Dennis Sweeney <sweeney.dennis...@gmail.com> added the comment:
I replicated this behavior. This looks like the relevant loop in pystrhex.c:
for (i=j=0; i < arglen; ++i) {
assert((j + 1) < resultlen);
unsigned char c;
c = (argbuf[i] >> 4) & 0x0f;
retbuf[j++] = Py_hexdigits[c];
c = argbuf[i] & 0x0f;
retbuf[j++] = Py_hexdigits[c];
if (bytes_per_sep_group && i < arglen - 1) {
Py_ssize_t anchor;
anchor = (bytes_per_sep_group > 0) ? (arglen - 1 - i) : (i + 1);
if (anchor % abs_bytes_per_sep == 0) {
retbuf[j++] = sep_char;
}
}
}
It looks like this can be refactored a bit for a tighter inner loop with fewer
if-tests. I can work on a PR.
----------
nosy: +Dennis Sweeney
versions: +Python 3.9 -Python 3.8
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