* Module-level implementation of yasm_preproc_create().
* Call yasm_preproc_create() instead of calling this function.
*
- * \param in_filename initial starting filename, or NULL to read from
+ * \param in_filename initial starting filename, or "-" to read from
* stdin
* \param lm line mapping repository
* \param errwarns error/warnning set.
* The preprocessor needs access to the object format module to find out
* any output format specific macros.
* \param module preprocessor module
- * \param in_filename initial starting filename, or NULL to read from stdin
+ * \param in_filename initial starting filename, or "-" to read from stdin
* \param lm line mapping repository
* \param errwarns error/warning set
* \return New preprocessor.