[TUHS] Unix taste (Re: terminal - just for fun)

[TUHS] Unix taste (Re: terminal - just for fun)

[Noel Chiappa]

    > From: "A. P. Garcia" <a.phillip.garcia at gmail.com>

    > Being so small, I expected the editor to lack a scripting language.

Well, there is a companion 'compiler' which converts extension source into
the intermediate form (byte-code) which is interpreted by the editor. But
it's even smaller (67KB!) and as fast as the editor itself.

    > I was pleasantly surprised that it does have one, and that it's a c
    > derivative ... "Extensible and modifiable" doesn't always mean the same
    > thing to everyone, and well, you're a kernel hacker.

Take a quick look at a source file, e.g. one of mine:

  http://ana-3.lcs.mit.edu/~jnc/tech/cmd.e

and you'll see i) what it's like (except for a few new editing-specific
keywords, such as 'on <key>' in function definitions, it's pretty much C),
and ii) it will give you a sense of the kind of things one writes in it, and
how easy it is to do so.

The underlying run-time basically just provides buffer, display, etc
primitives, and pretty much all the actual editor commands are written in the
'extension' languge, even simple things like 'forward character' (^F), etc.
The complete manual is available online, the run-time system is described
here:

  http://www.lugaru.com/man/Primitives.and.EEL.Subroutines.html

Epsilon comes (as of a few versions back, I haven't bothered to upgrade) with
about 22K lines of source, which is the bulk of the actual editor; that turns
into about 190KB of intermediate code.

	Noel

[TUHS] Unix taste (Re: terminal - just for fun)

[Noel Chiappa]

    > From: Benjamin Huntsman <BHuntsman at mail2.cu-portland.edu>

    > I thought it stood for Escape-Meta-Alt-Control-Shift :)

    > From: Dave Horsfall <dave at horsfall.org>

    > EMACS - Editor too large

Those are both pretty funny!


BTW, Epsilon (that 250KB Emacs that I was raving about) not only runs under
Windows, it also runs under Linux, Mac OS, FreeBSD, etc. Here:

    http://lugaru.com/

I can't say enough good things about it (hence my 30-year addiction to it).
If you want an Emacs clone that is very small; very fast; and wildly
extensible and modifiable (it comes with almost all the source), in C
(effectively); this is the one.

	Noel

[TUHS] Unix taste (Re: terminal - just for fun)

[A. P. Garcia]

On Aug 2, 2014 4:19 PM, "Noel Chiappa" <jnc at mercury.lcs.mit.edu> wrote:

<snip>
> BTW, Epsilon (that 250KB Emacs that I was raving about) not only runs
under
> Windows, it also runs under Linux, Mac OS, FreeBSD, etc. Here:
>
>     http://lugaru.com/
>
> I can't say enough good things about it (hence my 30-year addiction to
it).
> If you want an Emacs clone that is very small; very fast; and wildly
> extensible and modifiable (it comes with almost all the source), in C
> (effectively); this is the one.
>
>         Noel

That word, effectively, is an important one. Being so small, I expected the
editor to lack a scripting language. I was pleasantly surprised that it
does have one, and that it's a c derivative rather than lisp, a fine
language but not my favorite one. "Extensible and modifiable" doesn't
always mean the same thing to everyone, and well, you're a kernel hacker.

I must try this...
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[TUHS] EMACS clones (was: Unix taste (Re: terminal - just for fun))

[Greg 'groggy' Lehey]

On Saturday,  2 August 2014 at 17:18:21 -0400, Noel Chiappa wrote:
>
> BTW, Epsilon (that 250KB Emacs that I was raving about) not only runs under
> Windows, it also runs under Linux, Mac OS, FreeBSD, etc. Here:
>
>     http://lugaru.com/

Ah, that name rings a bell: the werewolf.

Yes, I used Epsilon 30 years ago as well.  Unlike you, I couldn't get
away from it fast enough.  5 years later I installed GNU Emacs on
Xenix and never looked back.

I used Epsilon mainly because Mince (Mince Is Not Complete Emacs)
didn't work on MS-DOS, but the version I had wasn't compatible enough,
and even the scripting didn't make it work the way I wanted.

Greg
--
Sent from my desktop computer.
Finger grog at FreeBSD.org for PGP public key.
See complete headers for address and phone numbers.
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[TUHS] Unix taste (Re: terminal - just for fun)

[A. P. Garcia]

On Aug 2, 2014 7:48 PM, "Noel Chiappa" <jnc at mercury.lcs.mit.edu> wrote:

<snip>
> Well, there is a companion 'compiler' which converts extension source into
> the intermediate form (byte-code) which is interpreted by the editor. But
> it's even smaller (67KB!) and as fast as the editor itself.
>
>     > I was pleasantly surprised that it does have one, and that it's a c
>     > derivative ... "Extensible and modifiable" doesn't always mean the
same
>     > thing to everyone, and well, you're a kernel hacker.
>
> Take a quick look at a source file, e.g. one of mine:
>
>   http://ana-3.lcs.mit.edu/~jnc/tech/cmd.e
>
> and you'll see i) what it's like (except for a few new editing-specific
> keywords, such as 'on <key>' in function definitions, it's pretty much C),
> and ii) it will give you a sense of the kind of things one writes in it,
and
> how easy it is to do so.
>
> The underlying run-time basically just provides buffer, display, etc
> primitives, and pretty much all the actual editor commands are written in
the
> 'extension' languge, even simple things like 'forward character' (^F),
etc.
> The complete manual is available online, the run-time system is described
> here:
>
>   http://www.lugaru.com/man/Primitives.and.EEL.Subroutines.html
>
> Epsilon comes (as of a few versions back, I haven't bothered to upgrade)
with
> about 22K lines of source, which is the bulk of the actual editor; that
turns
> into about 190KB of intermediate code.

the spirit of emacs without the bloat :-)
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