Emacs with org-mode - Universität Münster

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Emacs with org-mode
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Christoph Lehrenfeld
([email protected])
November 4, 2015
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Emacs with org-mode
2 /31
Outline
org-mode
Resources
Christoph Lehrenfeld ([email protected])
living knowledge
WWU Münster
Emacs
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Emacs with org-mode
3 /31
Outline
org-mode
Resources
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Emacs
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Emacs with org-mode
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Emacs - (More than) another editor
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Main developer: Richard Stallman
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1976-1979, Greenberg: Collection of Macros
(“Editor MACroS”) with Maclisp
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1981, Gosling: erster Emacs (in C)
with rudimentary scripting language (Mocklisp)
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1984, Stallman: GNU Emacs
(first GNU project) in Emacs Lisp (dialect to lisp)
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history
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Emacs with org-mode
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terminal-based
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keystrokes - independence of mouse (faster/remote access)
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support for many programming languages
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lots of included features (games/calendar/shell/. . . )
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lots of extensions for special features
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highly customizable
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self-documenting (good manual-structure)
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Features (a few)
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Emacs with org-mode
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Getting started
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No how-to-use, rather motivation for emacs (or similar eds.)
nice video tutorials: hack-emacs
C-h
C-h
C-h
C-h
M-x
t
b
k
f
TAB
start a tutorial for emacs
shows all active key bindings
displays command of a key binding
explains function
search/browse available functions (e.g. kill-emacs)
C-h t means pressing Control(C) and the t-key followed by (only) the
t-key.
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help commands:
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Emacs with org-mode
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My mostly used features (1)
standard editor features(fast): (search, mark, replace, . . . )
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modes: add functionality and adapt to file-type (buffer-type)
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macros (sequence of commands: record and replay)
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Emacs with org-mode
7 /31
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standard editor features(fast): (search, mark, replace, . . . )
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modes: add functionality and adapt to file-type (buffer-type)
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macros (sequence of commands: record and replay)
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autocompletion, tags (index of key words and ‘jump’ access to
definitions)
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sessions (set of “buffers” for a project)
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compilation-mode (error/warnings jump to line)
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coding:
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Emacs with org-mode
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latex:
flyspell-mode (spell checker)
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preview-latex, “compilation”, reftex-mode (list-access to
labels, bib-entries..)
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Emacs with org-mode
8 /31
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flyspell-mode (spell checker)
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preview-latex, “compilation”, reftex-mode (list-access to
labels, bib-entries..)
org-mode
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taking notes / preparation of talks / documentation
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export to html/latex/beamer/pdf/markdown (/ source code)
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latex:
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Emacs with org-mode
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Usage of features
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How to use all these features?
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Emacs with org-mode
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https://xkcd.com/378/
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shortcuts/keystrokes for everything
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Emacs with org-mode
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My emacs
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availability of features (fast/simple)
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good documentation
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features should help you
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It doesn’t matter what your editor is capable of!
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Emacs with org-mode
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My emacs
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availability of features (fast/simple)
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good documentation
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features should help you
How do I get my emacs to do what I want?
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It doesn’t matter what your editor is capable of!
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Emacs with org-mode
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customization
Set Preferences
Extend basic settings with config-files
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Bind your keys to (sequences of) commands
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How do I do that ?
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user interface via “M-x customize-variable”
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Emacs with org-mode
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scripting language (dialect to lisp)
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emacs is written in emacs lisp (and C)
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your configuration files are written in emacs lisp
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makes emacs highly customizable
key bindings
(global-set-key (kbd "M-r") ’recompile)
(global-set-key (kbd "<f5>") ’revert-buffer)
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emacs lisp
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Emacs with org-mode
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emacs lisp (more advanced)
(defun prelude-google ()
"Googles a query or region if any."
(interactive)
(browse-url
(concat
"http://www.google.com/search?ie=utf-8&oe=utf-8&q="
(if mark-active
(buffer-substring (region-beginning) (region-end))
(read-string "Google: ")))))
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(sort of) new functionality
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Emacs with org-mode
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https://xkcd.com/1172/
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high level of customization
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Emacs with org-mode
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There are other nice text editors out there (Sublime, vi(m), ..)
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cedet is an IDE for emacs (. . . )
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REPL (Read-eval-print loop) for script languages (python, lisp,
..) can nicely be done with emacs
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Not everybody loves emacs: “a great operating system, lacking
only a decent editor”
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some remarks on emacs
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Emacs with org-mode
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There are other good editors
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Emacs with org-mode
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Outline
org-mode
Resources
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Emacs
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Emacs with org-mode
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Original developer: Carsten Dominik
Created 2003 to organize his life and work as a scientist
slogan: “org-mode: Your life in plain text”
aims:
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note taking
project planning
authoring (e.g. this talk!)
documentation (source code, literate programming)
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Origin and goals
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Emacs with org-mode
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everything in plain text (version control)
(similar to Wiki-world but better!)
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outlining
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note-taking
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hyperlinks
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spreadsheet features
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TODO lists
literate programming (org-babel)
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documentation contains source code which can be extracted
an emacs-mode
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Main features
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Emacs with org-mode
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org-mode as an emacs-mode
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highly customizable
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integrates into other modes (latex/c++/..)
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is bound to emacs :(
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Emacs-mode
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Emacs with org-mode
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org-mode files as documents
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lists
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tables
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formulas (full latex!)
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images
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hyperlinks
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...
Exports to HTML/latex/beamer/pdf/markdown/ . . .
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Similar to Wikis
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Emacs with org-mode
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Note-taking example
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Emacs with org-mode
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Literate programming
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Extensive documentation of your source code
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Extract source code from the same file as the documentation!
double myf(double x)
{
return sqrt(x)+sqrt(1-x)+1-2.0*x;
}
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Write documentation around your source code.
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Emacs with org-mode
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Working with source code (org-babel) (octave)
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A = [1,3;9,26];
[eigvec,eigval]=eig(A)
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Octave code
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Emacs with org-mode
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The output
eigvec =
-0.94513
0.32670
-0.11446
-0.99343
A = [1,3;9,26];
eigval =
[eigvec,eigval]=eig(A)
Diagonal Matrix
-0.036986
0
0
27.036986
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Octave code
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Emacs with org-mode
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Working with source code (org-babel) (python)
Python code
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a = ["apfel","gurken","elefanten"]
b = ["baum","truppe","parkschein"]
c = [ c+d for [c,d] in zip(a,b)]
print(c)
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Emacs with org-mode
27 /31
Working with source code (org-babel) (python)
Python code
The output
[’apfelbaum’, ’gurkentruppe’, ’elefantenparkschein’]
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a = ["apfel","gurken","elefanten"]
b = ["baum","truppe","parkschein"]
c = [ c+d for [c,d] in zip(a,b)]
print(c)
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Emacs with org-mode
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Working with source code (org-babel) (shell)
Shell code
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uname -o -n -r
emacs --version | head -n 1
grep "model name" /proc/cpuinfo | head -n 1
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Emacs with org-mode
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Working with source code (org-babel) (shell)
Shell code
The output
schrustux 4.1.4-1-ARCH GNU/Linux
GNU Emacs 24.5.1
model name
: Intel(R) Core(TM) i5-4300U CPU @ 1.90GHz
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uname -o -n -r
emacs --version | head -n 1
grep "model name" /proc/cpuinfo | head -n 1
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Emacs with org-mode
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Working with source code (remarks)
result-regions are created in org-mode on
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demand (C-c C-c)
export
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export of documentation into several files
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well-suited for tutorials or lectures
(source code is exactly the same as in the documentation!)
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Emacs with org-mode
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Outline
org-mode
Resources
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Emacs
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Emacs with org-mode
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links/references
emacs
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org-mode
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https://www.gnu.org/software/emacs/
http://orgmode.org/manual/
both:
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hack-emacs (youtube tutorials for emacs/org-mode)
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Emacs with org-mode - Universität Münster

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