Do not stem exceptions.

diff --git a/src/libmime/message.c b/src/libmime/message.c
index 786510822f92028dd4637718cbfa94593d1b0e2b..d34dd559867c5a68b8661daf44a07b8587277ddd 100644 (file)
--- a/src/libmime/message.c
+++ b/src/libmime/message.c
@@ -1208,23 +1208,25 @@ rspamd_normalize_text_part (struct rspamd_task *task,
                                r = sb_stemmer_stem (stem, w->begin, w->len);
                        }
 
-                       if (stem != NULL && r != NULL) {
-                               nlen = strlen (r);
-                               nlen = MIN (nlen, w->len);
-                               w->begin = rspamd_mempool_alloc (task->task_pool, nlen);
-                               memcpy (w->begin, r, nlen);
-                               w->len = nlen;
-                       }
-                       else {
-                               temp_word = w->begin;
-                               w->begin = rspamd_mempool_alloc (task->task_pool, w->len);
-                               memcpy (w->begin, temp_word, w->len);
-
-                               if (IS_PART_UTF (part)) {
-                                       rspamd_str_lc_utf8 (w->begin, w->len);
+                       if (w->len > 0 && !(w->len == 6 && memcmp (w->begin, "!!EX!!", 6) == 0)) {
+                               if (stem != NULL && r != NULL) {
+                                       nlen = strlen (r);
+                                       nlen = MIN (nlen, w->len);
+                                       w->begin = rspamd_mempool_alloc (task->task_pool, nlen);
+                                       memcpy (w->begin, r, nlen);
+                                       w->len = nlen;
                                }
                                else {
-                                       rspamd_str_lc (w->begin, w->len);
+                                       temp_word = w->begin;
+                                       w->begin = rspamd_mempool_alloc (task->task_pool, w->len);
+                                       memcpy (w->begin, temp_word, w->len);
+
+                                       if (IS_PART_UTF (part)) {
+                                               rspamd_str_lc_utf8 (w->begin, w->len);
+                                       }
+                                       else {
+                                               rspamd_str_lc (w->begin, w->len);
+                                       }
                                }
                        }
                }