Sv: Christmas wish: Literate Elisp

[arthur miller]

Here is a little prototype to test my idea with literal Elisp.

I have patched read-eval loop as stated in previous mail, in lread.c.

It is probably possible to implement that in Elisp, but I don't have

enough knowledge of either Emacs internals nor Elisp to do this in some

short time. It would took me a lot of time to look up all the

things I would need. Anyway, C code turned to be rather trivial, and also

completely by-passable if so desired, so I have introduced a user-customizable

variable 'emacs-lisp-allow-literal-comments', which is by default nil.

I wasn't sure in which elisp file to introduce this variable, so I have used

'simple.el' found in lisp directory of Emacs source distribution. That file

seems to have some other user customizable variables that affect elisp so I

thought it might be appropriate place.

For the byte compiler I have patched bytecomp.el, in rather brutish way, but it

seems to work. It wasn't very difficult either, but I think I have done it rather

ugly. Someone might wish to refactor that code. Anyway, it is less then

twenty lines of code, and it is by default bypassed as well. The variable

that controls it is also user customizable and found  in same file,

named 'byte-comp-allow-literal-comments'.

I have attached also a small trivial elisp file for illustration purpose.

It is just a test of an idea, and small prototype to show that it might work.

It needs more thorough testing and can probably be implemented in some better

way.

I have tested on GNU/Linux and Windows. Emacs was able to compile it's own

elisp as well as external packages I use.

As a note, the change in C is completely backwards compatible. No logical

change to elisp parser happens when 'emacs-lisp-allow-literal-comments'

variable is nil.

---

Från: Emacs-devel <emacs-devel-bounces+arthur.miller=address@hidden> för Jean-Christophe Helary <address@hidden>
Skickat: den 19 december 2019 02:50
Till: address@hidden <address@hidden>
Ämne: Re: Christmas wish: Literate Elisp

 

> On Dec 19, 2019, at 9:42, chad <address@hidden> wrote:
>
> There is a large body of existing software which will be totally unaware of your changes.

Although I think the premise of your comment is absolutely valid, I'm not so sure about the "*large* body of existing software".


Jean-Christophe Helary
-----------------------------------------------
http://mac4translators.blogspot.com @brandelune

simple.patch
Description: simple.patch

lread.patch
Description: lread.patch

bytecomp.patch
Description: bytecomp.patch

chatty.el
Description: chatty.el