diff -up httpd-2.4.12/modules/loggers/mod_log_config.c.orig httpd-2.4.12/modules/loggers/mod_log_config.c
--- httpd-2.4.12/modules/loggers/mod_log_config.c.orig	2014-08-22 20:18:08.000000000 +0200
+++ httpd-2.4.12/modules/loggers/mod_log_config.c	2015-03-15 00:16:52.448752117 +0100
@@ -368,14 +368,17 @@ static const char *log_request_file(requ
 {
     return ap_escape_logitem(r->pool, r->filename);
 }
+
 static const char *log_request_uri(request_rec *r, char *a)
 {
     return ap_escape_logitem(r->pool, r->uri);
 }
+
 static const char *log_request_method(request_rec *r, char *a)
 {
     return ap_escape_logitem(r->pool, r->method);
 }
+
 static const char *log_log_id(request_rec *r, char *a)
 {
     if (a && !strcmp(a, "c")) {
@@ -385,16 +388,19 @@ static const char *log_log_id(request_re
         return r->log_id ? r->log_id : "-";
     }
 }
+
 static const char *log_request_protocol(request_rec *r, char *a)
 {
     return ap_escape_logitem(r->pool, r->protocol);
 }
+
 static const char *log_request_query(request_rec *r, char *a)
 {
     return (r->args) ? apr_pstrcat(r->pool, "?",
                                    ap_escape_logitem(r->pool, r->args), NULL)
                      : "";
 }
+
 static const char *log_status(request_rec *r, char *a)
 {
     return pfmt(r->pool, r->status);
@@ -425,21 +431,10 @@ static const char *log_bytes_sent(reques
     }
 }
 
-
-static const char *log_header_in(request_rec *r, char *a)
-{
-    return ap_escape_logitem(r->pool, apr_table_get(r->headers_in, a));
-}
-
-static const char *log_trailer_in(request_rec *r, char *a)
-{
-    return ap_escape_logitem(r->pool, apr_table_get(r->trailers_in, a));
-}
-
-
 static APR_INLINE char *find_multiple_headers(apr_pool_t *pool,
                                               const apr_table_t *table,
-                                              const char *key)
+                                              const char *key,
+                                              int match_wildcard)
 {
     const apr_array_header_t *elts;
     const apr_table_entry_t *t_elt;
@@ -447,7 +442,9 @@ static APR_INLINE char *find_multiple_he
     apr_size_t len;
     struct sle {
         struct sle *next;
+        const char *key;
         const char *value;
+        apr_size_t keylen;
         apr_size_t len;
     } *result_list, *rp;
 
@@ -463,7 +460,8 @@ static APR_INLINE char *find_multiple_he
     result_list = rp = NULL;
 
     do {
-        if (!strcasecmp(t_elt->key, key)) {
+        if (!strcasecmp(t_elt->key, key) ||
+            (match_wildcard && !ap_strcasecmp_match(t_elt->key, key))) {
             if (!result_list) {
                 result_list = rp = apr_palloc(pool, sizeof(*rp));
             }
@@ -476,6 +474,12 @@ static APR_INLINE char *find_multiple_he
             rp->value = t_elt->val;
             rp->len = strlen(rp->value);
 
+            if (match_wildcard) {
+                rp->key = t_elt->key;
+                rp->keylen = strlen(rp->key);
+                len += rp->keylen + 2; /* "<key>: " */
+            }
+
             len += rp->len;
         }
         ++t_elt;
@@ -491,6 +495,12 @@ static APR_INLINE char *find_multiple_he
                 *cp++ = ',';
                 *cp++ = ' ';
             }
+            if (match_wildcard) {
+                memcpy(cp, rp->key, rp->keylen);
+                cp += rp->keylen;
+                *cp++ = ':';
+                *cp++ = ' ';
+            }
             memcpy(cp, rp->value, rp->len);
             cp += rp->len;
             rp = rp->next;
@@ -503,15 +513,36 @@ static APR_INLINE char *find_multiple_he
     return NULL;
 }
 
+static const char *log_header_in(request_rec *r, char *a)
+{
+    const char *cp = NULL;
+    int is_wildcard = ap_is_matchexp(a);
+
+    if (is_wildcard) {
+        cp = find_multiple_headers(r->pool, r->headers_in, a, is_wildcard);
+    }
+    else {
+        cp = apr_table_get(r->headers_in, a);
+    }
+
+    return ap_escape_logitem(r->pool, cp);
+}
+
+static const char *log_trailer_in(request_rec *r, char *a)
+{
+    return ap_escape_logitem(r->pool, apr_table_get(r->trailers_in, a));
+}
+
 static const char *log_header_out(request_rec *r, char *a)
 {
     const char *cp = NULL;
+    int is_wildcard = ap_is_matchexp(a);
 
     if (!strcasecmp(a, "Content-type") && r->content_type) {
         cp = ap_field_noparam(r->pool, r->content_type);
     }
-    else if (!strcasecmp(a, "Set-Cookie")) {
-        cp = find_multiple_headers(r->pool, r->headers_out, a);
+    else if (!strcasecmp(a, "Set-Cookie") || is_wildcard) {
+        cp = find_multiple_headers(r->pool, r->headers_out, a, is_wildcard);
     }
     else {
         cp = apr_table_get(r->headers_out, a);
@@ -529,6 +560,7 @@ static const char *log_note(request_rec 
 {
     return ap_escape_logitem(r->pool, apr_table_get(r->notes, a));
 }
+
 static const char *log_env_var(request_rec *r, char *a)
 {
     return ap_escape_logitem(r->pool, apr_table_get(r->subprocess_env, a));