[Python-checkins] bpo-27470: Improve doc for commandline -3 option

[Mariatta]

https://github.com/python/cpython/commit/dd6e4aa113c6db4fcf9d252b5063ab217e8330a2
commit: dd6e4aa113c6db4fcf9d252b5063ab217e8330a2
branch: 2.7
author: Subhendu Ghosh <subho.prp at gmail.com>
committer: Mariatta <Mariatta at users.noreply.github.com>
date: 2017-08-04T12:00:10+10:00
summary:

bpo-27470: Improve doc for commandline -3 option

Mention that it warns about features that are significantly changed in Python 3
and can’t be detected using static code analysis.

Link to Porting Python 2 Code to Python 3 doc

files:
M Doc/using/cmdline.rst

diff --git a/Doc/using/cmdline.rst b/Doc/using/cmdline.rst
index b567818858f..f00f7f6026a 100644
--- a/Doc/using/cmdline.rst
+++ b/Doc/using/cmdline.rst
@@ -417,10 +417,12 @@ Miscellaneous options
 
    Warn about Python 3.x possible incompatibilities by emitting a
    :exc:`DeprecationWarning` for features that are removed or significantly
-   changed in Python 3.
+   changed in Python 3 and can't be detected using static code analysis.
 
    .. versionadded:: 2.6
 
+   See :doc:`/howto/pyporting` for more details.
+
 Options you shouldn't use
 ~~~~~~~~~~~~~~~~~~~~~~~~~