WEBVTT


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welcome everyone uh my name is ferming i

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work as a commonwealth engineer at

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ribbon pack and today i'm going to talk

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about

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how to build an e-max

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right

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so uh let's start by defining what is an

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imax

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so that this can be a really this can be

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really hard depending on

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what you want to say what you want to

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qualify what emas is and not i'm going

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to

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get just this definition it's not the

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best but it's mine right

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so i would argue that an emacs should

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have text editing capabilities

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i wouldn't say it should be a text

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editor but it should be able to work

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really well with text

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as you have introspection and a global

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state

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so you can ask them every time

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um software itself i think it should be

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able to modify itself while running

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um so you shouldn't be static and you

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shouldn't never restart for

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any reason like in engineering max you

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can't predefine every function or every

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functionality the way you want

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and extensibility should not be limited

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with this i mean that if you add a new

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package shouldn't be a difference you

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shouldn't have an api

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to extend the software and the entire uh

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software itself should be the external

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api code

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i'll argue that's also

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um

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should be list base

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but

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um it's controversial so

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yes they're going to get this definition

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and then extend upon it so

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bear with me

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so right now uh genuine max is the best

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emacs that we have that's not the only

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one uh

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not even the first one imax but it's the

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best one that we have the one that we're

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using the one that we that i'm using

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right now and the one that we're here

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for

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but as we all know it's not perfect i'm

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going to highlight some

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um imperfection that all that we should

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know i guess that you must have

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so the first one is that uh i would

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argue that inmate lisp is a good lisp

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but it's not a general purpose

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programming language

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you can do pretty crazy things with

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emacs but i will argue that you can do

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also do that with

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brain [ __ ] i'm not comparing them i know

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with my list so much better than brain

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[ __ ] but that's not an argument in

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mclisp it's

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a language for an editor

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not for writing

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game engine for example

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um it's not the fastest lisp we all know

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this is um

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not in the middle i will say was really

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slow now it's getting better maybe with

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the c integration

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um thanks to andrea it can be even

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better but we'll see and has limited

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concurrency this will still be the case

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it has shared threats first i know

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it's not perfect and it's also not that

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fast

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and even though this for some people is

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not an issue

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i'll argue that for me it's an issue

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which is the canoe emac score is written

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in the c

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um i'm not a big fan of c i mean i have

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wrote things about c in the past and

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it's

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okay as a language but um i prefer i'll

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be in lisp so i can hack on it easily

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and really find it while it's running

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all in just one language so you don't

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have to learn two languages to get into

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it

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um even though it's just ten percent of

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emacs right but still there needs to be

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maintained and yeah

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i don't like that uh kind of uh a max

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aspect but just

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this was just my opinion okay so while

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you're like you know mac's pretty good

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you should use it

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you probably use it if you're here and

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use it every day it's great

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so

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some people in the past

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wanted to write

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an e-max of course and not the emacs

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and they think about different things

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and they attempt to write similar emacs

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like things i'm going to um

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i know there's a lot of more way more

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emacs than the one i'm going to say now

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but i just going to

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focus on the emacs that uh meets the

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criteria are not like

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uh the linux turbo's emacs right which

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is just a c

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simple e max to write c for me that may

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be uh

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an e max for the people but not for me i

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wouldn't argue that that's not

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really an emacs just an editor with

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commands similar to imax

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but

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i digress okay so the language i will

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argue that common lisp may be the best

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language

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period

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sorry about that the best language for

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writing emacs also

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um it's a timeless standard reaching in

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the 1990s is fast and reliable

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it's a great lisp i will argue that the

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best lisp but i don't want to get any

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trouble so i would just say it's great

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lisp

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um has good library support doesn't have

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like a huge library like i would say

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python or c but pretty

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robust and good library

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similar to mclisp which may seem as a

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historical accident which maybe it is

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but also in this case has some

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interesting properties that will

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be discussed

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later

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okay so

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um

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taking common lisps a language to write

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an imax i'm going to get some

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technologies in documentation that we

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can use to write an e-max in common lisp

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so the first one is mcclaim which is an

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implementation of a

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common lisp interface standard

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this is great i mean i loved how

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this is written how it is defined i like

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standard things

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um mclean it's a marvelous tool i will

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argue that it's the best

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um toolkit

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i wouldn't say there's a toolkit because

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it's way more extense than it but it's

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great i would highly recommend if you

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want to write a gui application in

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common lisp well mcclain is great

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also some people thought about

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libraries for writing emac style

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application so to create an emacs some

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people already thought about this and

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wrote a paper

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um

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one of them was robert strand

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which is the guy more interested in in

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imax like things

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and this paper is great you can get a

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lot of information how you can write

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your application get

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similar functionality and all the things

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that i said before

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and also the same

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of the

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robert strand or the guys that wrote

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that paper also wrote clefo which is

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a library for text editor buffer but

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more important it's also a definition

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so this video

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out there will where he explains

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um

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what clapper is so he wrote an

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implementation of clover but it's more

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of like a

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um

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yeah

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like a standard like a way to write

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uh how buffers or work in emacs

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and i think it's better

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in some ways that what imac genuine mac

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does right now

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um in other ways it's really interesting

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and i just have had a lot of fun

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implementing it so

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i'm using it more or less

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uh so yeah that's some great

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documentation great foundation so you

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don't have to

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i mean it's

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really

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interesting to write everything by

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yourself because you are

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a great

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programmer and you you want to have

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control of everything i understand

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everything from the ground up but we

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have to understand that

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an imax it's a really complex

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application

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and

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i will say that if you have some

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foundation it will be easier and you

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don't have to rewrite the wheel 20 times

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right

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okay so attempts uh the same guy robert

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strand

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have two climax which is emacs and emacs

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like thing written in common lisp

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um the first ones the third one is

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abandon and the second one is a work in

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progress

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um it's really interesting the second

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one uses in fact the clefor buffer

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implementation one question

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and the first one is just a mcclaim um

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front end remax so it's really tight the

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so the the

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interface retired with the api so it's

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basically i'm sickly

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um software that's similar to an emacs

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right

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and the third one it's a lem project

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which is a common lisp editor that aims

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to be really close to remax and it

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probably fits the criteria but

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and uses the encourages for the

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interface for as i know and it's really

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commonly focused so it even has some

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major modes for other languages but

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i mean it's

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um

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it's mainly for common lisp written by

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common lisp and for common list

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developers

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um so i decided to write my own emacs

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but i don't want to write everything

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from scratch

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because i'm not a creator programmer

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and also because probably there's

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something that some people already tried

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and the first thing i noticed with all

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these attempts

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that they fail in compete with emacs so

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to say they don't have an imax conf

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and they don't support genuine max

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packages

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and that's a big deal because they're

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more of the thousands packages out there

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under great

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and imagine they want to convince

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someone to say hey try this editor

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instead of x thing

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i would say okay can i use git things so

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i have to write a git

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um

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liar

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maggot or mode and i want to play tetris

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the other road so that's

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really

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hard for one person to do

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so someone

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thought similar so they say okay i'm

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going to rewrite the maxi aph common

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lisp

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it was this is what back in 2005 by sol

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bets

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sabits

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but it was banjo in 2007. the project

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was called lice

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and

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it was a really interesting approach

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um it wasn't finished and it was lost in

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time

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so my idea was to continue with the

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project so the foundation was really

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interesting even though i didn't like

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some other

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designing choices

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um but i want to continue with projects

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finished you cannot see emacs api add a

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compatibility layer to use canoe max

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packages that's the selling point right

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so you don't have to

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use new things

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i like my emacs i just want to have my

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emacs with commodities that's it and

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also better probably a better buffer

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implementation so the idea now that uh

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having an imaginativity layer

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is there improving e-max upon it right

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you can use the e-max api or the new one

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depending on your needs

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you can also have that that

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compatibility of both

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so um i come up with cedar

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um cedar is my attempt is a nice

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fork

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i will say the hug for hard fork because

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i change um

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a lot of things and add a lot of things

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but it's similar still similar

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um

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and for this demo i'm going to use the

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cidar and courses branch we want to test

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it out because the other ones are a work

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in progress so one

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it's the mclean

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club for implementation which is not

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finished and doesn't run

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and the other one is with the visual

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that's to explain here but basically

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and debugger

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it's an interesting debugger similar to

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slime

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which is the superior lisp

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for re max let's begin with max so it's

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increases base also like um

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like limb

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but um way more easy simple

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um i

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write well i translate more or less this

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list mode functionality

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and it has similar

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genuine max api

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we'll see that in the demo

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um it's usable but i work in progress

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instead of functionality right now i'm

12:33.279 --> 00:12:35.279
not focusing on stability yet i'm

12:35.279 --> 00:12:38.240
focusing finish the mclean front end

12:38.240 --> 00:12:41.120
which i'm not even halfway there

12:41.120 --> 00:12:42.720
but i hope to finish it

12:42.720 --> 00:12:45.519
maybe next year who knows

12:45.519 --> 00:12:46.959
finish the compatibility layer from the

12:46.959 --> 00:12:48.399
new max packages i seen this i think

12:48.399 --> 00:12:50.959
this is doable i know how to do it i

12:50.959 --> 00:12:52.639
just need time

12:52.639 --> 00:12:53.600
maybe

12:53.600 --> 00:12:55.760
a little bit of caffeine

12:55.760 --> 00:12:57.040
coffee

12:57.040 --> 00:12:59.279
so uh let's go with the demo right

12:59.279 --> 00:13:02.079
so uh let's open terminal what's this

13:02.079 --> 00:13:04.800
anchor base let's go to quick lisp

13:04.800 --> 00:13:06.800
log there

13:06.800 --> 00:13:11.279
um and let's run it

13:11.279 --> 00:13:13.760
okay so now that we're here um it give

13:13.760 --> 00:13:16.000
us the welcome thing this is the main

13:16.000 --> 00:13:17.519
buffer it's like we'll say the emacs

13:17.519 --> 00:13:19.200
buffer when you enter

13:19.200 --> 00:13:21.040
um so we know that it's firming this is

13:21.040 --> 00:13:22.800
not hardcoded

13:22.800 --> 00:13:25.040
okay and now we see it's a major mode in

13:25.040 --> 00:13:27.200
the bottom right lisp

13:27.200 --> 00:13:29.360
it's lisp interaction and

13:29.360 --> 00:13:32.880
this is the name of the buffer right

13:32.880 --> 00:13:35.600
um okay so we have a couple of buffers

13:35.600 --> 00:13:38.240
we have scratch which is the fundamental

13:38.240 --> 00:13:40.720
mode and messages all right

13:40.720 --> 00:13:42.399
okay so

13:42.399 --> 00:13:44.639
let's get some interesting things first

13:44.639 --> 00:13:46.399
uh let's open a file

13:46.399 --> 00:13:48.959
so i think it's in

13:48.959 --> 00:13:51.199
programming

13:51.199 --> 00:13:53.440
a max

13:53.440 --> 00:13:56.480
conf 2021 and let's go to c there

13:56.480 --> 00:13:58.079
let's go to demo

13:58.079 --> 00:14:00.000
so let's open a file so

14:00.000 --> 00:14:01.440
um

14:01.440 --> 00:14:03.040
phone lock is not yet

14:03.040 --> 00:14:04.399
um

14:04.399 --> 00:14:06.240
well it's implemented so it's there but

14:06.240 --> 00:14:07.920
it's not active by default

14:07.920 --> 00:14:09.680
so let's open

14:09.680 --> 00:14:11.360
uh mx

14:11.360 --> 00:14:13.600
and let's go lisp

14:13.600 --> 00:14:16.079
interaction mode

14:16.079 --> 00:14:17.279
right

14:17.279 --> 00:14:19.199
so this when you show me here is the

14:19.199 --> 00:14:21.680
implementation of the kill sex sex

14:21.680 --> 00:14:24.240
express s expression command

14:24.240 --> 00:14:28.880
which is exactly the same point by point

14:28.880 --> 00:14:31.279
from the emacs one you can go right now

14:31.279 --> 00:14:32.959
umax and ask

14:32.959 --> 00:14:35.279
how is skills s expression defined this

14:35.279 --> 00:14:36.480
is the same

14:36.480 --> 00:14:38.560
and this is how you define a key so we

14:38.560 --> 00:14:41.920
have we can say uh describe

14:41.920 --> 00:14:43.839
symbol

14:43.839 --> 00:14:46.399
the package will be

14:46.399 --> 00:14:48.399
cedar and the symbol is

14:48.399 --> 00:14:50.480
global map

14:50.480 --> 00:14:51.610
global map

14:51.610 --> 00:14:53.279
[Applause]

14:53.279 --> 00:14:54.240
so

14:54.240 --> 00:14:56.160
it's a top level global keymap

14:56.160 --> 00:14:58.480
thank you for the information

14:58.480 --> 00:15:02.160
um but you can also say okay uh can i

15:02.160 --> 00:15:05.120
say okay

15:05.120 --> 00:15:08.000
global map

15:08.000 --> 00:15:10.079
okay i'll be giving this a key map so

15:10.079 --> 00:15:11.600
even though i want to aim to have the

15:11.600 --> 00:15:12.480
same

15:12.480 --> 00:15:15.920
um api the

15:15.920 --> 00:15:17.760
um sorry

15:17.760 --> 00:15:20.079
uh the back thing so the back end is

15:20.079 --> 00:15:22.480
going to be class oriented and not same

15:22.480 --> 00:15:24.720
any max but the return expression should

15:24.720 --> 00:15:27.680
be really similar so if we say current

15:27.680 --> 00:15:29.759
buffer

15:29.759 --> 00:15:31.759
it will give us the buffer it's not the

15:31.759 --> 00:15:33.759
same in emacs but it's a buffer object

15:33.759 --> 00:15:35.519
and we can also ask

15:35.519 --> 00:15:37.519
about let me try to remember

15:37.519 --> 00:15:39.440
oh there we are

15:39.440 --> 00:15:40.639
um

15:40.639 --> 00:15:41.839
but for

15:41.839 --> 00:15:45.680
name we can close this and open one here

15:45.680 --> 00:15:48.079
and we can say okay so we have this

15:48.079 --> 00:15:48.959
thing

15:48.959 --> 00:15:50.959
that will give us the name so uh this is

15:50.959 --> 00:15:52.800
similar to the emacs api

15:52.800 --> 00:15:54.399
as we saw we

15:54.399 --> 00:15:55.120
so

15:55.120 --> 00:15:57.519
briefly we have a lot a couple of

15:57.519 --> 00:15:58.639
commands

15:58.639 --> 00:16:00.240
um

16:00.240 --> 00:16:02.160
kills expression also have a little bit

16:02.160 --> 00:16:03.759
of

16:03.759 --> 00:16:06.639
help kill word kill line

16:06.639 --> 00:16:07.680
region

16:07.680 --> 00:16:08.959
kill buffer

16:08.959 --> 00:16:11.440
all things that we expect from emacs

16:11.440 --> 00:16:12.800
um

16:12.800 --> 00:16:14.320
and yeah this is there's a couple of

16:14.320 --> 00:16:16.160
things i may show but i think this is

16:16.160 --> 00:16:18.320
good enough i don't have enough time if

16:18.320 --> 00:16:20.720
you want more information

16:20.720 --> 00:16:22.800
so let's go back to it let's close the

16:22.800 --> 00:16:25.680
buffer does it work no it doesn't work

16:25.680 --> 00:16:28.079
okay now the head buffer no ah let's go

16:28.079 --> 00:16:29.920
to cedar

16:29.920 --> 00:16:32.320
okay so if you want more information

16:32.320 --> 00:16:32.870
um

16:32.870 --> 00:16:34.399
[Applause]

16:34.399 --> 00:16:36.880
first of all thank you very much um

16:36.880 --> 00:16:39.040
sorry i don't have enough time to show

16:39.040 --> 00:16:40.320
too much too many things i will see

16:40.320 --> 00:16:42.560
there but um

16:42.560 --> 00:16:44.639
yeah uh

16:44.639 --> 00:16:45.839
if you want more information you can

16:45.839 --> 00:16:48.079
always send me an email this is my

16:48.079 --> 00:16:50.240
webpage

16:50.240 --> 16:53.720
thank you very much