Under r934, if I open a python script, press C-c C-c to run it (to get around another bug), then type some characters and press ESC-TAB in the script buffer to try to complete the text, Emacs hangs (though it can eventually be rescued with C-g).
If I set debug-on-quit to t, here's what I see when I press C-g:
Debugger entered--Lisp error: (quit)
accept-process-output(#<process /Library/Frameworks/EPD64.framework/Versions/7.2/bin/ipython> 1)
(while (not comint-redirect-completed) (accept-process-output proc 1))
(save-current-buffer (set-buffer procbuf) (interrupt-process proc comint-ptyp) (while (not comint-redirect-completed) (accept-process-output proc 1)))
(with-current-buffer procbuf (interrupt-process proc comint-ptyp) (while (not comint-redirect-completed) (accept-process-output proc 1)))
(condition-case nil (progn (if lines (with-current-buffer procbuf (py-shell-redirect-send-command-to-process "" outbuf proc nil t) (while (not comint-redirect-completed) (accept-process-output proc 1)))) (with-current-buffer outbuf (delete-region (point-min) (point-max))) (with-current-buffer procbuf (py-shell-redirect-send-command-to-process cmd outbuf proc nil t) (while (not comint-redirect-completed) (accept-process-output proc 1))) (with-current-buffer outbuf (buffer-substring (point-min) (point-max)))) (quit (with-current-buffer procbuf (interrupt-process proc comint-ptyp) (while (not comint-redirect-completed) (accept-process-output proc 1))) (signal (quote quit) nil)))
(unwind-protect (condition-case nil (progn (if lines (with-current-buffer procbuf (py-shell-redirect-send-command-to-process "" outbuf proc nil t) (while (not comint-redirect-completed) (accept-process-output proc 1)))) (with-current-buffer outbuf (delete-region (point-min) (point-max))) (with-current-buffer procbuf (py-shell-redirect-send-command-to-process cmd outbuf proc nil t) (while (not comint-redirect-completed) (accept-process-output proc 1))) (with-current-buffer outbuf (buffer-substring (point-min) (point-max)))) (quit (with-current-buffer procbuf (interrupt-process proc comint-ptyp) (while (not comint-redirect-completed) (accept-process-output proc 1))) (signal (quote quit) nil))) (if (with-current-buffer procbuf comint-redirect-completed) (while lines (with-current-buffer procbuf (py-shell-redirect-send-command-to-process (car lines) outbuf proc nil t)) (accept-process-output proc 1) (setq lines (cdr lines)))))
(if (and proc (not py-file-queue)) (unwind-protect (condition-case nil (progn (if lines (with-current-buffer procbuf (py-shell-redirect-send-command-to-process "" outbuf proc nil t) (while (not comint-redirect-completed) (accept-process-output proc 1)))) (with-current-buffer outbuf (delete-region (point-min) (point-max))) (with-current-buffer procbuf (py-shell-redirect-send-command-to-process cmd outbuf proc nil t) (while (not comint-redirect-completed) (accept-process-output proc 1))) (with-current-buffer outbuf (buffer-substring (point-min) (point-max)))) (quit (with-current-buffer procbuf (interrupt-process proc comint-ptyp) (while (not comint-redirect-completed) (accept-process-output proc 1))) (signal (quote quit) nil))) (if (with-current-buffer procbuf comint-redirect-completed) (while lines (with-current-buffer procbuf (py-shell-redirect-send-command-to-process (car lines) outbuf proc nil t)) (accept-process-output proc 1) (setq lines (cdr lines))))))
(let* ((proc (or (get-process py-shell-name) (prog1 (py-shell nil nil py-shell-name) (sit-for 0.1)))) (cmd (format "exec '''%s''' in {}" (mapconcat (quote identity) (split-string string "\n") "\\n"))) (procbuf (process-buffer proc)) (outbuf (get-buffer-create " *pyshellcomplete-output*")) (lines (reverse py-shell-input-lines))) (if (and proc (not py-file-queue)) (unwind-protect (condition-case nil (progn (if lines (with-current-buffer procbuf (py-shell-redirect-send-command-to-process "" outbuf proc nil t) (while ... ...))) (with-current-buffer outbuf (delete-region (point-min) (point-max))) (with-current-buffer procbuf (py-shell-redirect-send-command-to-process cmd outbuf proc nil t) (while (not comint-redirect-completed) (accept-process-output proc 1))) (with-current-buffer outbuf (buffer-substring (point-min) (point-max)))) (quit (with-current-buffer procbuf (interrupt-process proc comint-ptyp) (while (not comint-redirect-completed) (accept-process-output proc 1))) (signal (quote quit) nil))) (if (with-current-buffer procbuf comint-redirect-completed) (while lines (with-current-buffer procbuf (py-shell-redirect-send-command-to-process (car lines) outbuf proc nil t)) (accept-process-output proc 1) (setq lines (cdr lines)))))))
py-shell-execute-string-now(#("\ndef print_completions(namespace, text, prefix=''):\n for name in namespace:\n if name.startswith(text):\n print prefix + name\n\ndef complete(text):\n import __builtin__\n import __main__\n if '.' in text:\n terms = text.split('.')\n try:\n if hasattr(__main__, terms[0]):\n obj = getattr(__main__, terms[0])\n else:\n obj = getattr(__builtin__, terms[0])\n for term in terms[1:-1]:\n obj = getattr(obj, term)\n print_completions(dir(obj), terms[-1], text[:text.rfind('.') + 1])\n except AttributeError:\n pass\n else:\n import keyword\n print_completions(keyword.kwlist, text)\n print_completions(dir(__builtin__), text)\n print_completions(dir(__main__), text)\ncomplete('ex')\n" 829 831 (fontified t)))
(setq result (py-shell-execute-string-now (format "\ndef print_completions(namespace, text, prefix=''):\n for name in namespace:\n if name.startswith(text):\n print prefix + name\n\ndef complete(text):\n import __builtin__\n import __main__\n if '.' in text:\n terms = text.split('.')\n try:\n if hasattr(__main__, terms[0]):\n obj = getattr(__main__, terms[0])\n else:\n obj = getattr(__builtin__, terms[0])\n for term in terms[1:-1]:\n obj = getattr(obj, term)\n print_completions(dir(obj), terms[-1], text[:text.rfind('.') + 1])\n except AttributeError:\n pass\n else:\n import keyword\n print_completions(keyword.kwlist, text)\n print_completions(dir(__builtin__), text)\n print_completions(dir(__main__), text)\ncomplete('%s')\n" word)))
(if (string= word "") (tab-to-tab-stop) (setq result (py-shell-execute-string-now (format "\ndef print_completions(namespace, text, prefix=''):\n for name in namespace:\n if name.startswith(text):\n print prefix + name\n\ndef complete(text):\n import __builtin__\n import __main__\n if '.' in text:\n terms = text.split('.')\n try:\n if hasattr(__main__, terms[0]):\n obj = getattr(__main__, terms[0])\n else:\n obj = getattr(__builtin__, terms[0])\n for term in terms[1:-1]:\n obj = getattr(obj, term)\n print_completions(dir(obj), terms[-1], text[:text.rfind('.') + 1])\n except AttributeError:\n pass\n else:\n import keyword\n print_completions(keyword.kwlist, text)\n print_completions(dir(__builtin__), text)\n print_completions(dir(__main__), text)\ncomplete('%s')\n" word))) (if (eq result nil) (message "Could not do completion as the Python process is busy") (let ((comint-completion-addsuffix nil) (completions (if (split-string "\n" "\n") (split-string result "\n" t) (split-string result "\n")))) (py-shell-dynamic-simple-complete word completions))))
(let ((word (py-dot-word-before-point)) result) (if (string= word "") (tab-to-tab-stop) (setq result (py-shell-execute-string-now (format "\ndef print_completions(namespace, text, prefix=''):\n for name in namespace:\n if name.startswith(text):\n print prefix + name\n\ndef complete(text):\n import __builtin__\n import __main__\n if '.' in text:\n terms = text.split('.')\n try:\n if hasattr(__main__, terms[0]):\n obj = getattr(__main__, terms[0])\n else:\n obj = getattr(__builtin__, terms[0])\n for term in terms[1:-1]:\n obj = getattr(obj, term)\n print_completions(dir(obj), terms[-1], text[:text.rfind('.') + 1])\n except AttributeError:\n pass\n else:\n import keyword\n print_completions(keyword.kwlist, text)\n print_completions(dir(__builtin__), text)\n print_completions(dir(__main__), text)\ncomplete('%s')\n" word))) (if (eq result nil) (message "Could not do completion as the Python process is busy") (let ((comint-completion-addsuffix nil) (completions (if (split-string "\n" "\n") (split-string result "\n" t) (split-string result "\n")))) (py-shell-dynamic-simple-complete word completions)))))
py-shell-complete()
completion--capf-wrapper(py-shell-complete all)
run-hook-wrapped(completion--capf-wrapper py-shell-complete all)
completion-at-point()
call-interactively(completion-at-point nil nil)
can't reproduce
BTW that kind of error happens, if a function containing
accept-
runs under edebug.
Seems edebug gets confused than.