C-x b <filename>	Select buffer by filename; with autocompletion
C-x C-f	'Find file' - open a file
C-x C-s	Save buffer
C-x s	Save all buffers; prompts per changed buffer
C-x s !	Save all buffers; no prompting
C-x C-v <RET>	Reload current buffer; useful for resetting R/W
C-x k <enter>	Kill current buffer without closing window
C-x o	Go to next window
C-x 0	Close current window without killing buffer
C-x 2	Split current window vertical
C-x 3	Split current window horizontal

Keys	Action	Comment
C-s	Search forward
C-s M-c	Search case sensitive	M-c is a toggle
C-r	Search back	Use after C-s
C-s (C-w)*	Select (expanding) word under cursor	Use after C-s
C-M-s	Search by regex	NB: \{ \}
C-x C-e	run elisp function	Place cursor at end brace
C-h f	get elisp function doc	Set cursor on name
TAB	Outline: cycle visibility	i.e. open/close outlines
<shift>-<insert>	Paste
C-<shift>-<backspace>	Delete line
M-1 M-! shell-cmd	run shell command
C-h v var-name	Show variable
C-c C-l	Create/edit external link
C-c C-o	Open link under cursor in new window
C-x 8 C-h	Help page for accented char's
C-x 8 ' e	Accents; given combination: é	Should work for all emacs modes
C-c C-f	Toggle folding of block	For modes that support it
C-x 8 RET #x20AC RET	Euro sign €
M-x sort-lines	sort lines in current selection
M-x *-mode <tab>	List all interactive commands ending in '-mode'	Prefix: just hit Tab, no *
<shift>-left click	Adjust font size menu	Click in text area

Prefix these with M-x. Notably, major modes can be set here.

load-file <RET> <RET>	reload current file - handy for .emacs
customize-option <name>	use emacs option screen for changing settings
set-variable RET tab-width RET 4 RET	Change tab width for local buffer

Lisp functions: use C-x C-e at end to run (eg in scratch buffer)

(dired "/wim@quinte:~")	Show dir listing on remote machine
	- Leaving out user works
	- Refresh with single key 'g'
	- '/' required

Byte-compile everything in .emacs.d/elpa

To avoid warnings when uploading wiki

Source

> C-u 0 M-x byte-recompile-directory
> Directory: ~/.emacs.d/elpa

Major modes. Others work analogously; useful for eg. syntax highlighting.

• c++-mode
• markdown-mode
• ruby-mode

Useful minor modes

hs-minor-mode

enable folding in current buffer

Following useful vim-keys also work in evil-mode:

NOTES

• emacs folding binded to C-c s, C-c h in .emacs.
• In vim, lower case does action on current level, upper case on all lower levels as well. Evil mode does not implement this well.
• Works better if cursor is on a brace, or within (c++)

za	toggle current fold current level
zR, zM	open, close all folds
zo, zc	open, close current fold

C-z	Toggle evil mode - conflicts with undo!

E.g. for shell:

(org-babel-do-load-languages
 'org-babel-load-languages '((sh . t)))

Following occurs during export to html:

Wrong type argument: org-export-backend, [cl-struct-org-export-backend nil html ((footnote-reference . ignore) (link lambda (object c i) c) (radio-target lambda (object c i) c) (target . ignore)) nil nil nil nil]

Source

Solution: delete all .elc files in org package. Date postfix will differ

cd ~/.emacs.d/elpa/org-
cd org-20181008/ cd org-ac-20170401.1307/ cd org-ref-20181010.2343/
rm -r *.elc

Keys	Action	Comment
C-c C-c	Export commands
C-c C-e	Publish org file
" " h h	Publish to html
C-c C-c p	markdown preview	bare display in browser
\\	extra line break	at end of line

M-x org-display-inline-images	show linked images
M-x org-remove-inline-images	hide linked images

• # Comment (start of line, one space)
• bold
• `*backticks override*`
• italic
• underlined
• verbatim
• code
• strike-through
• super^script
• sub_script
• Text with a new-style footnote ¹

Source: see link under 'links'

---

Source

Note: ': ' prefix must me at start of line, space after

* This Is A Heading
 ** This Is A Sub-Heading
 *** And A Sub-Sub-Heading

horizontal rule (at least 5 dashes)
-----

 Paragraphs are separated by at least one empty line.

 *bold* /italic/ _underlined_ +strikethrough+ =monospaced=
 [[http://Karl-Voit.at][Link description]]
 http://Karl-Voit.at → link without description

 : Simple pre-formatted text such as for source code.
 : This also respects the line breaks. *bold* is not bold here.

 - list item
 - another item
   - sub-item
     1. also enumerated
     2. if you like
 - [ ] yet to be done
 - [X] item which is done   

• Source block examples
• Emphasis and monospace
• Minimal example for literate programming with noweb in emacs org-mode

C-c C-t	Cycle state todo->done->nothing
M-<right/left>	Lower/raise current outline item	Select first!
M-S-<right/left>	Lower/raise outline item + children	First attempt usually fails, just redo
C-c C-e	Export, opens help screen
C-c C-x C-v	Toggle inline images

(setq org-confirm-babel-evaluate nil)

For local network:

> cd ~/project/blog/jekyll-simple
> jekyll serve --host 192.168.1.16

In serve mode, changes in posts get picked up automatically.

> C-c C-e P x wim

BEGIN_HTML uses the html raw in the page:

Welcome back to the 90's

BEGIN_EXPORT html formats the html so that the tags are visible:

This is the first attempt that actually worked:

WTF

Welcome back to the 90's!
poepkat, is this really going to work??

WTF

Welcome back to the 90's!
Little piggy, is this really going to work??

on first line:

-*- coding: utf-8 -*-

… limited success with org-mode export

Tutorial said to put this at the top of an org-mode file:

MY PROJECT -*- mode: org -*-

However, emacs picks up org-mode up from the extension. Also, given line is interpreted as the document title on export to HTML.

> sudo zypper in texlive-capt-of

Due to error during pdf generation

Source - skipped using lisp functions

• C-c ? for references
• C-c } for inline ref's
• C-c C-c on formula for recalc
• C-u C-c * on table for full recalc
• C-c = in cell; edit column formula in minibuffer
• C-u C-c = in cell; edit column formula in minibuffer
• functions used come from Calc. Doc, Function index.
• := for field formula, = for column formula

Formula's

• 'this row' is default

Student	Maths	Physics	Mean
Bertrand	13	19	16
Henri	15	14	14.5
Arnold	17	13	15
Means	15	15.333333	15.166667