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(smerge-remove-props): Make the args non-optional.

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(smerge-keep-n): Remove props.
(smerge-keep-base, smerge-keep-other, smerge-keep-mine)
(smerge-keep-current, smerge-kill-current): Don't remove props anymore
now that it's done in smerge-keep-n.
(smerge-refined-change): New face.
(smerge-refine-chopup-region, smerge-refine-highlight-change)
(smerge-refine): New funs.
(smerge-basic-map): Bind smerge-refine.
This commit is contained in:
Stefan Monnier 2005-08-25 20:13:38 +00:00
parent 537fd670e9
commit 41796d0900
2 changed files with 98 additions and 6 deletions
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12
lisp/ChangeLog
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@ -1,3 +1,15 @@
2005-08-25 Stefan Monnier <monnier@iro.umontreal.ca>
* smerge-mode.el (smerge-remove-props): Make the args non-optional.
(smerge-keep-n): Remove props.
(smerge-keep-base, smerge-keep-other, smerge-keep-mine)
(smerge-keep-current, smerge-kill-current): Don't remove props anymore
now that it's done in smerge-keep-n.
(smerge-refined-change): New face.
(smerge-refine-chopup-region, smerge-refine-highlight-change)
(smerge-refine): New funs.
(smerge-basic-map): Bind smerge-refine.
2005-08-25 Juri Linkov <juri@jurta.org>
* progmodes/grep.el (grep, grep-mode): Make buffer-local variables

92
lisp/smerge-mode.el
View file

@ -129,6 +129,10 @@ Used in `smerge-diff-base-mine' and related functions."
(put 'smerge-markers-face 'face-alias 'smerge-markers)
(defvar smerge-markers-face 'smerge-markers)
(defface smerge-refined-change
'((t :background "yellow"))
"Face used for char-based changes shown by `smerge-refine'.")
(easy-mmode-defmap smerge-basic-map
`(("n" . smerge-next)
("p" . smerge-prev)
@ -139,6 +143,7 @@ Used in `smerge-diff-base-mine' and related functions."
("m" . smerge-keep-mine)
("E" . smerge-ediff)
("C" . smerge-combine-with-next)
("R" . smerge-refine)
("\C-m" . smerge-keep-current)
("=" . ,(make-sparse-keymap "Diff"))
("=<" "base-mine" . smerge-diff-base-mine)
@ -277,6 +282,7 @@ Can be nil if the style is undecided, or else:
(smerge-auto-leave)))
(defun smerge-keep-n (n)
(smerge-remove-props (match-beginning 0) (match-end 0))
;; We used to use replace-match, but that did not preserve markers so well.
(delete-region (match-end n) (match-end 0))
(delete-region (match-beginning 0) (match-beginning n)))
@ -326,7 +332,8 @@ according to `smerge-match-conflict'.")
;; mouse-face highlight
keymap (keymap (down-mouse-3 . smerge-popup-context-menu))))
(defun smerge-remove-props (&optional beg end)
(defun smerge-remove-props (beg end)
(remove-overlays beg end 'smerge 'refine)
(remove-overlays beg end 'smerge 'conflict))
(defun smerge-popup-context-menu (event)
@ -397,7 +404,6 @@ some major modes. Uses `smerge-resolve-function' to do the actual work."
(interactive)
(smerge-match-conflict)
(smerge-ensure-match 2)
(smerge-remove-props)
(smerge-keep-n 2)
(smerge-auto-leave))
@ -406,7 +412,6 @@ some major modes. Uses `smerge-resolve-function' to do the actual work."
(interactive)
(smerge-match-conflict)
;;(smerge-ensure-match 3)
(smerge-remove-props)
(smerge-keep-n 3)
(smerge-auto-leave))
@ -415,7 +420,6 @@ some major modes. Uses `smerge-resolve-function' to do the actual work."
(interactive)
(smerge-match-conflict)
;;(smerge-ensure-match 1)
(smerge-remove-props)
(smerge-keep-n 1)
(smerge-auto-leave))
@ -433,7 +437,6 @@ some major modes. Uses `smerge-resolve-function' to do the actual work."
(smerge-match-conflict)
(let ((i (smerge-get-current)))
(if (<= i 0) (error "Not inside a version")
(smerge-remove-props)
(smerge-keep-n i)
(smerge-auto-leave))))
@ -443,7 +446,6 @@ some major modes. Uses `smerge-resolve-function' to do the actual work."
(smerge-match-conflict)
(let ((i (smerge-get-current)))
(if (<= i 0) (error "Not inside a version")
(smerge-remove-props)
(let ((left nil))
(dolist (n '(3 2 1))
(if (and (match-end n) (/= (match-end n) (match-end i)))
@ -600,6 +602,84 @@ Point is moved to the end of the conflict."
(error nil)))
found))
(defun smerge-refine-chopup-region (beg end file)
"Chopup the region into small elements, one per line."
;; ediff chops up into words, where the definition of a word is
;; customizable. Instead we here keep only one char per line.
;; The advantages are that there's nothing to configure, that we get very
;; fine results, and that it's trivial to map the line numbers in the
;; output of diff back into buffer positions. The disadvantage is that it
;; can take more time to compute the diff and that the result is sometimes
;; too fine. I'm not too concerned about the slowdown because conflicts
;; are usually significantly smaller than the whole file. As for the
;; problem of too-fine-refinement, I have found it to be unimportant
;; especially when you consider the cases where the fine-grain is just
;; what you want.
(let ((buf (current-buffer)))
(with-temp-buffer
(insert-buffer-substring buf beg end)
(goto-char (point-min))
(while (not (eobp))
(forward-char 1)
(unless (eq (char-before) ?\n) (insert ?\n)))
(let ((coding-system-for-write 'emacs-mule))
(write-region (point-min) (point-max) file nil 'nomessage)))))
(defun smerge-refine-highlight-change (buf beg match-num1 match-num2)
(let* ((startline (string-to-number (match-string match-num1)))
(ol (make-overlay
(+ beg startline -1)
(+ beg (if (match-end match-num2)
(string-to-number (match-string match-num2))
startline))
buf
'front-advance nil)))
(overlay-put ol 'smerge 'refine)
(overlay-put ol 'evaporate t)
(overlay-put ol 'face 'smerge-refined-change)))
(defun smerge-refine ()
"Highlight the parts of the conflict that are different."
(interactive)
;; FIXME: make it work with 3-way conflicts.
(smerge-match-conflict)
(remove-overlays (match-beginning 0) (match-end 0) 'smerge 'refine)
(smerge-ensure-match 1)
(smerge-ensure-match 3)
(let ((buf (current-buffer))
;; Read them before the match-data gets clobbered.
(beg1 (match-beginning 1)) (end1 (match-end 1))
(beg2 (match-beginning 3)) (end2 (match-end 3))
(file1 (make-temp-file "smerge1"))
(file2 (make-temp-file "smerge2")))
;; Chop up regions into smaller elements and save into files.
(smerge-refine-chopup-region beg1 end1 file1)
(smerge-refine-chopup-region beg2 end2 file2)
;; Call diff on those files.
(unwind-protect
(with-temp-buffer
(let ((coding-system-for-read 'emacs-mule))
(call-process diff-command nil t nil file1 file2))
;; Process diff's output.
(goto-char (point-min))
(while (not (eobp))
(if (not (looking-at "\\([0-9]+\\)\\(?:,\\([0-9]+\\)\\)?\\([acd]\\)\\([0-9]+\\)\\(?:,\\([0-9]+\\)\\)?$"))
(error "Unexpected patch hunk header: %s"
(buffer-substring (point) (line-end-position)))
(let ((op (char-after (match-beginning 3))))
(when (memq op '(?d ?c))
(smerge-refine-highlight-change buf beg1 1 2))
(when (memq op '(?a ?c))
(smerge-refine-highlight-change buf beg2 4 5)))
(forward-line 1) ;Skip hunk header.
(and (re-search-forward "^[0-9]" nil 'move) ;Skip hunk body.
(goto-char (match-beginning 0))))))
(delete-file file1)
(delete-file file2))))
(defun smerge-diff (n1 n2)
(smerge-match-conflict)
(smerge-ensure-match n1)