Bug report

Not really a bug in terms of misbehaving code. I was just trying to understand lib/matplotlib/dates.py and and found a link in a comment that lead nowhere.

268ca34#diff-e6ad13bbdbf1912ae565e5ed7f274144R515

https://bugs.python.org/issue177742

The code just says

if dt.year >= 1900:
    # Note: in python 3.3 this is okay for years >= 1000,
    # refer to http://bugs.python.org/issue177742
    return cbook.unicode_safe(dt.strftime(fmt))

Expected outcome

The link leads to an existing bug which can then be read.

Matplotlib version

Cloned the current master, e.g. 86514a2, but also in matplotlib 2.0.0