_gl_parse_config_line
waserr = _gl_parse_config_line(gl, fp, glc_file_getc, filename, who,
waserr = _gl_parse_config_line(gl, &bptr, glc_buff_getc, "", who, &lineno);
static int _gl_parse_config_line(GetLine *gl, void *stream, GlcGetcFn *getc_fn,