#3396 checksum: fix issues when removeTrailingSpaces is enabled

Signed-off-by: Patrizio Bekerle <[email protected]>

Author: pbek

CHANGELOG.md

@@ -1,5 +1,11 @@
 # QOwnNotes Changelog
 
+## 25.12.3
+
+- Fixed an issue where the diff dialog was incorrectly triggered when both
+  `enableNoteChecksumChecks` and `Editor/removeTrailingSpaces` settings were
+  enabled (for [#3396](https://github.com/pbek/QOwnNotes/issues/3396))
+
 ## 25.12.2
 
 - Try to fix PDF export not generating color output on some computers

src/entities/note.cpp

@@ -2302,6 +2302,12 @@ bool Note::stripTrailingSpaces(int skipLine) {
 
     if (wasStripped) {
         _noteText = noteTextLines.join(detectNewlineCharacters());
+
+        // Clear the checksum before storing to skip the external modification check
+        // since we're making an internal modification (stripping trailing spaces).
+        // The checksum will be recalculated and stored after writing to disk.
+        _fileChecksum.clear();
+
         store();
     }