Fallback Diff segmenting move in large C file.

[bbbecker]

Describe the Bug I am using the VS Code extension to look at a C File. The move detection seems to be working, however it is segmented into almost every single line which pollutes the view. The files I am looking at are almost 4000 lines, and this seems to work correctly when I copy a small snippet of about 50 lines out

To Reproduce Steps to reproduce the behavior:

1. Start with (c) file that has 4000 lines
2. Move large chunks of the lines (500-1000) and save as new file
3. Open a diff for both files
4. See error

Expected Behavior Expect the moves to be in contiguous blocks

Actual Behavior each line is an individual move

Screenshots

Source Code Sorry, I can't share any more code.

SemanticDiff Version v0.9.0

VS Code Information Version: 1.95.3 (user setup) Commit: f1a4fb101478ce6ec82fe9627c43efbf9e98c813 Date: 2024-11-13T14:50:04.152Z Electron: 32.2.1 ElectronBuildId: 10427718 Chromium: 128.0.6613.186 Node.js: 20.18.0 V8: 12.8.374.38-electron.0 OS: Windows_NT x64 10.0.22631

Additional Context Add any other context about the problem here.

[bbbecker]

Actually, here are 2 files with some copilot-generated code that shows the same behavior. copilot_test.zip