I've pushed another fix for this issue. See commit 35ee4a4

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I think that make the issue worse.

Very strange.
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The reason of this issue is:

When clamp startIdx and endIdx to [0, lines.Count - 1], the endPosition.Column and startPosition.Column may no longer refer to the row corresponding to endIdx/startIdx

I can not re-produce the issue shows in your picture.

Run from the code is fine, but the artifacts in CI seems not right.

Try to use Copy context menu instead of hotkey Ctrl+C which sometimes did not work as expacted.

Try to use Copy context menu instead of hotkey Ctrl+C which sometimes did not work as expacted.

With the CI artifacts, the copy in context menu also not right, that's weird. I'm using Deepin 23 with linux-x64

I'll download it and try

Strange. The package.win-x64.zip works as expacted on my PC.

Please make sure you have downloaded the correct version:
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I am sure that I downloaded linux-x64 from https://github.com/sourcegit-scm/sourcegit/actions/runs/13625760977, and run dotnet publish locally will also produce the effect shown in the picture.

Can you debug this project now?

After I reinstalled the deb/copied the locally packaged files several times, it finally worked, and I had no idea what the problem was.

Currently, copy would append an extra empty line if more than one line is selected.

Currently, copy would append an extra empty line if more than one line is selected.

It's because that for multiple lines selection, we use StringBuilder.AppendLine which will always add a line-ending character for each line.

I made #1049 to fix this.