main_charset      383 http/modules/ngx_http_charset_filter_module.c     ngx_str_t               *main_charset;
main_charset      393 http/modules/ngx_http_charset_filter_module.c     main_charset = &r->main->headers_out.charset;
main_charset      395 http/modules/ngx_http_charset_filter_module.c     if (main_charset->len == 0) {
main_charset      406 http/modules/ngx_http_charset_filter_module.c     charset = ngx_http_get_charset(r, main_charset);
main_charset      409 http/modules/ngx_http_charset_filter_module.c     ctx->charset_name = *main_charset;
main_charset      410 http/modules/ngx_http_charset_filter_module.c     *src = *main_charset;