[svn r21388] fix problem with urls in requirement files, and some blank lines in requirement files

docs/news.txt

@@ -16,6 +16,9 @@ svn trunk
 * Download links that include embedded spaces or other unsafe
   characters (those characters get %-encoded).
 
+* Fixed use of URLs in requirement files, and problems with some blank
+  lines.
+
 * Turn some tar file errors into warnings.
 
 0.2

pip.py

@@ -425,7 +425,7 @@ class FreezeCommand(Command):
         if requirement:
             req_f = open(requirement)
             for line in req_f:
-                if not line or line.strip().startswith('#'):
+                if not line.strip() or line.strip().startswith('#'):
                     f.write(line)
                     continue
                 elif line.startswith('-e') or line.startswith('--editable'):
@@ -2522,7 +2522,7 @@ def parse_requirements(filename, finder, comes_from=None):
                 req = InstallRequirement.from_editable(
                     line, comes_from)
             else:
-                req = InstallRequirement(line, comes_from)
+                req = InstallRequirement.from_line(line, comes_from)
             yield req
 
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