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-rw-r--r--inc/DifferenceEngine.php2
1 files changed, 2 insertions, 0 deletions
diff --git a/inc/DifferenceEngine.php b/inc/DifferenceEngine.php
index e0fbf8e03..783d6bea5 100644
--- a/inc/DifferenceEngine.php
+++ b/inc/DifferenceEngine.php
@@ -1004,6 +1004,8 @@ class InlineWordLevelDiff extends MappedDiff {
* "Unified" diff formatter.
*
* This class formats the diff in classic "unified diff" format.
+ *
+ * NOTE: output is plain text and unsafe for use in HTML without escaping.
*/
class UnifiedDiffFormatter extends DiffFormatter {