Hyper: Support for vertical selection

[kenorb]

• [X] I am on the latest Hyper.app version

• [X] I have searched the issues of this repo and believe that this is not a duplicate

• OS version and name: 10.13.2 (17C2120)

• Hyper.app version: Hyper 1.4.8 (stable)

Issue

In _Terminal_ app I could press _Alt_ key and make a vertical selection, similar in iTerm. E.g.

However vertical selection is not supported in Hyper.

[chabou]

In our v2, selection is handled by xterm.js.
Thus, we need to implement this in xterm.js repository.

[Stanzilla]

Hey there, to verify if this is indeed a Hyper issue or upstream at https://github.com/xtermjs/xterm.js/ could you please test if another xterm.js powered terminal shows the same problem you are experiencing? I suggest using https://github.com/Microsoft/vscode for testing. Thanks!

[kenorb]

Seems it's fixed now in upstream.

[Tyriar]

You'll get this just by upgrading to 3.5 which was just released 👍, though you will need to expose macOptionClickForcesSelection if you want to enable alt+click to force selection on macOS (more info at https://github.com/xtermjs/xterm.js/releases/tag/3.5.0).