parsers: use 'k' format for Py_BuildValue instead of 'n' because Python 2.4...
parsers: use 'k' format for Py_BuildValue instead of 'n' because Python 2.4
'n' was introduced in Mercurial in
2b5940f64750 and broke Python 2.4 support in
mysterious ways that only showed failure in test-glog.t. Py_BuildValue failed
because of the unknown format and a TypeError was thrown ... but it never
showed up on the Python side and it happily continued processing with wrong
data.
Quoting
https://docs.python.org/2/c-api/arg.html :
n (integer) [Py_ssize_t]
Convert a Python integer or long integer to a C Py_ssize_t.
New in version 2.5.
k (integer) [unsigned long]
Convert a Python integer or long integer to a C unsigned long without
overflow checking.
This will use unsigned long instead of Py_ssize_t. That is not a good solution,
but good is not an option when we have to support Python 2.4.
