From acd20ca332bb3f0ad48c7d92f832bfb2121decc1 Mon Sep 17 00:00:00 2001
From: "Jason R. Coombs" <jaraco@jaraco.com>
Date: Fri, 20 Mar 2015 15:34:18 -0400
Subject: Reindent warning and use short circuits for flatter implementation.

---
 pkg_resources/__init__.py | 42 +++++++++++++++++++++++-------------------
 1 file changed, 23 insertions(+), 19 deletions(-)

diff --git a/pkg_resources/__init__.py b/pkg_resources/__init__.py
index 1bb67a71..f7611472 100644
--- a/pkg_resources/__init__.py
+++ b/pkg_resources/__init__.py
@@ -36,6 +36,7 @@ import collections
 import plistlib
 import email.parser
 import tempfile
+import textwrap
 from pkgutil import get_importer
 
 PY3 = sys.version_info > (3,)
@@ -2505,26 +2506,29 @@ class Distribution(object):
         return self._parsed_version
 
     def _warn_legacy_version(self):
-            if isinstance(
-                    self._parsed_version, packaging.version.LegacyVersion):
-                # While an empty version is techincally a legacy version and
-                # is not a valid PEP 440 version, it's also unlikely to
-                # actually come from someone and instead it is more likely that
-                # it comes from setuptools attempting to parse a filename and
-                # including it in the list. So for that we'll gate this warning
-                # on if the version is anything at all or not.
-                if self.version:
-                    warnings.warn(
-                        "'%s (%s)' is being parsed as a legacy, non PEP 440, "
-                        "version. You may find odd behavior and sort order. "
-                        "In particular it will be sorted as less than 0.0. It "
-                        "is recommend to migrate to PEP 440 compatible "
-                        "versions." % (
-                            self.project_name, self.version,
-                        ),
-                        PEP440Warning,
-                    )
+        LV = packaging.version.LegacyVersion
+        is_legacy = isinstance(self._parsed_version, LV)
+        if not is_legacy:
+            return
+
+        # While an empty version is techincally a legacy version and
+        # is not a valid PEP 440 version, it's also unlikely to
+        # actually come from someone and instead it is more likely that
+        # it comes from setuptools attempting to parse a filename and
+        # including it in the list. So for that we'll gate this warning
+        # on if the version is anything at all or not.
+        if not self.version:
+            return
+
+        tmpl = textwrap.dedent("""
+            '%s (%s)' is being parsed as a legacy, non PEP 440,
+            version. You may find odd behavior and sort order.
+            In particular it will be sorted as less than 0.0. It
+            is recommend to migrate to PEP 440 compatible
+            versions.
+            """).strip().replace('\n', ' ')
 
+        warnings.warn(tmpl % (self.project_name, self.version), PEP440Warning)
 
     @property
     def version(self):
-- 
cgit v1.2.3