normalized_val = _expand_path (notmuch, absolute_key, val);
_notmuch_string_map_set (notmuch->config, absolute_key, normalized_val);
g_free (val);
normalized_val = _expand_path (notmuch, absolute_key, val);
_notmuch_string_map_set (notmuch->config, absolute_key, normalized_val);
g_free (val);