This particular problem is bugging me quite a bit. It makes inferior python mode useless to me. The behavior for me is this:
emacs -Q M-x run-python At this point, emacs hangs at 100% on one CPU. After C-g I am in a *Python* Inferior Python buffer. At this point if I type a python expression (4, for example), emacs hangs. I have to type C-g at least 3 times in order to get the return value. Note the type of messages I get when typing C-g in "Recent messages" below: In GNU Emacs 24.2.50.1 (i686-pc-linux-gnu, GTK+ Version 2.10.4) of 2012-10-23 on waterbuck.yellow.cert.org Bzr revision: 110636 e...@gnu.org-20121023170955-zl2nl98d2gatetjp Windowing system distributor `The X.Org Foundation', version 11.0.70101000 System Description: Red Hat Enterprise Linux Server release 5.8 (Tikanga) Configured using: `configure '--prefix=/home/mwd' '--without-toolkit-scroll-bars' '--with-gif=no' 'CFLAGS=-ggdb3 -O0'' Recent messages: For information about GNU Emacs and the GNU system, type C-h C-a. Sent python-shell-completion-setup-code Sent python-ffap-setup-code Sent python-eldoc-setup-code Error during redisplay: (jit-lock-function 1) signaled (quit) Error during redisplay: (jit-lock-function 216) signaled (quit) Error during redisplay: (jit-lock-function 248) signaled (quit) Error during redisplay: (jit-lock-function 402) signaled (quit) Error during redisplay: (jit-lock-function 410) signaled (quit) -- Michael Welsh Duggan (m...@cert.org)