nginx 1.1.1 *) Change: now cache loader processes either as many files as specified by "loader_files" parameter or works no more than time specified by "loader_threshold" parameter during each iteration. *) Change: now SIGWINCH signal works only in deamon mode. *) Feature: now shared zones and caches use POSIX semaphores on Solaris. Thanks to Den Ivanov. *) Feature: accept filters are now supported on NetBSD. *) Bugfix: nginx could not be build on Linux 3.0. *) Bugfix: nginx did not use gzipping in some cases; the bug had appeared in 1.1.0. *) Bugfix: request body might be incorrectly processed if client used pipelining. *) Bugfix: in the "request_body_in_single_buf" directive. *) Bugfix: in "proxy_set_body" and "proxy_pass_request_body" directives if SSL connection to backend was used. *) Bugfix: nginx hogged CPU if all servers in an upstream were marked as "down". *) Bugfix: a segmentation fault might occur during reconfiguration if ssl_session_cache was defined but not used in a previous configuration. *) Bugfix: a segmentation fault might occur in a worker process if many backup servers were used in an upstream. *) Bugfix: a segmentation fault might occur in a worker process if "fastcgi/scgi/uwsgi_param" directives were used with values starting with "HTTP_"; the bug had appeared in 0.8.40.

--- a/src/http/modules/ngx_http_log_module.c
+++ b/src/http/modules/ngx_http_log_module.c
@@ -1055,25 +1055,6 @@ ngx_http_log_compile_format(ngx_conf_t *
 
     for ( /* void */ ; s < args->nelts; s++) {
 
-        for (i = 0; i < value[s].len; i++) {
-            if (value[s].data[i] != '%') {
-                continue;
-            }
-
-            ch = value[s].data[i + 1];
-
-            if ((ch >= 'A' && ch <= 'Z')
-                 || (ch >= 'a' && ch <= 'z')
-                 || ch == '{')
-            {
-                ngx_conf_log_error(NGX_LOG_EMERG, cf, 0,
-                     "the parameters in the \"%%name\" form are not supported, "
-                     "use the \"$variable\" instead");
-
-                return NGX_CONF_ERROR;
-            }
-        }
-
         i = 0;
 
         while (i < value[s].len) {