Simple and clean. One suggestion

[joonhwan]

Though not get to begin work on my fork, it stucks to me that it'd be good if it is browsable(mouse drag selection, moving cursor all around the text to select/copy text). How about put another third state "browsing(or what ever)" as well as normal and lock state. This state is entered when user move away from the 'right' input position and exit when user inputs characters or does paste.
Your simple works inspire me! Thanks.

[pb82]

Thanks for your suggestions. The reason why mouse selection is disabled atm is that this would allow to select multiple lines and paste them back. The repl currently does not support multiline input but that would be a nice feature to add. I will look at this as soon as possible.

However, you can enable mouse interaction by removing the handlers in the ReplWidget.h file (and reinstall the widget):

void mousePressEvent(QMouseEvent ) { / Ignore */ }
...