[Plugin] EnvVarEditor - GUI editor for Sigil's environment variables

[BeckyEbook]

@DiapDealer: Yes, the current version of AppImage would be great.

EDIT:
Unknown lines are saved here:

                    # unknown
                    lines.append(stripped)

@KevinH: Indeed, I had to merge the saved information (some from the dialog box and the rest, the unknown ones, from the file). Thank you.

[DiapDealer]

Originally Posted by BeckyEbook

@DiapDealer: Yes, the current version of AppImage would be great.

Happy to get you one. Though I don't think this is a Linux issue at this point:

https://github.com/dougmassay/win-qt...s/tag/v5.212-1

There's a Sigil-2.6.2-x86_64.AppImage asset at that link.

0.1.2 is now preserving my custom/unknown variables. Thanks! But now I notice that unchecking some boxes in the gui (like for SIGIL_SKIP_UPDATE_CHECK) does not remove (or change) that variable in the file. It stays SIGIL_SKIP_UPDATE_CHECK=1.

[BeckyEbook]

I ran a few tests and I hope that both objectives were achieved: restoring the broken deletion of entries without selection or entered values, and preserving unknown environment variables.