extsep description:
- avoid "e.g." in text
- record version information
(should be backported)
diff --git a/Doc/lib/libos.tex b/Doc/lib/libos.tex
index d963056..8f13e0e 100644
--- a/Doc/lib/libos.tex
+++ b/Doc/lib/libos.tex
@@ -1644,8 +1644,9 @@
\end{datadesc}
\begin{datadesc}{extsep}
-The character which separates the base filename from the extension,
-e.g. \character{.} in \code{os.py}.
+The character which separates the base filename from the extension;
+for example, the \character{.} in \file{os.py}.
+\versionadded{2.2}
\end{datadesc}
\begin{datadesc}{pathsep}