Keybindings by ttscoff

DefaultKeyBindings.dict file (~/Library/KeyBindings/DefaultKeyBindings.dict) for Mac OS X, created by Brett Terpstra and based heavily on work done by Lri. Please note that these bindings won't work in all applications: TextWrangler and TextMate, for example, override these with their own settings. See Lri's gists and website for more coding madness.

Installation: Copy the DefaultKeyBindings.dict file to the ~/Library/KeyBindings/ directory (create KeyBindings if it doesn't already exist). Any open applications will need to be re-started before the key bindings will take effect -- or log out and log back in.

Documentation (last updated 04/23/2012.)

Grouped items begin with the groups shortcut (if exists), followed by a subgroup (if exists) followed by the keys specified.

General Commands

General Commands
Key	Function
^y	replace yank: command with yankAndSelect for use with the kill ring ( defaults write -g NSTextKillRingSize -string 6)
^⇧u	uppercase word
^⌥u	lowercase word
^⇧t	titlecase word
^⌥⇧u	uppercase current paragraph
^⌥t	titlecase paragraph
^w	delete word before cursor
⌥w	select word
⌥⇧s	select entire line/paragraph
⌥s	select from beginning of paragrah to last character
⌥d	delete line/paragraph
⌥y	copy paragraph
⌥x	cut paragraph
⌥p	paste paragraph below
⌥⇧p	paste paragraph above
^⇧a	select to beginning of paragraph and copy
^⇧e	select to end of paragraph and copy
⌥q	cut to beginning of paragraph
⌥k	cut to end of paragraph
⌥o	blank line after current
⌥⇧o	blank line before current
^⌘k	move line up
^⌘j	move line down
^⌘l	indent line
^⌘h	outdent line (one tab or char)
^⌘↑	move line up ( same commands but with arrow keys)
^⌘↓	move line down
^⌘→	indent line
^⌘←	outdent line (one tab or char)
^⇧⌘←	Full outdent - Deletes all leading space of line/paragraph (updated) ( Control-shift-command-left arrow)
⌘⌥⇧↑	modify selection up by paragraph (Command Option Shift Up)
⌘⌥⇧↓	modify selection down by paragraph (Command Option Shift Down)
^⌥⇧←	modify selection left by word
^⌥⇧→	modify selection right by word
⌘⌥^←	Move to first Alphanumeric character of line (new)
⌘⌥←	Move to first non-whitespace character of line (new)
⌘⌥⇧←	Select to first character of line with leading space (new)
⌥⌘→	Move to last non-whitespace character of paragraph (new)
^⌥→	Move to end of paragraph and delete trailing whitespace (new)
⌘↩	TextMate Command-Return (Command Enter)
⌘⇧↩	Insert blank line above paragraph (Command Shift Enter)
⌥_	hyphenate next space and move to next word ( this will kill non alphanumeric symbols and punctuation, use only on words)
⌥1	bookmark
⌥2	jump to bookmark
⌥⌘↩	Continue a list item with indentation and include the same delimiter ( Command Option Enter)
⇧⇥	remove one tab (or character) from start of line (outdent) ( Shift Tab)
⌘⌥b	bold selection (Markdown)
⌘⌥i	italicize selection (Markdown)
⌘⌥=	increase markdown header level
⌘⌥-	decrease markdown header level
^⌥↩	Add hard break for current line and insert newline below (new)
^⌘↩	Break line at cursor and add Markdown hard line break (new)
^<	Make selected text into paired HTML tag. Allows attributes, only dupes first word into closing tag (caveat: overwrites your pasteboard)
⌥r	repeat character before cursor
⌘⇧⌦	Forward delete to end of paragraph
⌘⇧⌫	Delete to beginning of paragraph
⌘⌥7	Right mouse click (useless, doesn’t maintain cursor position)

Commenting commands

Commenting commands (^⌘c)
^⌘c	/	comment with “//”
^⌘c	\	comment with “#”
^⌘c	!	HTML commenting
^⌘c	*	Css Commenting

Multi-stroke Markdown commands

Multi-stroke Markdown commands (^⌘w)
^⌘w		␍	force carriage return in text field
^⌘w		⇥	force tab in text field
^⌘w		\	insert reference link `[selection][[cursor]]`
^⌘w		\	insert reference `[selection]: [cursor]`
^⌘w		+	Unordered list item with
^⌘w		-	Unordered list item with -
^⌘w		*	Unordered list item with *
^⌘w		8	convert current numbered list item to bullet, handles indentation
^⌘w		1	convert current bullet list item to numbered
Headlines (removes leading whitespace after inserting hashmarks) (h)
^⌘w	h	1	#
^⌘w	h	2	##
^⌘w	h	3	###
^⌘w	h	4	####
^⌘w	h	5	#####
^⌘w	h	6	######

Markdown link (l)
^⌘w	l	t	create a link for selected text, cursor between () `[selected text]([cursor])` ( links without selected text first, these can produce a mess using multiple clipboards make a text selection before you run them)
^⌘w	l	c	create a link for selected text, inserting clipboard as url `[[cursor]selected text](clipboard contents)`

Link as image (i)
^⌘w	i	t	same as lt, but with image syntax `![selected text]([cursor])`
^⌘w	i	c	same as lc, but with image syntax `![selected text](clipboard)`

Reference links (:)
^⌘w	:	t	create a reference from selected text
^⌘w	:	c	create a reference from selected text, clipboard as url

HTML commands

HTML commands (^⌘e)
^⌘e		=	=“[cursor]”
^⌘e		e	entity &[cursor];
^⌘e		/	http://
^⌘e		t	Make previous word into paired HTML tag
HTML Links (a)
^⌘e	a	t	Insert HTML link for selected text, leave cursor in the href with “http://” selected
^⌘e	a	c	Insert HTML link with clipboard as href

HTML Image (i)
^⌘e	i	t	Insert image tag, any selected text is alt text, leave cursor in src attribute
^⌘e	i	c	Insert image tag, clipboard as src, any selected text as alt, leave cursor at beginning of alt attribute

Surround commands

Surround commands (^⌘s)
^⌘s	(	wrap () with spaces
^⌘s	)	wrap () no spaces
^⌘s	\	wrap [] with spaces
^⌘s	\	wrap [] no spaces
^⌘s	{	wrap {} with spaces
^⌘s	}	wrap {} no spaces
^⌘s	<	wrap <> with spaces
^⌘s	>	wrap <> no spaces
^⌘s	’	wrap single quotes
^⌘s	`	wrap backticks

This documentation is generated automatically from the comments and commands in the DefaultKeyBinding.dict file. The script document_keybindings.rb is free for use, but it's specifically designed for use with my formatting in the bindings plist (i.e. it's a little finicky).