Bug: Broken Paste logic

[CookedMelon]

Environment:

• VS Code Version:1.105.1
• Extension Version:0.30.5
• JDK Type & Version:java 21.0.4
• OS Type & Version: Windows, Linux

Step to Reproduce:

Create a file like test.java, the content is:

class test {
    private String function () {
        String a = "555\n555";
        a = "ggg";
        return a;
    }
}

Scenario A (Selection Paste): Use the mouse to select the \n characters (inside the double quotes), copy them, and attempt to paste them.

Scenario B (Line Copy/Paste): Place the cursor anywhere inside the double quotes (on the line String a = "\n";) without selecting any text. Use the VS Code shortcut Ctrl + C then Ctrl + V (intended to duplicate the entire line).

Expected Behavior:

Scenario A

Before Paste

After Paste

Scenario B

Before Paste

After Paste

Actual Behavior:

Scenario A

What fxxk???

Scenario B

If I place the cursor inside the double quotes

I press ctrl c & ctrl v

What fxxk????????????

[CookedMelon]

This issue only occurs after installing the Extension Pack for Java. Based on my testing, this extension is the direct culprit behind the nonsensical paste behavior.

[CookedMelon]

Further testing revealed that the issue stemmed from the vscode-java-pack reference to a Red Hat plugin. The new issue link is: redhat-developer/vscode-java#4305