melpa compatability

.github/workflows/test.yml

@@ -0,0 +1,42 @@
+name: CI
+
+on:
+  push:
+    paths-ignore:
+      - '**.md'
+  pull_request:
+    paths-ignore:
+      - '**.md'
+
+jobs:
+  test:
+    runs-on: ubuntu-latest
+    strategy:
+      matrix:
+        emacs_version:
+          - 27.2
+          - 26.3
+          - 25.3
+
+    steps:
+    - name: Set up Emacs
+      uses: purcell/setup-emacs@master
+      with:
+        version: ${{matrix.emacs_version}}
+
+    - name: Install Eldev
+      run: curl -fsSL https://raw.github.com/doublep/eldev/master/webinstall/github-eldev | sh
+
+    - name: Check out the elisp source code
+      uses: actions/checkout@v2
+
+    - name: Test the uncompiled source
+      run: |
+        cd el
+        eldev -p -dtT test
+
+    - name: Compile and run tests again
+      run: |
+        cd el
+        eldev compile
+        eldev -p -dtT test

.gitignore

@@ -1 +1,2 @@
 *~
+*.elc

README.org

@@ -3,10 +3,21 @@
 #+STARTUP: showstars
 
 ** Why do I even?
-[[https://orgmode.org/][Org-mode]] makes [[http://literateprogramming.com/][literate programming]] easy via [[https://orgmode.org/worg/library-of-babel.html][Library of Babel]]. Il simply allows to mix text with executable /code blocks/ (which can also be extracted (/tangled/) into separate, executable files. The beauty of the Library of Babel implementation in org-mode lies in the fact that it supports many languages. I craved support for [[https://github.com/supercollider/supercollider][SuperCollider]] and craving became an itch when I needed to document a working pipeline alternating between executing sclang and shell scripts. I scratched an itch with this little module.
+[[https://orgmode.org/][Org-mode]] makes [[http://literateprogramming.com/][literate programming]] easy via [[https://orgmode.org/worg/library-of-babel.html][Library of Babel]]. Il simply allows to mix text with executable /code blocks/ which can also be extracted (/tangled/) into separate, executable files. The beauty of the Library of Babel implementation in org-mode lies in the fact that it supports many languages. I craved support for [[https://github.com/supercollider/supercollider][SuperCollider]] and craving became an itch when I needed to document a working pipeline alternating between executing sclang and shell scripts. I scratched an itch with this little module.
 
 ** How to install?
-First of all, you will need emacs (>=25) and SuperCollider (with emacs support) installed. Modern emacsen and Spacemacs come with bundled org-mode. At this point I am the sole user of this plugin and have just written it so I am not itching yet for MELPA or inclusion in the official org-mode repositories, so installation is manual. You can either drop [[file:ob-sclang.el]] somewhere in your Emacs' path or add its containing directory to ~load-path~ in =.init= file:
+First of all, you will need emacs (>=26) and SuperCollider (with emacs support) installed. Modern emacsen and Spacemacs come with bundled org-mode.
+
+It can be installed as a package  via [[https://melpa.org/#/i-ching][Melpa]]  or manually.
+
+#+BEGIN_SRC emacs-lisp
+(use-package ob-sclang
+   :config (org-babel-do-load-languages
+            'org-babel-load-languages
+            '((sclang . t))))
+#+END_SRC
+
+To install manually  you can either drop [[file:ob-sclang.el]] somewhere in your Emacs' path or add its containing directory to ~load-path~ in =.init= file:
 
 #+BEGIN_SRC elisp
  (add-to-list 'load-path "/path/to/ob-sclang/")

ob-sclang.el

@@ -1,11 +1,12 @@
-;;; ob-sclang.el --- org-babel functions for sclang evaluation
+;;; ob-sclang.el --- Org-babel interface for SuperCollider  -*- coding: utf-8;
 
 ;; Copyright (C) 2018 Michal Seta
 
 ;; Author: Michal Seta
-;; Keywords: supercollider, literate programming, reproducible research
+;; Keywords: supercollider, literate programming, multimedia, languages, tools
-;; Homepage: https://github.com/djiamnot/ob-sclang.git
+;; URL: https://github.com/djiamnot/ob-sclang
-;; Version: 0.02
+;; Package-Requires: ((emacs "26.1") (sclang "1.0"))
+;; Version: 0.3
 
 ;;; License:
 
@@ -24,21 +25,21 @@
 ;; Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
 ;; Boston, MA 02110-1301, USA.
 
-;;; Requirements:
+;;; Commentary:
-;;; sclang requires SuperCollider, of course. You need to have both the SuperCollider
+;; ob-sclang enables SuperCollider source blocks to be used in org files
-;;; system installed and the sclang-mode
+
-;;; SuperCollider can be found at https://github.com/supercollider/supercollider
 
 ;;; Code:
 (require 'ob)
 (require 'sclang)
 
-;; optionally define a file extension for this language
+;; add file extensions for sclang
 (add-to-list 'org-babel-tangle-lang-exts '("sclang" . "scd"))
 
-;; optionally declare default header arguments for this language
+;; declare default header arguments for sclang code blocks
 (defvar org-babel-default-header-args:sclang
-  '((:results . "none")))
+  '((:session . "*SCLang:Workspace*")
+    (:result . "none")))
 
 (defun org-babel-expand-body:sclang (body params)
   "Expand BODY according to PARAMS, return the expanded body."
@@ -56,37 +57,34 @@
     body))
 
 (defun org-babel-sclang-var-to-sclang (var)
-  "Convert an elisp value to a string of sclang code represting the value of the
+  "Convert an elisp value VAR to a string of sclang code.
-  variable with correct type."
+The value of the variable should be represented with correct type."
   (if (listp var)
       (concat "[" (mapconcat #'org-babel-sclang-var-to-sclang var ", ") "]")
     (cond ((stringp var) (format "%S" var))
           ((floatp var) (format "%f" var))
           ((integerp var) (format "%d" var))
-          ((symbolp var) (concat (format "%S" (symbol-name var)) ".asSymbol")))
+          ((symbolp var) (concat (format "%S" (symbol-name var)) ".asSymbol")))))
-    ))
 
 (defun org-babel-execute:sclang (body params)
-  "Execute a block of Sclang code with org-babel.
+  "Execute a block of sclang code with org-babel.
-This function is called by `org-babel-execute-src-block'"
+This function is called by `org-babel-execute-src-block' with BODY and PARAMS"
-
+  (sclang-eval-string (org-babel-expand-body:sclang body params)))
-  (sclang-eval-string (org-babel-expand-body:sclang body params))
-  )
 
 (defun org-babel-prep-session:sclang (session params)
   "Prepare SESSION according to the header arguments specified in PARAMS."
-  (error "No need for session preparation")
+  (message "No need for session preparation"))
-  )
 
 (defun org-babel-sclang-initiate-session (&optional session)
-  "If there is not a current inferior-process-buffer in SESSION then create.
+  "If there is not a current inferior-process-buffer in SESSION then create one.
 Return the initialized session."
   (unless (string= session "none")
-    (let (session (if sclang-library-initialized-p
+    (let ((session (if sclang-library-initialized-p
                       sclang-post-buffer
                     (save-window-excursion
                       (sclang-start)
-                      (current-buffer) ))))))
+                      (current-buffer)))))
+      session)))
 
 (provide 'ob-sclang)
 ;;; ob-sclang.el ends here