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bug#23660: edebug doesn't support circular object read syntax


From: Michael Heerdegen
Subject: bug#23660: edebug doesn't support circular object read syntax
Date: Tue, 31 May 2016 16:53:25 +0200
User-agent: Gnus/5.13 (Gnus v5.13) Emacs/25.0.94 (gnu/linux)

Noam Postavsky <address@hidden> writes:

> Do C-u C-M-x on
>
>     '(#1=a . #1#)
>
> Result: Invalid read syntax "#"

Instrumenting a constant is surely not very useful.  But instrumenting a
definition that contains that read syntax fails too; e.g.

(defun f ()
  '(#1=a . #1#))

which is not so nice indeed (the above definition doesn't involve
anything circular btw).


Michael.





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