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From: Stefan Monnier <monnier@iro.umontreal.ca>
To: Glenn Morris <rgm@gnu.org>
Cc: 8014@debbugs.gnu.org
Subject: bug#8014: 24.0.50; compilation-mode does not track directories
Date: Fri, 11 Mar 2011 23:30:07 -0500	[thread overview]
Message-ID: <jwv39mtvu51.fsf-monnier+emacs@gnu.org> (raw)
In-Reply-To: <pf62sje5h9.fsf@fencepost.gnu.org> (Glenn Morris's message of "Wed, 16 Feb 2011 21:53:54 -0500")

>> Alas, clicking on the warnings does not work: I am asked which file I
>> want to visit. 

> This works in Emacs 23.
> It works in trunk if one redefines compilation--previous-directory as:

> (defun compilation--previous-directory (pos)
>   (previous-single-property-change pos 'compilation-directory))

> so I guess something is going wrong in that function, which is supposed
> to be a faster version of the above.

I've installed the patch below which seems to fix the problem on the
test case.


        Stefan


=== modified file 'lisp/ChangeLog'
--- lisp/ChangeLog	2011-03-12 02:59:24 +0000
+++ lisp/ChangeLog	2011-03-12 04:27:18 +0000
@@ -1,5 +1,10 @@
 2011-03-12  Stefan Monnier  <monnier@iro.umontreal.ca>
 
+	* progmodes/compile.el (compilation--previous-directory): Fix up
+	various nil/dead-marker mismatches.
+	(compilation-directory-properties, compilation-error-properties):
+	Don't call it at a position past the one we're about to change.
+
 	* emacs-lisp/bytecomp.el (byte-compile-make-obsolete-variable):
 	Disable obsolescence warnings in the file that declares it.
 

=== modified file 'lisp/progmodes/compile.el'
--- lisp/progmodes/compile.el	2011-02-19 21:23:51 +0000
+++ lisp/progmodes/compile.el	2011-03-12 04:26:31 +0000
@@ -860,13 +860,14 @@
                        (car compilation--previous-directory-cache)))
            (prev
             (previous-single-property-change
-             pos 'compilation-directory nil cache)))
+             pos 'compilation-directory nil cache))
+           (res
       (cond
        ((null cache)
         (setq compilation--previous-directory-cache
-              (cons (copy-marker pos) (copy-marker prev)))
+                    (cons (copy-marker pos) (if prev (copy-marker prev))))
         prev)
-       ((eq prev cache)
+             ((and prev (= prev cache))
         (if cache
             (set-marker (car compilation--previous-directory-cache) pos)
           (setq compilation--previous-directory-cache
@@ -875,12 +876,13 @@
        (t
         (if cache
             (progn
-              (set-marker (car compilation--previous-directory-cache) pos)
+                    (set-marker cache pos)
               (setcdr compilation--previous-directory-cache
                       (copy-marker prev)))
           (setq compilation--previous-directory-cache
-                (cons (copy-marker pos) (copy-marker prev))))
-        prev)))))
+                      (cons (copy-marker pos) (if prev (copy-marker prev)))))
+              prev))))
+      (if (markerp res) (marker-position res) res))))
 
 ;; Internal function for calculating the text properties of a directory
 ;; change message.  The compilation-directory property is important, because it
@@ -889,7 +891,7 @@
 (defun compilation-directory-properties (idx leave)
   (if leave (setq leave (match-end leave)))
   ;; find previous stack, and push onto it, or if `leave' pop it
-  (let ((dir (compilation--previous-directory (point))))
+  (let ((dir (compilation--previous-directory (match-beginning 0))))
     (setq dir (if dir (or (get-text-property (1- dir) 'compilation-directory)
 			  (get-text-property dir 'compilation-directory))))
     `(font-lock-face ,(if leave
@@ -948,7 +950,8 @@
                             (match-string-no-properties file))))
 	  (let ((dir
 	    (unless (file-name-absolute-p file)
-                   (let ((pos (compilation--previous-directory (point))))
+                   (let ((pos (compilation--previous-directory
+                               (match-beginning 0))))
                      (when pos
                        (or (get-text-property (1- pos) 'compilation-directory)
                            (get-text-property pos 'compilation-directory)))))))






  reply	other threads:[~2011-03-12  4:30 UTC|newest]

Thread overview: 4+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2011-02-10 17:11 bug#8014: 24.0.50; compilation-mode does not track directories Sam Steingold
2011-02-17  2:53 ` Glenn Morris
2011-03-12  4:30   ` Stefan Monnier [this message]
2011-03-14 13:39     ` Stefan Monnier

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