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Bug in emacs running gdb on Redhat 7.3


From: ceftin
Subject: Bug in emacs running gdb on Redhat 7.3
Date: 16 Apr 2003 21:43:55 -0700

Hi,

I found a bug with the out-of-the box distribution of emacs 21.2.1
with Redhat 7.3. While debugging programs using gdb in emacs, the
arrow which indicates the current line of execution disappeared. I
could not figure out why this happening, and I found a posting in some
obscure place (I don't remember where), that gave me the fix. The
problem is in a function in python-mode.el. I simply included the fix
in my .emacs file:

(defun py-pdbtrack-overlay-arrow (activation)
  "Activate or de arrow at beginning-of-line in current buffer."
  ;; This was derived/simplified from edebug-overlay-arrow
  (cond (activation
          (setq overlay-arrow-position (make-marker))
           (setq overlay-arrow-string "=>")
            (set-marker overlay-arrow-position (py-point 'bol)
(current-buffer))
             (setq py-pdbtrack-is-tracking-p t))
        (py-pdbtrack-is-tracking-p
          (setq overlay-arrow-position nil)
           (setq py-pdbtrack-is-tracking-p nil))
        ))

))


And that did the trick. I don't know why it was happening, and I don't
understand the fix. But, since I am tired of seeing postings without
answers or answers proper keywords making them hard to locate, I
thought I'd post this fix for others.

Hope this helps.

Later,

Mehul


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