#15342: Add clarifying sentence to posixpath.join docstring.
This sentence appears as a clarifying note in the HTML docs, and seems
worth having in the docstring since it covers a very common use case
that isn't otherwise obvious. Thanks to Yongzhi Pan for the suggestion.
diff --git a/Lib/posixpath.py b/Lib/posixpath.py
index 7a4daa8b..2e3625b 100644
--- a/Lib/posixpath.py
+++ b/Lib/posixpath.py
@@ -71,7 +71,8 @@
def join(a, *p):
"""Join two or more pathname components, inserting '/' as needed.
If any component is an absolute path, all previous path components
- will be discarded."""
+ will be discarded. An empty last part will result in a path that
+ ends with a separator."""
sep = _get_sep(a)
path = a
try: