Support for fish shell

[frewsxcv]

No description provided.

[jmsbtlr111]

+1

[atourkow]

+1

[dasJ]

Fish doesn't really care about POSIX compatiblity. This is going to be hard....

[Miguel-Alonso]

Hey, I actually started working on this (ahem, a month ago, wanted to create a pull request but got distracted). Now, I'm not a fish nor bash expert, but the tests pass and the only thing I was having trouble with was exposing AUTOENV_CUR_FILE and AUTOENV_CUR_DIR.

I have my code at https://github.com/loopbit/autoenv, all my changes are in two new files, activate.fish and tests/simple_comment_test.fish
Let me have a look to see if I'm missing something else and I'll do a PR.

[dasJ]

@Miguel-Alonso Thank you very much for the contribution!

I knew fish syntax was different but I thought it was at least mostly compatible with bash/sh. The work of your PR shows me otherwise: Instead, they tried to reinvent the shell.
I don't want to start an argument if this is a good idea or a dumb idea, but I don't think I can ever merge this PR.
Please don't get me wrong, your work seems to be just what it takes to bring the autoenv magic to fish. But the fish part is completely separated from the rest of autoenv so it's basically two projects in one repository and I don't really want to maintain both (testing when bugs are reported, implementing new features twice, ...).

So instead, it would be much wiser to leave the fish part out of autoenv. You could create a new repository from scratch without the bash/dash code and we could link to each other in the readmes.
As you can see with #129 and #130 I plan to change a lot of things in autoenv and it would be great if we could keep compatibility. Please let me know if you are interested in this kind of collaboration or if you have a better idea 👍

[Miguel-Alonso]

No problem at all, what you say makes total sense (and yeah, the decision to rewrite fish from scratch is weird, to say the least, but it is a nice shell).

I've just created a new repository at loopbit/autoenv_fish to keep the fish stuff. I'll make it clear in the README that it is just a translation of this project and, probably, a few versions behind the original 😄.

As for moving forward, what I'll probably do is to keep an eye on your tests and base my work on that. Does that sound good to you?

[dasJ]

@Miguel-Alonso As you can tell from my commit: it sounds perfect to me. Thank you!