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[elpa] externals/eev fb9f4c6 64/64: Added an explanation of why eev is n


From: Stefan Monnier
Subject: [elpa] externals/eev fb9f4c6 64/64: Added an explanation of why eev is not in ELPA yet.
Date: Sun, 7 Apr 2019 16:59:15 -0400 (EDT)

branch: externals/eev
commit fb9f4c65c0229b8ec2d78e0841cb4385f946af06
Author: Eduardo Ochs <address@hidden>
Commit: Eduardo Ochs <address@hidden>

    Added an explanation of why eev is not in ELPA yet.
---
 ChangeLog       |   8 ++++
 VERSION         |   4 +-
 eev-beginner.el |   7 +--
 eev-blinks.el   |   9 ++--
 eev-intro.el    | 133 ++++++++++++++++++++++++++++++++++++++++++++------------
 eev-load.el     |  46 +++++++++++++++++++-
 6 files changed, 170 insertions(+), 37 deletions(-)

diff --git a/ChangeLog b/ChangeLog
index f0af696..447eee9 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,11 @@
+2019-04-06  Eduardo Ochs  <address@hidden>
+
+       * eev-intro.el (find-eev-install-intro): added an explanation of
+       why eev is not in ELPA yet.
+
+       * eev-load.el: added an explanation of why we have so few
+       autoloads.
+
 2019-04-01  Eduardo Ochs  <address@hidden>
 
        * eev-pdflike-old.el: deleted this file.
diff --git a/VERSION b/VERSION
index 5844baa..9fa000d 100644
--- a/VERSION
+++ b/VERSION
@@ -1,2 +1,2 @@
-Tue Apr  2 01:05:44 GMT 2019
-Mon Apr  1 22:05:44 -03 2019
+Sun Apr  7 02:05:04 GMT 2019
+Sat Apr  6 23:05:04 -03 2019
diff --git a/eev-beginner.el b/eev-beginner.el
index 42e719f..06a0381 100644
--- a/eev-beginner.el
+++ b/eev-beginner.el
@@ -19,7 +19,7 @@
 ;;
 ;; Author:     Eduardo Ochs <address@hidden>
 ;; Maintainer: Eduardo Ochs <address@hidden>
-;; Version:    2019mar29
+;; Version:    2019apr06
 ;; Keywords:   e-scripts
 ;;
 ;; Latest version: <http://angg.twu.net/eev-current/eev-beginner.el>
@@ -57,7 +57,7 @@
 ;; does not open the tutorial. See:
 ;;
 ;;    (find-eev-intro "1. `eev-mode'")
-
+;;    (find-eev "eev-load.el")
 
 
 ;; NOTE: older versions of eev loaded "eev-readme.el" instead of
@@ -82,7 +82,8 @@
 
 
 ;; This is the only autoload of eev at this moment.
-;; (find-elnode "Autoload" "magic autoload comment")
+;; See: (find-elnode "Autoload" "magic autoload comment")
+;;      (find-eev "eev-load.el" "autoloads")
 
 ;;;###autoload
 (defun eev-beginner ()
diff --git a/eev-blinks.el b/eev-blinks.el
index be452bc..f3bad84 100644
--- a/eev-blinks.el
+++ b/eev-blinks.el
@@ -23,7 +23,7 @@
 ;;
 ;; Author:     Eduardo Ochs <address@hidden>
 ;; Maintainer: Eduardo Ochs <address@hidden>
-;; Version:    2019mar05
+;; Version:    2019apr06
 ;; Keywords:   e-scripts
 ;;
 ;; Latest version: <http://angg.twu.net/eev-current/eev-blinks.el>
@@ -34,8 +34,11 @@
 
 ;;; Commentary:
 
-;; See: (find-eev-quick-intro "3. Elisp hyperlinks")
-;;      (find-links-intro "6. Basic and non-basic hyperlinks")
+;; For the general notion of elisp hyperlinks, see:
+;;   (find-eev-quick-intro "3. Elisp hyperlinks")
+;; For what are "basic elisp hyperlinks", see:
+;;   (find-links-conv-intro "3. Classification")
+;;   (find-links-conv-intro "3. Classification" "non-basic")
 
 
 
diff --git a/eev-intro.el b/eev-intro.el
index c0e886d..f5a92ca 100644
--- a/eev-intro.el
+++ b/eev-intro.el
@@ -20,7 +20,7 @@
 ;;
 ;; Author:     Eduardo Ochs <address@hidden>
 ;; Maintainer: Eduardo Ochs <address@hidden>
-;; Version:    2019apr01
+;; Version:    2019apr06
 ;; Keywords:   e-scripts
 ;;
 ;; Latest version: <http://angg.twu.net/eev-current/eev-intro.el>
@@ -1649,6 +1649,9 @@ The most basic keys of eev are:
                (find-eev-quick-intro \"3. Elisp hyperlinks\")
   M-k   - to go back.  Mnemonic: \"(k)ill buffer\".
           See: (find-eev-quick-intro \"3. Elisp hyperlinks\" \"M-k\")
+  M-K   - to go back without killing the buffer.
+          See: (find-eval-intro \"5. Going back\")
+               (find-eval-intro \"5. Going back\" \"`M-K' instead of `M-k'\")
   M-j   - to jump to certain predefined places - in particular,
               `M-j' takes you to the list of jump targets.
           `M-2 M-j' takes you to this help page.
@@ -1956,47 +1959,121 @@ incompatible with our convention of creating a script 
called
 
 
 
-5. Eev as an ELPA package
-=========================
-I started to make an Emacs \"package\" for eev but I did not go
-very far. See:
+5. Eev as an ELPA/MELPA package
+===============================
+In march 2019 I prepared a first version of an \"emacs package\"
+for eev to make it installable by `M-x list-packages' - see:
 
   (find-enode    \"Packages\")
-  (find-elnode   \"Packaging\")
   (find-efaqnode \"Packages that do not come with Emacs\")
-  (find-elnode   \"Autoload\")
 
-Eev is an atypical package and I am note sure how to handle
-autoloads in its case. I would like - *in a first moment!* - to
-make only a handful of its functions autoloadable, and to make
-each of them autoload all the main modules of eev, but I couldn't
-find (yet) how to do that...
+and sent it to the emacs-devel mailing list. Apparently it could
+go into GNU ELPA, but the developers requested several changes in
+the code, and some of them go against some important design
+decisions. I will discuss them here.
 
-Help would be greatly appreciated!
 
-Note: _100%_ of the feedback that I received about eev in the
-last years came from people who knew practically nothing about
-Emacs or GNU/Linux before trying eev. They installed it by
-copying and pasting to a terminal the script in
 
-  (find-eev-quick-intro \"1. Installing eev\")
+5.1. Byte-compilation
+---------------------
+All eev source files have a \"no-byte-compile: t\" in their local
+variables section. See:
 
-and then invoking Emacs+eev with the \"~/eev\" script. For them
-installing a package with `M-x list-packages' is too hard.
+  (find-eevgrep \"grep --color -nH -e no-byte-compile: *.el\")
+  (find-elnode \"Byte Compilation\" \"no-byte-compile: t\")
 
-If you want to change these statistics, send me a \"hi\"!
+Here is the reason. Each call to a `code-*' function defines some
+functions dynamically - for example, `(code-c-d \"e\" ...)'
+defines `find-efile' - and the best way to inspect a function
+defined in this way is by using `find-functionpp'. Try:
 
+  (find-eev-quick-intro \"9.1. `code-c-d'\")
+  (find-eev-quick-intro \"9.1. `code-c-d'\" \"(find-code-c-d\")
+  (find-code-c-d \"e\" ee-emacs-lisp-directory \"emacs\" :gz)
+  (find-efunction-links 'find-efile)
+  (symbol-function  'find-efile)
+  (find-efunctionpp 'find-efile)
+  (find-efunctionpp 'ee-efile)
+  (find-evardescr 'ee-edir)
+
+These functions are not byte-compiled, so the contents of their
+function cells are lambda expressions, which are easy to read.
+Compare:
+
+  (symbol-function  'find-efile)
+  (find-efunctionpp 'find-efile)
+  (symbol-function  'find-file)
+  (find-efunctionpp 'find-file)
 
+The relevant sections in the manual are:
 
-5.1. The experimental package for eev
--------------------------------------
-There is now an EXPERIMENTAL package for eev in ELPA with a
-single autoload. It is called \"eev\" and you can install it via
-`M-x list-packages'. To use it, install it and run `M-x
-eev-beginner'. See:
+  (find-elnode \"What Is a Function\")
+  (find-elnode \"What Is a Function\" \"lambda expression\")
+  (find-elnode \"What Is a Function\" \"byte-code function\")
+  (find-elnode \"Lambda Expressions\")
+  (find-elnode \"Function Cells\")
+
+If we don't byte-compile the modules of eev then beginners will
+have a reasonable corpus of functions for which
+`find-efunctionpp' shows something readable, which is good to
+help them understand the innards of Emacs.
+
+My view is that we have a \"new\" Emacs, that enforces
+byte-compilation and uses several data structures that are
+relatively opaque, built on top on an \"old\" Emacs that uses lots
+of simpler data structures, but in which many things are messier
+and more error-prone. I would love to add to eev functions to
+inspect these new data structures, but the \"old\" Emacs is the one
+that made me fell in love with Free Software and that made me
+spend years trying to convert people... and one of the underlying
+messages of eev is \"look, you can still use these simpler
+things\". Maybe I'm using \"simpler\" in a sense that is not very
+usual, so let me quote a paragraph from an article that I wrote
+about implementing a Forth in Lua:
+
+  \"I've met many people over the years who have been Forth
+  enthusiasts in the past, and we often end up discussing what
+  made Forth so thrilling to use at that time - and what we can
+  do to adapt its ideas to the computers of today. My personal
+  impression is that Forth's main points were not the ones that I
+  listed at the beginning of this section, and that I said that
+  were easy to quantify; rather, what was most important was that
+  nothing was hidden, there were no complex data structures
+  around with \"don't-look-at-this\" parts (think on garbage
+  collection in Lua, for example, and Lua's tables - beginners
+  need to be convinced to see these things abstractly, as the
+  concrete details of the implementation are hard), and
+  everything - code, data, dictionaries, stacks - were just
+  linear sequences of bytes, that could be read and modified
+  directly if we wished to. We had total freedom, defining new
+  words was quick, and experiments were quick to make; that gave
+  us a sense of power that was totally different from, say, the
+  one that a Python user feels today because he has huge
+  libraries at his fingertips.\"
+
+    (From: http://angg.twu.net/miniforth-article.html)
+
+
+
+5.2. Dynamic binding
+--------------------
+See the comments in:
+
+  (find-eev \"eev-template0.el\")
 
-  (find-eev \"eev-beginner.el\")
 
+
+5.3. Autoloads
+--------------
+I decided to mark only one function in eev as autoloadable -
+instead of hundreds. See the comments in:
+
+  (find-eev \"eev-load.el\")
+
+and also:
+
+  (find-eev \"README\")
+  (find-eev \"eev-beginner.el\")
 " pos-spec-list)))
 
 ;; (find-eev-install-intro)
diff --git a/eev-load.el b/eev-load.el
index 5992a0d..9f8bc4c 100644
--- a/eev-load.el
+++ b/eev-load.el
@@ -20,7 +20,7 @@
 ;;
 ;; Author:     Eduardo Ochs <address@hidden>
 ;; Maintainer: Eduardo Ochs <address@hidden>
-;; Version:    2019mar29
+;; Version:    2019apr06
 ;; Keywords:   e-scripts
 ;;
 ;; Supersedes: (find-eev "eev-all.el")
@@ -37,9 +37,53 @@
 ;; This file loads all the main modules of eev, and people who want to
 ;; read the source can use this as an index to them. The modules are
 ;; loaded more or less in the order that they are mentioned here:
+;;
 ;;   (find-eev-quick-intro)
+;;
 ;; Some of them are `require'd twice for clarity.
 
+
+
+;; Ā«autoloadsĀ»
+;;
+;; A NOTE ABOUT AUTOLOADS
+;; ======================
+;; Almost all functions in eev can be used as elisp hyperlinks, even
+;; with `eev-mode' turned off; if eev-mode is off you just have to
+;; type `C-e C-x C-e' to execute them instead of `M-e'. For example, 
+;; most function definitions in
+;;
+;;   (find-eev "eev-blinks.el")
+;;
+;; are preceded by a test in comments, and the right way to set up
+;; autoloads in eev would be one in which each one of these tests
+;; could be executed from a state in which only the autoloads file had
+;; been loaded...
+;;
+;; The standard way to do that would be to precede *each one* of these
+;; definitions with an autoload magic comment - which would mean more
+;; than a hundred autoloads. I find that ugly, so I decided to do
+;; something different:
+;;
+;;   1) to load all the main modules run this:
+;;
+;;       (require 'eev-load)
+;;
+;;   2) to load all the modules and turn eev-mode on, run:
+;;
+;;       (require 'eev-load)
+;;       (eev-mode 1)
+;;
+;; Note that the instructions above are for people who know how to set
+;; up their load-path correctly; if you are not yet one of these
+;; people, then you should start by:
+;;
+;;   (find-eev "eev-beginner.el")
+
+
+
+;; Load all the main modules of eev:
+;;
 ;; The "eev quick intro" itself, and many other intros:
 (require 'eev-intro)          ; (find-eev "eev-intro.el")
 ;;



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