# WinMerge 2.16.58 Release Notes

- About This Release
- What Is New in 2.16.58?
- What Is New in 2.16.57 Beta?
- Known issues

July 2026

## About This Release

This is a WinMerge 2.16.58 stable release. This release replaces earlier WinMerge stable releases as a recommended release.

Please submit bug reports to our bug-tracker.

## What Is New in 2.16.58?

### File compare

- BugFix: Crash (Access Violation) when file changes externally over a given threshold (#3456, PR #3457)

- BugFix: Parts of the panes become black text on a black background after copying changes in 3-way merge mode (#3468, #3469)

### Folder compare

- BugFix: Fix archive vs folder comparison selecting the wrong source (#3449, PR #3458)

- BugFix: Fix HICON resource leaks in image list initialization

### Select files or folders dialog

- BugFix: Handle exceptions raised while creating the common file dialog (#3462, PR #3464)

- BugFix: Fix MRU handling for three-way comparisons. (#3452)

### File Compare Report

- Add support for generating a single HTML report from multiple file comparisons (PR #3450)

### Patch Generation

- Add a file list with checkboxes to the Generate Patch dialog (PR #3470)

### Archive Generation

- Add support for creating comparison archives (PR #3483)

### Command line

- Add /g command line option for single-instance groups (PR #3472)

### Translations

- Translation updates:

  - Brazilian (PR #3459, PR #3476, PR #3489)
  - Chinese Simplified (PR #3460, PR #3479)
  - French (PR #3478, PR #3491)
  - German (PR #3480, PR #3486)
  - Italian (PR #3455, PR #3473, PR #3477, PR #3488)
  - Japanese
  - Korean (PR #3447, PR #3481, PR #3487)
  - Lithuanian (PR #3461, PR #3471, PR #3492)
  - Polish (PR #3463, PR #3490)
  - Turkish (PR #3465, PR #3474)
  - Russian (PR #3448, PR #3484)

## What Is New in 2.16.57 Beta?

### General

- BugFix: Fixed an issue where file mapping failures could incorrectly trigger a crash (#3412)

- Add module-relative offsets to crash log stack traces

### File compare

- BugFix: Avoid crash (issue #3402) by using GetFullLineLength() to avoid accessing line EOL directly

- BugFix: Fix incorrect caret position in status bar

- BugFix: Clear sync points before reloading compare files

- BugFix: Fix assertion failure on empty buffer access when all lines are deleted from a pane

- Add display line filter bar for file compare window (PR #3374)

- Improve syntax highlighting with Tree-sitter integration for better support of multiple languages (PR #3306, PR #3337, PR #3338, PR #3350, PR #3415, PR #3427, PR #3440)

- Refactor syntax parsing behind ISyntaxParser interface (PR #3415)

### Folder compare

- BugFix: Crash when trying to delete a "left-only" or "right-only" file during renaming (#3411)

- BugFix: ZIP export includes unchanged files in subfolders (#3444, PR#3445)

- Refactor filter evaluation parameters with new EvalContext for better code maintainability (PR #3353)

### Archive support

- BugFix: Fix error dialogs when comparing two Rar4 files (#3392)

- Update 7-Zip to 26.02

### Select Files or Folders dialog

- Add support for clipboard URL comparison and clipboard history menu (PR #3352)

### Plugins

- Add HandleSchemeClipboard plugin (PR #3352)

### Project files

- Warn user before opening project files containing plugin arguments for security reasons (PR #3397, #3396)

### Translations

- Translation updates:

  - Brazilian (PR #3431)
  - Chinese Simplified (PR #3429, PR #3438)
  - Chinese Traditional (PR #3426)
  - Corsican (PR #3420)
  - French (PR #3393, PR #3406, PR #3408, PR #3435)
  - German (PR #3432)
  - Italian (PR #3399, PR #3434, PR #3446)
  - Korean (PR #3422, PR #3433)
  - Lithuanian (PR #3405, PR #3439)
  - Polish (PR #3418, PR #3430)
  - Portuguese (PR #3391, PR #3414)
  - Russian (PR #3395, PR #3428)
  - Spanish (PR #3421, PR #3423, PR #3424, PR #3425)
  - Turkish (PR #3403, PR #3436)

## Known issues

- Pressing OK in the Options window while the INI file specified by /inifile is open for comparison in WinMerge may corrupt the file. (#2685)
- Suggestion to make the result of image comparison more reliable (#1391)
- Crashes when comparing large files (#325)
- Very slow to compare significantly different directories (#322)
- Vertical scrollbar breaks after pasting text (#296)