Emacs support

[Sasanidas]

Hello @sasagawa888

First of all, thanks for this amazing project, I really had a lot of fun hacking with it, the source code is commented and easy to follow. The only problem that I had is that I'm a Common Lisp programmer that lives in Emacs, so I'm used to amazing tools like sly/SLIME. So I decide to contribute and to create a major-mode (a collection of behaviours that enhance the deauft language experience) and an inferior mode (a REPL interaction).

Here is the resutl Also, an usage example video

I think is fairy complete for basic interaction, Emacs has great support for lisp-like languages, so a lot of the power is leverage to it. I'm planning to add more features, but first I would like to know what do you think about it and if it is worth it include this information in the main README of the eisl repository.

Regards.

[sasagawa888]

Hello I watched the video. This is fantastic. It's convenient. Please introduce the details of how to install.

I made EISL for learning on Raspberry Pi. A small editor is included for this purpose. However, Emacs is useful for desktops.

I will describe your ISLisp-mode in the EISL README.

[Sasanidas]

I watched the video. This is fantastic. It's convenient. Please introduce the details of how to install.

Thanks! It's quite simple to install, Emacs has a variable called load-path (describe here), the package doesn't have any external dependency so adding the repository location to that variable in the Emacs initialization file(describe here) and the require statement (require 'islisp-mode) should be enough.

I tested only the package in the current Emacs version, but I don't think it can have any problems if the version is 25+.

I made EISL for learning on Raspberry Pi. A small editor is included for this purpose. However, Emacs is useful for desktops.

I see, as far as I know, Emacs works fairly well on a raspberry pi, is a very lighweight editor (compare to a more modern one like VSCode), I have a raspberry so I can test it with the default Raspbian OS (it's a Raspberry Pi 2 Model B).

I will describe your ISLisp-mode in the EISL README.

Nice, thaks for the addition :+1:

[Sasanidas]

Some features that I want to add are:

• Doc support, both in therm of small function descriptions and a full link to the specification (I already know how to do this, I will basically improve https://github.com/nenbutsu/islelisp to be more dynamic).

• Autocompletion, I notice the library file functions.lsp that can have some static information about the built in functions, my idea is to make it more dynamic, so for example if you load/compile a new library the editor knows the list of symbols loaded and can add autocompletion to it.

• ctags support, adding the ability to tag the files so it's easy to get reference and navigate between different places

• code generation, dynamic templates (snippets)

• debugger interface, I don't know yet how doable is to "follow" the debugger places.

Some of this additions will be implemented in separate packages, I totally understand that some people prefer a more simple interface to programming languages (specially if they are learning) so I will try to keep the major mode simple and to add more complex functionality in separate packages.

Also, even tho I'm mostly interested right now in Easy-ISLisp, there are other implementations out there, so I will try to keep the specific functions of each implementations in separate part of the major-mode package for clearance.

I would like to know what you guys think (@sasagawa888 @poldy) :+1:

Regards.

[sasagawa888]

Thank you for your contribution.

I don't know much about Emacs. I would appreciate any advice.

[poldy]

I use Emacs a fair bit, especially for Lisp. I have currently set up openlisp.el from the OpenLisp package and islelisp. The features I mostly use are syntax highlighting and the hyperspec lookups.

I think your package replaces both of these packages? So my init.el can be simplified, thanks.

[Sasanidas]

Regarding adding the supoort to MELPA is been discuse here.

[Sasanidas]

I'm planing on implementing more advance features to the base major mode package (islisp-mode) but will keep it disabled.

Aside from this, giving that been a teaching tool is one of the goals of the project, I will made several tutorials with plain Emacs (for beginners) using the package, in a raspberry pi. :+1:

[Sasanidas]

Issue solve! Emacs packages for writting ISLisp is on Melpa, they are divided in two:

• islisp-mode: major mode for editing files
• inferior-islisp: REPL integration with Emacs

It's more focus to eisl, mostly because it's the only implementantion I tested, but it should work on others