff-mode-map "a" 'ediff-copy-A-to-C)
(define-key ediff-mode-map "b" 'ediff-copy-B-to-C)
......@@ -553,11 +553,12 @@ to invocation.")
(ediff-refresh-mode-lines)
(setq ediff-control-window (selected-window))
(setq ediff-window-config-saved
(format "%S%S%S%S%S%S%S"
(format "%S%S%S%S%S%S%S%S"
ediff-control-window
ediff-window-A
ediff-window-B
ediff-window-C
ediff-window-Ancestor
ediff-split-window-function
(ediff-multiframe-setup-p)
ediff-wide-display-p))
......@@ -600,12 +601,6 @@ to these buffers are not saved at this point---the user can do this later,
if necessary."
(interactive)
(ediff-barf-if-not-control-buffer)
(if (and (ediff-buffer-live-p ediff-ancestor-buffer)
(not
(y-or-n-p
"Ancestor buffer will not be used. Recompute diffs anyway? ")))
(error "Recomputation of differences canceled"))
(let ((point-A (ediff-with-current-buffer ediff-buffer-A (point)))
;;(point-B (ediff-with-current-buffer ediff-buffer-B (point)))
(tmp-buffer (get-buffer-create ediff-tmp-buffer))
......@@ -614,14 +609,17 @@ if necessary."
;; (null ediff-buffer-C) is no problem, as we later check if
;; ediff-buffer-C is alive
(buf-C-file-name (buffer-file-name ediff-buffer-C))
(buf-ancestor-file-name (buffer-file-name ediff-ancestor-buffer))
(overl-A (ediff-get-value-according-to-buffer-type
'A ediff-narrow-bounds))
(overl-B (ediff-get-value-according-to-buffer-type
'B ediff-narrow-bounds))
(overl-C (ediff-get-value-according-to-buffer-type
'C ediff-narrow-bounds))
beg-A end-A beg-B end-B beg-C end-C
file-A file-B file-C)
(overl-Ancestor (ediff-get-value-according-to-buffer-type
'Ancestor ediff-narrow-bounds))
beg-A end-A beg-B end-B beg-C end-C beg-Ancestor end-Ancestor
file-A file-B file-C file-Ancestor)
(if (stringp buf-A-file-name)
(setq buf-A-file-name (file-name-nondirectory buf-A-file-name)))
......@@ -629,15 +627,19 @@ if necessary."
(setq buf-B-file-name (file-name-nondirectory buf-B-file-name)))
(if (stringp buf-C-file-name)
(setq buf-C-file-name (file-name-nondirectory buf-C-file-name)))
(if (stringp buf-ancestor-file-name)
(setq buf-ancestor-file-name (file-name-nondirectory buf-ancestor-file-name)))
(ediff-unselect-and-select-difference -1)
(setq beg-A (ediff-overlay-start overl-A)
beg-B (ediff-overlay-start overl-B)
beg-C (ediff-overlay-start overl-C)
beg-Ancestor (ediff-overlay-start overl-Ancestor)
end-A (ediff-overlay-end overl-A)
end-B (ediff-overlay-end overl-B)
end-C (ediff-overlay-end overl-C))
end-C (ediff-overlay-end overl-C)
end-Ancestor (ediff-overlay-end overl-Ancestor))
(if ediff-word-mode
(progn
......@@ -645,51 +647,37 @@ if necessary."
(setq file-A (ediff-make-temp-file tmp-buffer "regA"))
(ediff-wordify beg-B end-B ediff-buffer-B tmp-buffer)
(setq file-B (ediff-make-temp-file tmp-buffer "regB"))
(if ediff-3way-job
(progn
(ediff-wordify beg-C end-C ediff-buffer-C tmp-buffer)
(setq file-C (ediff-make-temp-file tmp-buffer "regC"))))
(when ediff-3way-job
(ediff-wordify beg-C end-C ediff-buffer-C tmp-buffer)
(setq file-C (ediff-make-temp-file tmp-buffer "regC")))
(when ediff-merge-with-ancestor-job
(ediff-wordify beg-Ancestor end-Ancestor ediff-ancestor-buffer tmp-buffer)
(setq file-Ancestor (ediff-make-temp-file tmp-buffer "regAncestor")))
)
;; not word-mode
(setq file-A (ediff-make-temp-file ediff-buffer-A buf-A-file-name))
(setq file-B (ediff-make-temp-file ediff-buffer-B buf-B-file-name))
(if ediff-3way-job
(setq file-C (ediff-make-temp-file ediff-buffer-C buf-C-file-name)))
(when ediff-merge-with-ancestor-job
(setq file-Ancestor
(ediff-make-temp-file
ediff-ancestor-buffer
buf-ancestor-file-name)))
)
(ediff-clear-diff-vector 'ediff-difference-vector-A 'fine-diffs-also)
(ediff-clear-diff-vector 'ediff-difference-vector-B 'fine-diffs-also)
(ediff-clear-diff-vector 'ediff-difference-vector-C 'fine-diffs-also)
(ediff-clear-diff-vector
'ediff-difference-vector-Ancestor 'fine-diffs-also)
;; let them garbage collect. we can't use the ancestor after recomputing
;; the diffs.
(setq ediff-difference-vector-Ancestor nil
ediff-ancestor-buffer nil
ediff-state-of-merge nil)
(setq ediff-killed-diffs-alist nil) ; invalidate saved killed diff regions
;; In case of merge job, fool it into thinking that it is just doing
;; comparison
(let ((ediff-setup-diff-regions-function ediff-setup-diff-regions-function)
(ediff-3way-comparison-job ediff-3way-comparison-job)
(ediff-merge-job ediff-merge-job)
(ediff-merge-with-ancestor-job ediff-merge-with-ancestor-job)
(ediff-job-name ediff-job-name))
(if ediff-merge-job
(setq ediff-setup-diff-regions-function 'ediff-setup-diff-regions3
ediff-3way-comparison-job t
ediff-merge-job nil
ediff-merge-with-ancestor-job nil
ediff-job-name 'ediff-files3))
(funcall ediff-setup-diff-regions-function file-A file-B file-C))
(funcall ediff-setup-diff-regions-function file-A file-B
(if ediff-merge-with-ancestor-job file-Ancestor file-C))
(setq ediff-number-of-differences (length ediff-difference-vector-A))
(delete-file file-A)
(delete-file file-B)
(if file-C
(delete-file file-C))
(and file-C (delete-file file-C))
(and file-Ancestor (delete-file file-Ancestor))
(if ediff-3way-job
(ediff-set-state-of-all-diffs-in-all-buffers ediff-control-buffer))
......@@ -737,14 +725,16 @@ if necessary."
;; optional NO-REHIGHLIGHT says to not rehighlight buffers
(defun ediff-recenter (&optional no-rehighlight)
"Bring the highlighted region of all buffers being compared into view.
Reestablish the default three-window display."
Reestablish the default window display."
(interactive)
(ediff-barf-if-not-control-buffer)
(let (buffer-read-only)
(if (and (ediff-buffer-live-p ediff-buffer-A)
(ediff-buffer-live-p ediff-buffer-B)
(or (not ediff-3way-job)
(ediff-buffer-live-p ediff-buffer-C)))
(ediff-buffer-live-p ediff-buffer-C))
(or (not ediff-merge-with-ancestor-job)
(ediff-buffer-live-p ediff-ancestor-buffer)))
(ediff-setup-windows
ediff-buffer-A ediff-buffer-B ediff-buffer-C ediff-control-buffer)
(or (eq this-command 'ediff-quit)
......@@ -963,18 +953,43 @@ On a dumb terminal, switches between ASCII highlighting and no highlighting."
(setq ediff-auto-refine 'nix))
))
(defun ediff-show-ancestor ()
"Show the ancestor buffer in a suitable window."
(interactive)
(ediff-recenter)
(defun ediff--check-ancestor-exists ()
(or (ediff-buffer-live-p ediff-ancestor-buffer)
(if ediff-merge-with-ancestor-job
(error "Lost connection to ancestor buffer...sorry")
(error "Not merging with ancestor")))
(let (wind)
(cond ((setq wind (ediff-get-visible-buffer-window ediff-ancestor-buffer))
(raise-frame (window-frame wind)))
(t (set-window-buffer ediff-window-C ediff-ancestor-buffer)))))
(error "Lost connection to ancestor buffer. This shouldn't happen. \
Please report this bug to bug-gnu-emacs@gnu.org")
(error "Not merging with ancestor"))))
;; Restore `ediff-show-ancestor' on exit.
(defun ediff--restore-options-on-exit ()
(message "Restoring ediff-show-ancestor to %S..." ediff--show-ancestor-orig)
(setq ediff-show-ancestor ediff--show-ancestor-orig
ediff--show-ancestor-orig nil)
(remove-hook 'ediff-quit-hook #'ediff--restore-options-on-exit))
(defun ediff-toggle-show-ancestor ()
"Toggle to show/hide the ancestor buffer."
(interactive)
(ediff--check-ancestor-exists)
;; Save original value if not yet, and add hook to restore it on exit.
(unless ediff--show-ancestor-orig
(setq ediff--show-ancestor-orig ediff-show-ancestor)
(add-hook 'ediff-quit-hook #'ediff--restore-options-on-exit))
(setq ediff-show-ancestor (not ediff-show-ancestor))
;; If equal than orig, then nothing to restore on exit.
(when (eq ediff-show-ancestor ediff--show-ancestor-orig)
(setq ediff--show-ancestor-orig nil)
(remove-hook 'ediff-quit-hook #'ediff--restore-options-on-exit))
(if (not ediff-show-ancestor)
(progn
(delete-window ediff-window-Ancestor)
(ediff-recenter)
(message "Ancestor buffer is hidden"))
(let ((wind
(ediff-get-visible-buffer-window ediff-ancestor-buffer)))
(when wind (raise-frame (window-frame wind))))
(ediff-recenter)
(message "Showing ancestor buffer")))
(defun ediff-make-or-kill-fine-diffs (arg)
"Compute fine diffs. With negative prefix arg, kill fine diffs.
......@@ -1468,7 +1483,10 @@ Used in ediff-windows/regions only."
(ediff-recenter 'no-rehighlight))
(if (not (and (ediff-buffer-live-p ediff-buffer-A)
(ediff-buffer-live-p ediff-buffer-B)
(or (not ediff-3way-job) ediff-buffer-C)
(or (not ediff-3way-job) (ediff-buffer-live-p ediff-buffer-C))
(or (not ediff-merge-with-ancestor-job)
(not ediff-show-ancestor)
(ediff-buffer-live-p ediff-ancestor-buffer))
))
(error ediff-KILLED-VITAL-BUFFER))
......@@ -1476,11 +1494,15 @@ Used in ediff-windows/regions only."
(wind-A ediff-window-A)
(wind-B ediff-window-B)
(wind-C ediff-window-C)
(wind-Anc ediff-window-Ancestor)
(coefA (ediff-get-region-size-coefficient 'A operation))
(coefB (ediff-get-region-size-coefficient 'B operation))
(three-way ediff-3way-job)
(with-Ancestor (and ediff-merge-with-ancestor-job ediff-show-ancestor))
(coefC (if three-way
(ediff-get-region-size-coefficient 'C operation))))
(ediff-get-region-size-coefficient 'C operation)))
(coefAnc (if with-Ancestor
(ediff-get-region-size-coefficient 'Ancestor operation))))
(select-window wind-A)
(condition-case nil
......@@ -1496,6 +1518,11 @@ Used in ediff-windows/regions only."
(condition-case nil
(funcall operation (round (* coefC arg)))
(error))))
(when with-Ancestor
(select-window wind-Anc)
(condition-case nil
(funcall operation (round (* coefAnc arg)))
(error)))
(select-window wind)))
(defun ediff-scroll-vertically (&optional arg)
......@@ -1512,6 +1539,9 @@ the one half of the height of window-A."
(ediff-buffer-live-p ediff-buffer-B)
(or (not ediff-3way-job)
(ediff-buffer-live-p ediff-buffer-C))
(or (not ediff-merge-with-ancestor-job)
(not ediff-show-ancestor)
(ediff-buffer-live-p ediff-ancestor-buffer))
))
(error ediff-KILLED-VITAL-BUFFER))
......@@ -1531,6 +1561,10 @@ the one half of the height of window-A."
(window-height ediff-window-B)
(if ediff-3way-job
(window-height ediff-window-C)
500) ; some large number
(if (and ediff-merge-with-ancestor-job
ediff-show-ancestor)
(window-height ediff-window-Ancestor)
500)) ; some large number
2)
1 next-screen-context-lines))
......@@ -1556,6 +1590,9 @@ the width of the A/B/C windows."
(ediff-buffer-live-p ediff-buffer-B)
(or (not ediff-3way-job)
(ediff-buffer-live-p ediff-buffer-C))
(or (not ediff-merge-with-ancestor-job)
(not ediff-show-ancestor)
(ediff-buffer-live-p ediff-ancestor-buffer))
))
(error ediff-KILLED-VITAL-BUFFER))
......@@ -1587,7 +1624,10 @@ the width of the A/B/C windows."
(if ediff-3way-comparison-job
(window-width ediff-window-C)
500) ; some large number
)
(if (and ediff-merge-with-ancestor-job
ediff-show-ancestor)
(window-height ediff-window-Ancestor)
500)) ; some large number
2)
3)))
;; window found
......@@ -1689,6 +1729,11 @@ the width of the A/B/C windows."
(funcall func 'B n ctl-buf)
(if (ediff-buffer-live-p ediff-buffer-C)
(funcall func 'C n ctl-buf)
0)
(if (and ediff-merge-with-ancestor-job
ediff-show-ancestor
(ediff-buffer-live-p ediff-ancestor-buffer))
(funcall func 'Ancestor n ctl-buf)
0))))
;; this covers the horizontal coefficient as well:
;; if max-lines = 0 then coef = 1
......
......@@ -115,6 +115,8 @@ provided functions are written."
(ediff-defvar-local ediff-window-B nil "")
;; Official window for buffer C
(ediff-defvar-local ediff-window-C nil "")
;; Official window for buffer Ancestor
(ediff-defvar-local ediff-window-Ancestor nil "")
;; Ediff's window configuration.
;; Used to minimize the need to rearrange windows.
(ediff-defvar-local ediff-window-config-saved "" "")
......@@ -126,7 +128,8 @@ provided functions are written."
(B . ediff-window-B)
(?B . ediff-window-B)
(C . ediff-window-C)
(?C . ediff-window-C)))
(?C . ediff-window-C)
(Ancestor . ediff-window-Ancestor)))
(defcustom ediff-split-window-function 'split-window-vertically
......@@ -363,9 +366,13 @@ into icons, regardless of the window manager."
;; skip dedicated and unsplittable frames
(ediff-destroy-control-frame control-buffer)
(let ((window-min-height 1)
(with-Ancestor-p (ediff-with-current-buffer control-buffer
ediff-merge-with-ancestor-job))
split-window-function
merge-window-share merge-window-lines
wind-A wind-B wind-C)
(buf-Ancestor (ediff-with-current-buffer control-buffer
ediff-ancestor-buffer))
wind-A wind-B wind-C wind-Ancestor)
(ediff-with-current-buffer control-buffer
(setq merge-window-share ediff-merge-window-share
;; this lets us have local versions of ediff-split-window-function
......@@ -394,6 +401,14 @@ into icons, regardless of the window manager."
(setq wind-C (selected-window))
(switch-to-buffer buf-C)
(when (and ediff-show-ancestor with-Ancestor-p)
(select-window wind-C)
(funcall split-window-function)
(when (eq (selected-window) wind-C)
(other-window 1))
(switch-to-buffer buf-Ancestor)
(setq wind-Ancestor (selected-window)))
(select-window wind-A)
(funcall split-window-function)
......@@ -405,7 +420,8 @@ into icons, regardless of the window manager."
(ediff-with-current-buffer control-buffer
(setq ediff-window-A wind-A
ediff-window-B wind-B
ediff-window-C wind-C))
ediff-window-C wind-C
ediff-window-Ancestor wind-Ancestor))
(ediff-select-lowest-window)
(ediff-setup-control-buffer control-buffer)
......@@ -516,9 +532,13 @@ into icons, regardless of the window manager."
(wind-A (ediff-get-visible-buffer-window buf-A))
(wind-B (ediff-get-visible-buffer-window buf-B))
(wind-C (ediff-get-visible-buffer-window buf-C))
(buf-Ancestor (ediff-with-current-buffer control-buf
ediff-ancestor-buffer))
(wind-Ancestor (ediff-get-visible-buffer-window buf-Ancestor))
(frame-A (if wind-A (window-frame wind-A)))
(frame-B (if wind-B (window-frame wind-B)))
(frame-C (if wind-C (window-frame wind-C)))
(frame-Ancestor (if wind-Ancestor (window-frame wind-Ancestor)))
;; on wide display, do things in one frame
(force-one-frame
(ediff-with-current-buffer control-buf ediff-wide-display-p))
......@@ -549,7 +569,10 @@ into icons, regardless of the window manager."
(merge-window-share (ediff-with-current-buffer control-buf
ediff-merge-window-share))
merge-window-lines
designated-minibuffer-frame
designated-minibuffer-frame ; ediff-merge-with-ancestor-job
(with-Ancestor-p (ediff-with-current-buffer control-buf
ediff-merge-with-ancestor-job))
(done-Ancestor (not with-Ancestor-p))
done-A done-B done-C)
;; buf-A on its own
......@@ -585,6 +608,19 @@ into icons, regardless of the window manager."
(setq wind-C (selected-window))
(setq done-C t)))
;; buf-Ancestor on its own
(if (and ediff-show-ancestor
with-Ancestor-p
(window-live-p wind-Ancestor)
(ediff-window-ok-for-display wind-Ancestor)
(null use-same-frame)) ; buf Ancestor on its own
(progn
;; buffer buf-Ancestor is seen in live wind-Ancestor
(select-window wind-Ancestor)
(delete-other-windows)
(setq wind-Ancestor (selected-window))
(setq done-Ancestor t)))
(if (and use-same-frame-for-AB ; implies wind A and B are suitable
(window-live-p wind-A))
(progn
......@@ -606,6 +642,7 @@ into icons, regardless of the window manager."
(let ((window-min-height 1))
(if (and (eq frame-A frame-B)
(eq frame-B frame-C)
(eq frame-C frame-Ancestor)
(frame-live-p frame-A))
(select-frame frame-A)
;; avoid dedicated and non-splittable windows
......@@ -623,6 +660,14 @@ into icons, regardless of the window manager."
(setq wind-C (selected-window))
(switch-to-buffer buf-C)
(when (and ediff-show-ancestor with-Ancestor-p)
(select-window wind-C)
(funcall split-window-function)
(if (eq (selected-window) wind-C)
(other-window 1))
(switch-to-buffer buf-Ancestor)
(setq wind-Ancestor (selected-window)))
(select-window wind-A)
(funcall split-window-function)
......@@ -633,8 +678,8 @@ into icons, regardless of the window manager."
(setq done-A t
done-B t
done-C t)
))
done-C t
done-Ancestor t)))
(or done-A ; Buf A to be set in its own frame,
;;; or it was set before because use-same-frame = 1
......@@ -668,10 +713,22 @@ into icons, regardless of the window manager."
(setq wind-C (selected-window))
))
(or done-Ancestor ; Buf Ancestor to be set in its own frame,
(not ediff-show-ancestor)
;;; or it was set before because use-same-frame = 1
(progn
;; Buf-Ancestor was not set up yet as it wasn't visible
;; and use-same-frame = nil
(select-window orig-wind)
(delete-other-windows)
(switch-to-buffer buf-Ancestor)
(setq wind-Ancestor (selected-window))))
(ediff-with-current-buffer control-buf
(setq ediff-window-A wind-A
ediff-window-B wind-B
ediff-window-C wind-C)
ediff-window-C wind-C
ediff-window-Ancestor wind-Ancestor)
(setq frame-A (window-frame ediff-window-A)
designated-minibuffer-frame
(window-frame (minibuffer-window frame-A))))
......@@ -679,7 +736,6 @@ into icons, regardless of the window manager."
(ediff-setup-control-frame control-buf designated-minibuffer-frame)
))
;; Window setup for all comparison jobs, including 3way comparisons
(defun ediff-setup-windows-multiframe-compare (buf-A buf-B buf-C control-buf)
;;; Algorithm:
......@@ -1295,7 +1351,9 @@ It assumes that it is called from within the control buffer."
(let ((ctl-wind ediff-control-window)
(A-wind ediff-window-A)
(B-wind ediff-window-B)
(C-wind ediff-window-C))
(C-wind ediff-window-C)
(ancestor-job ediff-merge-with-ancestor-job)
(Ancestor-wind ediff-window-Ancestor))
(and
(ediff-window-visible-p A-wind)
......@@ -1303,13 +1361,19 @@ It assumes that it is called from within the control buffer."
;; if buffer C is defined then take it into account
(or (not ediff-3way-job)
(ediff-window-visible-p C-wind))
(or (not ancestor-job)
(not ediff-show-ancestor)
(ediff-window-visible-p Ancestor-wind))
(eq (window-buffer A-wind) ediff-buffer-A)
(eq (window-buffer B-wind) ediff-buffer-B)
(or (not ediff-3way-job)
(eq (window-buffer C-wind) ediff-buffer-C))
(or (not ancestor-job)
(not ediff-show-ancestor)
(eq (window-buffer Ancestor-wind) ediff-ancestor-buffer))
(string= ediff-window-config-saved
(format "%S%S%S%S%S%S%S"
ctl-wind A-wind B-wind C-wind
(format "%S%S%S%S%S%S%S%S"
ctl-wind A-wind B-wind C-wind Ancestor-wind
ediff-split-window-function
(ediff-multiframe-setup-p)
ediff-wide-display-p)))))))
......
Markdown is supported
0% or .
You are about to add 0 people to the discussion. Proceed with caution.
Finish editing this message first!
Please register or to comment