Preferences: FCBak date and format preference allows for illegal characters · FreeCAD/FreeCAD#25752

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File format: FCStdGood first issueMod: CoreTopic: PreferencesType: Feature

説明

Problem description

General -> Document -> Storage

In my case, %T inserts colons which is an illegal character in Windows file names, resulting in generic error:

File not saved: Cannot rename project file to backup file

without pointing the user to use a different format or specifically excluding some of the proposed documentation.

Development version About Info (in Safe Mode)

OS: Windows 11 build 26100
Architecture: x86_64
Version: 1.1.0rc1.20251125 (Git shallow)
Build date: 2025/11/25 17:53:08
Build type: Release
Branch: (HEAD detached at 5376760)
Hash: 53767601ea65de7cd9f6590e7d5856afc0841635
Python 3.11.14, Qt 6.8.3, Coin 4.0.3, Vtk 9.3.1, boost 1_86, Eigen3 3.4.0, PySide 6.8.3
shiboken 6.8.3, xerces-c 3.3.0, IfcOpenShell 0.8.2, OCC 7.8.1
Locale: English/United Kingdom (en_GB)
Navigation Style/Orbit Style/Rotation Mode: CAD/Free Turntable/Drag at cursor
Stylesheet/Theme/QtStyle: FreeCAD.qss/FreeCAD Dark/
Logical DPI/Physical DPI/Pixel Ratio: 96/101.253/1

コントリビューターガイド

技術スタック: cpppython
領域: desktop
Issue 種別: bug
難度: 2
推定時間: 1-3 hours
活動状況: fresh
明確さ: clear
前提条件: C++Windows file naming rules
初心者向け度: 70
調査方針: Locate the code handling the FCBak date format preference, likely in the Preferences module (src/App/Preferences.cpp or similar). Identify where the format string is used to generate backup filenames. Add validation to reject format strings containing colons or other illegal Windows filename characters. Use Qt's QRegularExpression to check for illegal characters. Provide an error message to the user. Test on Windows to ensure the fix resolves the file not saved error.