From: Prem <gowthamattada595@gmail.com>
Date: Sat, 3 Jan 2026 08:35:02 +0000 (+0530)
Subject: fixed issue-5799
X-Git-Tag: 3.14.3~12^2~4
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=e77fcc49f930bb23442f3fbb292ccc798734a31e;p=thirdparty%2Frspamd.git

fixed issue-5799
---

diff --git a/src/libmime/lang_detection.c b/src/libmime/lang_detection.c
index b783b8325d..167b44f565 100644
--- a/src/libmime/lang_detection.c
+++ b/src/libmime/lang_detection.c
@@ -694,6 +694,13 @@ rspamd_language_detector_read_file(struct rspamd_config *cfg,
 	khiter_t k = kh_put(rspamd_languages_hash, d->languages, nelt->name, &ret);
 	g_assert(ret > 0); /* must be unique */
 	kh_value(d->languages, k) = nelt;
+
+	/* Mark Thai as having diacritics to prevent R_MIXED_CHARSET false positives */
+	if (strcmp(nelt->name, "th") == 0) {
+		nelt->flags |= RS_LANGUAGE_DIACRITICS;
+		msg_debug_lang_det_cfg("marked Thai language as having diacritics");
+	}
+
 	ucl_object_unref(top);
 }