Bug 497863

SUMMARY

When pasting to multiple cursors Kate should check if number of lines in the clipboard is the same as number of multiple cursors and split those lines to corresponding cursor, i.e. each cursor should get single line from the clipboard.

With current implementation in Kate every cursor gets all the lines from the clipboard.

This is example of similar implementation in Visual Studio Code:
https://github.com/microsoft/vscode/blob/4fa5611d67dc84e105e9cd155a746f2d7813d9a0/src/vs/editor/common/cursor/cursorTypeEditOperations.ts#L676

STEPS TO REPRODUCE

If we have text like this:

```
a
b
c

1
2
3
```

In Sublime Text and Visual Studio Code it is possible to cut three lines with numbers to the clipboard, select lines with letters, do split to multiple lines, use Home to put cursor at line start, make paste and get this:

EXPECTED RESULT

```
1a
2b
3c
```

OBSERVED RESULT

In Kate 24.08.3 we get this:

```
1
2
3a
1
2
3b
1
2
3c
```

ADDITIONAL INFORMATION

Original report: https://bugs.kde.org/show_bug.cgi?id=497152
Related discussion: https://discuss.kde.org/t/multiline-paste-with-the-same-number-of-lines/26128/4