Use ! instead . to make "--break-system-package" clickable

[elsamuko]

This PR changes the . as last character to !, because then I can double-click-select --break-system-package without the ..

Workflow:

• I want to install a pip
• pip complains:

note: If you believe this is a mistake, please contact your Python installation or OS distribution provider. You can override this, at the risk of breaking your Python installation or OS, by passing --break-system-packages.

• I double click on --break-system-packages.
• I paste it with center mouse button
• I remove the . <-- the PR saves this step
• I install the package

[elsamuko]

PS: I did not create a NEWS entry, because this is a very minor fix. How do I add a no-news-marker?

[uranusjr]

This looks more like a bug in your terminal emulator, not a thing worth changing in the code base TBH.

[elsamuko]

@uranusjr This is the default behaviour at least in

• guake
• xfce4-terminal
• gnome-terminal
• konsole
• terminator
• tilix
• tilda
• cool-retro-term
• alacritty

So this fix would be nice for users of these terminal emulators.

[pfmoore]

An exclamation mark gives the message a different meaning, which I don't think we should do. And (at least on Windows Terminal) double clicking includes the ! just as much as it includes the .. In any case, I agree with @uranusjr - take this up with your terminal emulator developers if you don't like this behaviour. It's not like other applications use options that end with a dot, so this would be just as much of an issue everywhere. Personally, in situations like this, I either select using a mouse drag, or double click and then delete the extra charater when I paste. It's really not that hard.

Also, the message isn't intended for easy copy/paste. It's explicitly saying this is a bad thing to do - why should we make it easy to do it anyway?

[elsamuko]

Hm, instead of the !, a . or a ; could be used too.

I thought that it would make it easier to try out a python module, even if it can mess with the python installation.