Re: fringe arrow conflict between compile and gud?

[Richard Stallman]

This seems like a good change, but wouldn't it be cleaner to do the
add-to-list call be done where next-error-overlay-arrow is defined?


As for the next-error arrow, the patch below uses its own arrow
for next-error highlighting:

Index: lisp/progmodes/compile.el
===================================================================
RCS file: /cvsroot/emacs/emacs/lisp/progmodes/compile.el,v
retrieving revision 1.348
diff -u -r1.348 compile.el
--- lisp/progmodes/compile.el   29 Mar 2005 04:56:44 -0000      1.348
+++ lisp/progmodes/compile.el   31 Mar 2005 06:17:30 -0000
@@ -1233,6 +1233,8 @@
   (make-local-variable 'compilation-messages-start)
   (make-local-variable 'compilation-error-screen-columns)
   (make-local-variable 'overlay-arrow-position)
+  (setq next-error-overlay-arrow nil)
+  (add-to-list 'overlay-arrow-variable-list 'next-error-overlay-arrow)
   ;; Note that compilation-next-error-function is for interfacing
   ;; with the next-error function in simple.el, and it's only
   ;; coincidentally named similarly to compilation-next-error.
@@ -1641,8 +1643,9 @@
                         (numberp next-error-highlight)))
                (delete-overlay compilation-highlight-overlay))))))
     (when (and (eq next-error-highlight 'fringe-arrow))
-      (set (make-local-variable 'overlay-arrow-position)
-          (copy-marker (line-beginning-position))))))
+      (setq next-error-overlay-arrow
+           (copy-marker (line-beginning-position))))))
+
 
 (defun compilation-find-file (marker filename dir &rest formats)
   "Find a buffer for file FILENAME.

Index: lisp/simple.el
===================================================================
RCS file: /cvsroot/emacs/emacs/lisp/simple.el,v
retrieving revision 1.705
diff -u -r1.705 simple.el
--- lisp/simple.el      29 Mar 2005 23:17:30 -0000      1.705
+++ lisp/simple.el      31 Mar 2005 06:19:09 -0000
@@ -114,6 +114,8 @@
 
 (defvar next-error-highlight-timer nil)
 
+(defvar next-error-overlay-arrow nil)
+
 (defvar next-error-last-buffer nil
   "The most recent next-error buffer.
 A buffer becomes most recent when its compilation, grep, or