Append space only if missing

Author: danielhollas

aiida_test_cache/mock_code/_hasher.py

@@ -34,8 +34,10 @@ def __call__(self, cwd: Path) -> str:
                 file_content_bytes = file_obj.read()
             if path.name == self.SUBMIT_FILE:
                 file_content_bytes = self._strip_submit_content(file_content_bytes)
-                # TODO: REVERT THIS!!!!
-                file_content_bytes += b" "
+                # TODO: This is a temporary ugly hack for backward compatibility wit aiida-core<2.3
+                # REVERT THIS after 0.0.1 release!
+                if file_content_bytes[-1] != b" ":
+                    file_content_bytes += b" "
                 self.log("##################")
                 self.log("Stripped submit.sh")
                 self.log(f"\n{file_content_bytes.decode('utf-8')}")