Navigating Indents in Vim

.vimrc

" Indent navigation in vim - https://gist.github.com/gists/2467046/
" Adapted from http://vim.wikia.com/wiki/Back_and_forth_between_indented_lines_again
"   Use Option+hjkl to navigate to the start/end of indents, or move in/out of indented code
"   Additionally, combine the actions <, >, d, and y with these four movements
"   This is useful for quickly performing actions on functions, objects, anything that begins and ends with a matching indent level
"
"   Examples:
"     <opt-j> at a function's start moves to the end of the function
"     ><opt-j> at a function's start indents the whole function another level. 
"     y<opt-k> at a function's end yanks the entire thing
"     d<opt-l> at a function's start will delete the function's contents
"     <<opt-h> inside a function will unindent the function (by traveling up one indent level, then <ing)

function! MoveIndent(forward, outerlevel, innerlevel)
	let line = line('.')
	let column = col('.')
	let lastline = line('$')
	let indent = indent(line)
	let stepvalue = a:forward ? 1 : -1
	while (line > 0 && line <= lastline)
		let line = line + stepvalue
		if (a:out && indent(line) < indent || a:in && indent(line) > indent || indent(line) == indent && !a:out && !a:in)
			if (strlen(getline(line)) > 0)
				exe line
				exe "normal " column . "|"
				return
			endif
		endif
	endwhile
endfunction

function! IndentEnd()
	call MoveIndent(1, 0, 0)
endfunction

function! IndentStart()
	call MoveIndent(0, 0, 0)
endfunction

function! IndentOuter()
	call MoveIndent(0, 1, 0)
endfunction

function! IndentInner()
	call MoveIndent(1, 0, 1)
endfunction

function! BindIndentAction(key)
	exe ":nnoremap " . a:key . "<M-j> ^mm :call IndentEnd()<CR> :normal " . a:key . "'m<CR>"
	exe ":nnoremap " . a:key . "<M-k> ^mm :call IndentStart()<CR> :normal " . a:key . "'m<CR>"
	exe ":nnoremap " . a:key . "<M-h> :call IndentOuter()<CR> :normal ^mm<CR> :call IndentEnd()<CR> :normal " . a:key . "'m<CR>"
	exe ":nnoremap " . a:key . "<M-l> :normal ^jmmk<CR> :call IndentEnd()<CR> :normal k<CR> :normal " . a:key . "'m<CR>"
endfunction

nnoremap <M-j> :call IndentEnd()<CR>
nnoremap <M-k> :call IndentStart()<CR>
nnoremap <M-h> :call IndentOuter()<CR>
nnoremap <M-l> :call IndentInner()<CR>

call BindIndentAction('d')
call BindIndentAction('y')
call BindIndentAction('<')
call BindIndentAction('>')