Fix for #6353 adding a newline between assembled files

library/files/assemble

@@ -102,11 +102,18 @@ def assemble_from_fragments(src_path, delimiter=None, compiled_regexp=None):
     tmpfd, temp_path = tempfile.mkstemp()
     tmp = os.fdopen(tmpfd,'w')
     delimit_me = False
+
     for f in sorted(os.listdir(src_path)):
         if compiled_regexp and not compiled_regexp.search(f):
             continue
         fragment = "%s/%s" % (src_path, f)
-        if delimit_me and delimiter:
+
+        # delimiters should only appear between fragments
+        if delimit_me:
+            # always put a newline between fragments
+            tmp.write('\n')
+
+            if delimiter:
                 # un-escape anything like newlines
                 delimiter = delimiter.decode('unicode-escape')
                 tmp.write(delimiter)
@@ -114,9 +121,11 @@ def assemble_from_fragments(src_path, delimiter=None, compiled_regexp=None):
                 # delimiter, so lines don't run together
                 if delimiter[-1] != '\n':
                     tmp.write('\n')
+
         if os.path.isfile(fragment):
             tmp.write(file(fragment).read())
         delimit_me = True
+
     tmp.close()
     return temp_path