Merge fixes for #9860, #11104/#8688 and #12331 from 3.2

1 files changed, 29 insertions, 19 deletions

diff --git a/Lib/distutils/command/sdist.py b/Lib/distutils/command/sdist.py
index 48cb26b6ae..21ea61d96a 100644
--- a/Lib/distutils/command/sdist.py
+++ b/Lib/distutils/command/sdist.py
@@ -174,14 +174,20 @@ class sdist(Command):
         reading the manifest, or just using the default file set -- it all
         depends on the user's options.
         """
-        # new behavior:
+        # new behavior when using a template:
         # the file list is recalculated everytime because
         # even if MANIFEST.in or setup.py are not changed
         # the user might have added some files in the tree that
         # need to be included.
         #
-        #  This makes --force the default and only behavior.
+        #  This makes --force the default and only behavior with templates.
         template_exists = os.path.isfile(self.template)
+        if not template_exists and self._manifest_is_not_generated():
+            self.read_manifest()
+            self.filelist.sort()
+            self.filelist.remove_duplicates()
+            return
+
         if not template_exists:
             self.warn(("manifest template '%s' does not exist " +
                         "(using default file list)") %
@@ -336,23 +342,28 @@ class sdist(Command):
         by 'add_defaults()' and 'read_template()') to the manifest file
         named by 'self.manifest'.
         """
-        if os.path.isfile(self.manifest):
-            fp = open(self.manifest)
-            try:
-                first_line = fp.readline()
-            finally:
-                fp.close()
-
-            if first_line != '# file GENERATED by distutils, do NOT edit\n':
-                log.info("not writing to manually maintained "
-                         "manifest file '%s'" % self.manifest)
-                return
+        if self._manifest_is_not_generated():
+            log.info("not writing to manually maintained "
+                     "manifest file '%s'" % self.manifest)
+            return
 
         content = self.filelist.files[:]
         content.insert(0, '# file GENERATED by distutils, do NOT edit')
         self.execute(file_util.write_file, (self.manifest, content),
                      "writing manifest file '%s'" % self.manifest)
 
+    def _manifest_is_not_generated(self):
+        # check for special comment used in 3.1.3 and higher
+        if not os.path.isfile(self.manifest):
+            return False
+
+        fp = open(self.manifest)
+        try:
+            first_line = fp.readline()
+        finally:
+            fp.close()
+        return first_line != '# file GENERATED by distutils, do NOT edit\n'
+
     def read_manifest(self):
         """Read the manifest file (named by 'self.manifest') and use it to
         fill in 'self.filelist', the list of files to include in the source
@@ -360,12 +371,11 @@ class sdist(Command):
         """
         log.info("reading manifest file '%s'", self.manifest)
         manifest = open(self.manifest)
-        while True:
-            line = manifest.readline()
-            if line == '':              # end of file
-                break
-            if line[-1] == '\n':
-                line = line[0:-1]
+        for line in manifest:
+            # ignore comments and blank lines
+            line = line.strip()
+            if line.startswith('#') or not line:
+                continue
             self.filelist.append(line)
         manifest.close()