Fixed #1923: make sure we don't strip meaningful whitespace in PKG-INFO Description field

Lib/distutils/tests/test_dist.py

@@ -6,6 +6,7 @@ import StringIO
 import sys
 import unittest
 import warnings
+import textwrap
 
 from distutils.dist import Distribution, fix_help_options
 from distutils.cmd import Command
@@ -381,6 +382,21 @@ class MetadataTestCase(support.TempdirManager, support.EnvironGuard,
                   if line.strip() != '']
         self.assertTrue(len(output) > 0)
 
+    def test_long_description(self):
+        long_desc = textwrap.dedent("""\
+        example::
+              We start here
+            and continue here
+          and end here.""")
+        attrs = {"name": "package",
+                 "version": "1.0",
+                 "long_description": long_desc}
+
+        dist = distutils.dist.Distribution(attrs)
+        meta = self.format_metadata(dist)
+        meta = meta.replace('\n' + 8 * ' ', '\n')
+        self.assertTrue(long_desc in meta)
+
 def test_suite():
     suite = unittest.TestSuite()
     suite.addTest(unittest.makeSuite(DistributionTestCase))

Lib/distutils/util.py

@@ -558,7 +558,7 @@ def rfc822_escape(header):
     """Return a version of the string escaped for inclusion in an
     RFC-822 header, by ensuring there are 8 spaces space after each newline.
     """
-    lines = [x.strip() for x in header.split('\n')]
+    lines = header.split('\n')
     sep = '\n' + 8 * ' '
     return sep.join(lines)
 

Misc/NEWS

@@ -507,6 +507,9 @@ Core and Builtins
 Library
 -------
 
+- Issue #1923: Fixed the removal of meaningful spaces when PKG-INFO is 
+  generated in Distutils. Patch by Stephen Emslie.
+
 - Issue #4120: Drop reference to CRT from manifest when building extensions with
   msvc9compiler.