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Re: Ruby on Rails with emacs24

From: Dmitry Gutov
Subject: Re: Ruby on Rails with emacs24
Date: Mon, 22 Jul 2013 03:00:19 +0400
User-agent: Gnus/5.13 (Gnus v5.13) Emacs/24.3.50 (windows-nt)

Hi Markus,

> Am 21.07.2013 15:03, schrieb Markus Grunwald:
>> I'm an emacs on linux user and just starting to learn ruby on rails. I
>> was quite surprised that emacs support for RoR seems to be … well …
>> suboptimal ;)

Indeed, there's been some stagnation there.

>> There's a rails-mode, but that's it. I've found tons of information about
>> nxhtml, rinari, mumamo, rails, emacs-rails and whatnot. I read lots of
>> posts on But all of the sources that I got were from
>> stone age and didn't either match the current ruby nor the current emacs
>> version :(

That's the curse of EmacsWiki: old, outdated content. Reams of it!

If you enumerate the wiki pages and instructions that failed for you,
I'll try to make time to fix or remove the wrong entries.

>> Some things worked fine (flymake for example, or a few
>> shortcuts from emacs-rails) others were completely messed up like mumamo
>> which auto-inserts syntax errors and spams my *Messages* buffer.

Yeah, I wouldn't recommend nXhtml/MuMaMo.

>> Could someone please point me to current ruby on rails support on emacs?
>> Or is there only the rails-mode from emacs24?

I've no idea what's this `rails-mode' you're of. There is an old, mostly
unmaintained package called `emacs-rails', but I wouldn't recommend it
for these and some other reasons.

Rinari [0] is the current tool of choice for jumping between related files
and launching Rails console in a buffer. If you can't get it to work,
first search the issues, then maybe create a new one. Or post a question

When you're more comfortable with the setup, you can try Robe, for
somewhat better completion, docs and jump-to-definition [1]. Beware:
it's in persistent alpha state, so expect to encounter (and hopefully
report) bugs and missing features.

Also see Steve's config for how the pieces come together [2]. Maybe fork
it and use it yourself, like many people do.

Andreas Röhler <> writes:

> You could try

Yes, web-mode wouldn't be the worst choice for ERB. Personally, I don't
like how the codebase looks and some choices the author made (like not
using the indentation code from existing major modes, for Ruby, JS, etc,
and re-implementing indentation code from scratch; same with syntax

So for ERB and EJS I recommend mmm-mode [3], there are sample settings
in the comment at the top of `mmm-erb.el'. It's slower (thus less
suitable for large files), but IME more accurate.

> Don't know, how far ruby-support goes. Author of nxhtml, which did a great 
> work, seems not reachable any more.
> Does somebody know about him?

Last time I've seen a message from him he we saying that he was busy.
Anyway, I don't imagine working on MuMaMo (in its current state) can be
much fun.


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