do not reject invalid module names when embedding - the result may still be executable

Cython/Compiler/Main.py

@@ -116,7 +116,7 @@ class Context(object):
         return Errors.report_error(exc)
 
     def find_module(self, module_name,
-            relative_to = None, pos = None, need_pxd = 1):
+            relative_to = None, pos = None, need_pxd = 1, check_module_name = True):
         # Finds and returns the module scope corresponding to
         # the given relative or absolute module name. If this
         # is the first time the module has been requested, finds
@@ -131,7 +131,7 @@ class Context(object):
 
         scope = None
         pxd_pathname = None
-        if not module_name_pattern.match(module_name):
+        if check_module_name and not module_name_pattern.match(module_name):
             if pos is None:
                 pos = (module_name, 0, 0)
             raise CompileError(pos,

Cython/Compiler/Pipeline.py

@@ -26,7 +26,8 @@ def parse_stage_factory(context):
         full_module_name = compsrc.full_module_name
         initial_pos = (source_desc, 1, 0)
         saved_cimport_from_pyx, Options.cimport_from_pyx = Options.cimport_from_pyx, False
-        scope = context.find_module(full_module_name, pos = initial_pos, need_pxd = 0)
+        scope = context.find_module(full_module_name, pos = initial_pos, need_pxd = 0,
+                                    check_module_name = not Options.embed)
         Options.cimport_from_pyx = saved_cimport_from_pyx
         tree = context.parse(source_desc, scope, pxd = 0, full_module_name = full_module_name)
         tree.compilation_source = compsrc