cython-mode.el runs into a endless loop.

[yssource]

spacemacs freezes, when opening cython-mode files, such as .pyx, .pxd #12740
syl20bnr/spacemacs#12740

[lesteve]

More precisely (as noted in syl20bnr/spacemacs#12740), this is the function cython-current-defun that never finishes in some cases (I would guess non-Python syntax). For completeness this was a problem in my setup because I had which-function-mode enabled which means that opening a Cython file would hang once my cursor was on such a problematic line.

To reproduce:

# test-cython.pyx
cdef void test():
    cdef double my_var

Go to the second line of test-cython.pyx and M-: (cython-current-defun) will never finish.

[yssource]

Thanks.
I also turn off the which-function-mode for cython-mode as a workaround for myself.