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Re: Overlay arrow in *compilation* and *grep* buffers
From: |
Juri Linkov |
Subject: |
Re: Overlay arrow in *compilation* and *grep* buffers |
Date: |
Fri, 13 May 2005 08:03:54 +0300 |
User-agent: |
Gnus/5.110002 (No Gnus v0.2) Emacs/22.0.50 (gnu/linux) |
> I don't like this change because its not the case that one user wants an arrow
> and another doesn't but rather one context may benefit from an arrow
> (graphical display) while another may not (text terminal).
>
> Previously I have suggested a change that gives compilation-context-lines a
> context dependent values so that the error scrolls to the top of the window on
> a text terminal. This or a similar change could be generalised to the case of
> no left-fringe which I think could be tested by:
>
> (if (or (not (display-graphic-p))
> (equal fringe-mode 0)
> (equal (car fringe-mode) 0))...
Even on text terminals users might prefer not to scroll the window.
Since overlay arrows are problematic on text terminals, there should
be an alternative method of highlighting. I propose to add one of the
methods of next-error highlighting for compilation messages, i.e. a
persistent overlay fontified in a special face.
The new option compilation-current-message-highlight will support
three values: `arrow', t for highlighting the whole current message
line, and nil to turn all indications off.
The default value can be selected based on the following conditions:
1. When left-fringe is available (tested with a condition like you proposed),
use an arrow.
2. Otherwise, if compilation-context-lines is nil, highlight the
current line in a special face with the persistent overlay.
3. If compilation-context-lines is not nil, don't highlight the current
message since the current message is indicated by its location
at the top of the window (by default).
There is a brief list of changes in the patch below:
1. New defcustom compilation-current-message-highlight.
2. compilation-context-lines moved up before compilation-context-lines.
3. compilation-highlight-overlay renamed to next-error-highlight-overlay,
because this overlay is actually used for highlighting source lines
visited by `next-error'.
4. compilation-highlight-overlay is used for highlighting lines
in the compilation buffer.
6. The value `fringe-arrow' renamed to more general name `arrow'.
Index: lisp/progmodes/compile.el
===================================================================
RCS file: /cvsroot/emacs/emacs/lisp/progmodes/compile.el,v
retrieving revision 1.353
diff -u -r1.353 compile.el
--- lisp/progmodes/compile.el 7 May 2005 16:18:36 -0000 1.353
+++ lisp/progmodes/compile.el 13 May 2005 04:59:43 -0000
@@ -383,12 +383,38 @@
"Additional things to highlight in Compilation mode.
This gets tacked on the end of the generated expressions.")
+(defcustom compilation-context-lines 0
+ "*Display this many lines of leading context before message.
+If nil, don't scroll the compilation output window."
+ :type '(choice integer (const :tag "No window scrolling" nil))
+ :group 'compilation
+ :version "22.1")
+
(defvar compilation-highlight-regexp t
"Regexp matching part of visited source lines to highlight temporarily.
Highlight entire line if t; don't highlight source lines if nil.")
(defvar compilation-highlight-overlay nil
- "Overlay used to temporarily highlight compilation matches.")
+ "Overlay used to highlight the current message in the compilation buffer.")
+
+(defcustom compilation-current-message-highlight
+ (if (and (or (not (display-graphic-p))
+ (equal fringe-mode 0)
+ (equal (car-safe fringe-mode) 0)))
+ (not compilation-context-lines)
+ 'arrow)
+ "*Highlighting of the current message in the compilation buffer.
+If t, highlight the current message with `compilation-current-message-face'.
+If nil, don't highlight the message in the compilation buffer.
+If `arrow', indicate the current message by the fringe or overlay arrow.
+
+The default is `arrow' when left fringe arrow is displayable. Otherwise,
+the default is t when compilation-context-lines is nil."
+ :type '(choice (const :tag "Highligh whole line" t)
+ (const :tag "No highlighting" nil)
+ (const :tag "Arrow" 'arrow))
+ :group 'compilation
+ :version "22.1")
(defcustom compilation-error-screen-columns t
"*If non-nil, column numbers in error messages are screen columns.
@@ -491,6 +517,10 @@
`compilation-info-face', `compilation-line-face' and
`compilation-column-face' get prepended to this, when applicable.")
+(defvar compilation-current-message-face 'region
+ "Face name to use for the current message selected by `next-error'.
+Used when `compilation-current-message-highlight' is t.")
+
(defvar compilation-error-face 'font-lock-warning-face
"Face name to use for file name in error messages.")
@@ -1248,7 +1278,7 @@
(make-local-variable 'compilation-error-screen-columns)
(make-local-variable 'overlay-arrow-position)
(set (make-local-variable 'overlay-arrow-string)
- (if (display-graphic-p) "=>" ""))
+ (if (eq compilation-current-message-highlight 'arrow) "=>" ""))
(setq next-error-overlay-arrow-position nil)
(add-hook 'kill-buffer-hook
(lambda () (setq next-error-overlay-arrow-position nil)) nil t)
@@ -1506,11 +1536,24 @@
(end-loc (nth 2 loc))
(marker (point-marker)))
(setq compilation-current-error (point-marker)
- overlay-arrow-position
- (if (bolp)
- compilation-current-error
- (copy-marker (line-beginning-position)))
loc (car loc))
+ (cond ((eq compilation-current-message-highlight 'arrow)
+ (setq overlay-arrow-position
+ (if (bolp)
+ compilation-current-error
+ (copy-marker (line-beginning-position)))))
+ ((eq compilation-current-message-highlight t)
+ (unless compilation-highlight-overlay
+ (setq compilation-highlight-overlay
+ (make-overlay (point-min) (point-min)))
+ (overlay-put compilation-highlight-overlay 'face 'match))
+ (move-overlay compilation-highlight-overlay
+ (copy-marker (line-beginning-position))
+ (copy-marker (line-end-position))
+ (current-buffer)))
+ ((not compilation-current-message-highlight)
+ (if compilation-highlight-overlay
+ (delete-overlay compilation-highlight-overlay))))
;; If loc contains no marker, no error in that file has been visited. If
;; the marker is invalid the buffer has been killed. So, recalculate all
;; markers for that file.
@@ -1575,13 +1618,6 @@
(setcdr loc (list line file marker)))
loc))
-(defcustom compilation-context-lines 0
- "*Display this many lines of leading context before message.
-If nil, don't scroll the compilation output window."
- :type '(choice integer (const :tag "No window scrolling" nil))
- :group 'compilation
- :version "22.1")
-
(defsubst compilation-set-window (w mk)
"Align the compilation output window W with marker MK near top."
(if (integerp compilation-context-lines)
@@ -1591,8 +1627,6 @@
(point))))
(set-window-point w mk))
-(defvar next-error-highlight-timer)
-
(defun compilation-goto-locus (msg mk end-mk)
"Jump to an error corresponding to MSG at MK.
All arguments are markers. If END-MK is non-nil, mark is set there
@@ -1636,10 +1670,10 @@
(when highlight-regexp
(if (timerp next-error-highlight-timer)
(cancel-timer next-error-highlight-timer))
- (unless compilation-highlight-overlay
- (setq compilation-highlight-overlay
+ (unless next-error-highlight-overlay
+ (setq next-error-highlight-overlay
(make-overlay (point-min) (point-min)))
- (overlay-put compilation-highlight-overlay 'face 'next-error))
+ (overlay-put next-error-highlight-overlay 'face 'next-error))
(with-current-buffer (marker-buffer mk)
(save-excursion
(if end-mk (goto-char end-mk) (end-of-line))
@@ -1649,19 +1683,19 @@
(re-search-forward highlight-regexp end t))
(progn
(goto-char (match-beginning 0))
- (move-overlay compilation-highlight-overlay
+ (move-overlay next-error-highlight-overlay
(match-beginning 0) (match-end 0)
(current-buffer)))
- (move-overlay compilation-highlight-overlay
+ (move-overlay next-error-highlight-overlay
(point) end (current-buffer)))
(if (numberp next-error-highlight)
(setq next-error-highlight-timer
(run-at-time next-error-highlight nil 'delete-overlay
- compilation-highlight-overlay)))
+ next-error-highlight-overlay)))
(if (not (or (eq next-error-highlight t)
(numberp next-error-highlight)))
- (delete-overlay compilation-highlight-overlay))))))
- (when (and (eq next-error-highlight 'fringe-arrow))
+ (delete-overlay next-error-highlight-overlay))))))
+ (when (and (eq next-error-highlight 'arrow))
(setq next-error-overlay-arrow-position
(copy-marker (line-beginning-position))))))
Index: lisp/simple.el
===================================================================
RCS file: /cvsroot/emacs/emacs/lisp/simple.el,v
retrieving revision 1.720
diff -u -r1.720 simple.el
--- lisp/simple.el 8 May 2005 19:33:14 -0000 1.720
+++ lisp/simple.el 13 May 2005 04:55:15 -0000
@@ -89,11 +89,11 @@
If number, highlight the locus in next-error face for given time in seconds.
If t, use persistent overlays fontified in next-error face.
If nil, don't highlight the locus in the source buffer.
-If `fringe-arrow', indicate the locus by the fringe arrow."
+If `arrow', indicate the locus by the fringe or overlay arrow."
:type '(choice (number :tag "Delay")
(const :tag "Persistent overlay" t)
(const :tag "No highlighting" nil)
- (const :tag "Fringe arrow" 'fringe-arrow))
+ (const :tag "Arrow" 'arrow))
:group 'next-error
:version "22.1")
@@ -102,14 +102,17 @@
If number, highlight the locus in next-error face for given time in seconds.
If t, use persistent overlays fontified in next-error face.
If nil, don't highlight the locus in the source buffer.
-If `fringe-arrow', indicate the locus by the fringe arrow."
+If `arrow', indicate the locus by the fringe or overlay arrow."
:type '(choice (number :tag "Delay")
(const :tag "Persistent overlay" t)
(const :tag "No highlighting" nil)
- (const :tag "Fringe arrow" 'fringe-arrow))
+ (const :tag "Arrow" 'arrow))
:group 'next-error
:version "22.1")
+(defvar next-error-highlight-overlay nil
+ "Overlay used to highlight next-error matches.")
+
(defvar next-error-highlight-timer nil)
(defvar next-error-overlay-arrow-position nil)
--
Juri Linkov
http://www.jurta.org/emacs/
- Re: Overlay arrow in *compilation* and *grep* buffers, (continued)
Re: Overlay arrow in *compilation* and *grep* buffers, Juri Linkov, 2005/05/09
- Re: Overlay arrow in *compilation* and *grep* buffers, David Kastrup, 2005/05/10
- Re: Overlay arrow in *compilation* and *grep* buffers, Nick Roberts, 2005/05/12
- Re: Overlay arrow in *compilation* and *grep* buffers, Richard Stallman, 2005/05/12
- Re: Overlay arrow in *compilation* and *grep* buffers,
Juri Linkov <=
- Re: Overlay arrow in *compilation* and *grep* buffers, Eli Zaretskii, 2005/05/13
- Re: Overlay arrow in *compilation* and *grep* buffers, Nick Roberts, 2005/05/13
- Re: Overlay arrow in *compilation* and *grep* buffers, Eli Zaretskii, 2005/05/13
- Re: Overlay arrow in *compilation* and *grep* buffers, Richard Stallman, 2005/05/13
- Re: Overlay arrow in *compilation* and *grep* buffers, Eli Zaretskii, 2005/05/14
- Re: Overlay arrow in *compilation* and *grep* buffers, Kim F. Storm, 2005/05/14
- Re: Overlay arrow in *compilation* and *grep* buffers, Richard Stallman, 2005/05/15
Re: Overlay arrow in *compilation* and *grep* buffers, Nick Roberts, 2005/05/13
Re: Overlay arrow in *compilation* and *grep* buffers, Richard Stallman, 2005/05/13
Re: Overlay arrow in *compilation* and *grep* buffers, Nick Roberts, 2005/05/14