int repo_config_set_multivar_gently(struct repository *, const char *, const char *, const char *, unsigned);
int git_config_set_multivar_in_file_gently(const char *, const char *, const char *, const char *, const char *, unsigned);
-const char *git_config_prepare_comment_string(const char *);
+char *git_config_prepare_comment_string(const char *);
/**
* takes four parameters: