Add support for fish_right_prompt

[ecraven]

Support for a right-side prompt like in zsh to show arbitrary data (mostly used for time or VCS status) would be great! As an example, see http://www.nexoid.at/tmp/rprompt.png

[ridiculousfish]

I learned about RPROMPT just today. It's awesome and I'd love to implement it.

[sorin-ionescu]

@ridiculousfish You can learn a lot from Zsh via Oh My Zsh. There are lots of features in Zsh that are not available in BASH nor Fish. BASH is not a good shell for inspiration.

Also, since Fish does not have a wide adoption, you can further clean up its syntax.

[ridiculousfish]

RPROMPT may be easy. I'll aim for fish 2.0.

[Soares]

Any word on this? It's a big feature I miss coming from zsh.

If it's difficult to do this with a fish_rprompt function or something it might be easier to add a special escape sequence in the fish_prompt string which means the rest should be right-aligned. Then again, I'm not sure if that's any easier.

[ridiculousfish]

It's still in the 2.0 milestone, so it's still something I plan to do, unless someone beats me to it.

I anticipate the difficult parts are around wrapping and window resizing.

[ridiculousfish]

This is the fish_right_prompt function

There are some line wrapping issues as anticipated. We're generally about as good as zsh (which isn't very good).

#382

[ridiculousfish]

Docs updated.