tanhauhau · September 26, 2018 04:14
diff --git a/README.md b/README.md
diff --git a/lambda-pure-custom.zsh-theme b/lambda-pure-custom.zsh-theme
 # λ Pure
 # by Michał Nykiel
 # https://github.com/marszall87/lambda-pure
 # MIT License
 #
 # based on Pure by Sindre Sorhus
 # https://github.com/sindresorhus/pure

 # For my own and others sanity
 # git:
 # %b => current branch
 # %a => current action (rebase/merge)
 # prompt:
 # %F => color dict
 # %f => reset color
 # %~ => current path
 # %* => time
 # %n => username
 # %m => shortname host
 # %(?..) => prompt conditional - %(condition.true.false)
 # terminal codes:
 # \e7   => save cursor position
 # \e[2A => move cursor 2 lines up
 # \e[1G => go to position 1 in terminal
 # \e8   => restore cursor position
 # \e[K  => clears everything after the cursor on the current line
 # \e[2K => clear everything on the current line


 # turns seconds into human readable time
 # 165392 => 1d 21h 56m 32s
 # https://github.com/sindresorhus/pretty-time-zsh
 prompt_pure_human_time_to_var() {
 	local human=" " total_seconds=$1 var=$2
 	local days=$(( total_seconds / 60 / 60 / 24 ))
 	local hours=$(( total_seconds / 60 / 60 % 24 ))
 	local minutes=$(( total_seconds / 60 % 60 ))
 	local seconds=$(( total_seconds % 60 ))
 	(( days > 0 )) && human+="${days}d "
 	(( hours > 0 )) && human+="${hours}h "
 	(( minutes > 0 )) && human+="${minutes}m "
 	human+="${seconds}s"

 	# store human readable time in variable as specified by caller
 	typeset -g "${var}"="${human}"
 }

 # stores (into prompt_pure_cmd_exec_time) the exec time of the last command if set threshold was exceeded
 prompt_pure_check_cmd_exec_time() {
 	integer elapsed
 	(( elapsed = EPOCHSECONDS - ${prompt_pure_cmd_timestamp:-$EPOCHSECONDS} ))
 	prompt_pure_cmd_exec_time=
 	(( elapsed > ${PURE_CMD_MAX_EXEC_TIME:=5} )) && {
 		prompt_pure_human_time_to_var $elapsed "prompt_pure_cmd_exec_time"
 	}
 }

 prompt_pure_clear_screen() {
 	# enable output to terminal
 	zle -I
 	# clear screen and move cursor to (0, 0)
 	print -n '\e[2J\e[0;0H'
 	# print preprompt
 	prompt_pure_preprompt_render precmd
 }

 prompt_pure_check_git_arrows() {
 	# reset git arrows
 	prompt_pure_git_arrows=

 	# check if there is an upstream configured for this branch
 	command git rev-parse --abbrev-ref @'{u}' &>/dev/null || return

 	local arrow_status
 	# check git left and right arrow_status
 	arrow_status="$(command git rev-list --left-right --count HEAD...@'{u}' 2>/dev/null)"
 	# exit if the command failed
 	(( !$? )) || return

 	# left and right are tab-separated, split on tab and store as array
 	arrow_status=(${(ps:\t:)arrow_status})
 	local arrows left=${arrow_status[1]} right=${arrow_status[2]}

 	(( ${right:-0} > 0 )) && arrows+="${PURE_GIT_DOWN_ARROW:-▼}"
 	(( ${left:-0} > 0 )) && arrows+="${PURE_GIT_UP_ARROW:-▲}"

 	[[ -n $arrows ]] && prompt_pure_git_arrows=" ${arrows}"
 }

 prompt_pure_set_title() {
 	# emacs terminal does not support settings the title
 	(( ${+EMACS} )) && return

 	# tell the terminal we are setting the title
 	print -n '\e]0;'
 	# show hostname if connected through ssh
 	[[ -n $SSH_CONNECTION ]] && print -Pn '(%m) '
 	case $1 in
 		expand-prompt)
 			print -Pn $2;;
 		ignore-escape)
 			print -rn $2;;
 	esac
 	# end set title
 	print -n '\a'
 }

 prompt_pure_preexec() {
 	# attempt to detect and prevent prompt_pure_async_git_fetch from interfering with user initiated git or hub fetch
 	[[ $2 =~ (git|hub)\ .*(pull|fetch) ]] && async_flush_jobs 'prompt_pure'

 	prompt_pure_cmd_timestamp=$EPOCHSECONDS

 	# shows the current dir and executed command in the title while a process is active
 	prompt_pure_set_title 'ignore-escape' "$PWD:t: $2"
 }

 # string length ignoring ansi escapes
 prompt_pure_string_length_to_var() {
 	local str=$1 var=$2 length
 	# perform expansion on str and check length
 	length=$(( ${#${(S%%)str//(\%([KF1]|)\{*\}|\%[Bbkf])}} ))

 	# store string length in variable as specified by caller
 	typeset -g "${var}"="${length}"
 }

 prompt_pure_preprompt_render() {
 	# store the current prompt_subst setting so that it can be restored later
 	local prompt_subst_status=$options[prompt_subst]

 	# make sure prompt_subst is unset to prevent parameter expansion in preprompt
 	setopt local_options no_prompt_subst

 	# check that no command is currently running, the preprompt will otherwise be rendered in the wrong place
 	[[ -n ${prompt_pure_cmd_timestamp+x} && "$1" != "precmd" ]] && return

 	# set color for git branch/dirty status, change color if dirty checking has been delayed
 	local git_color=242
 	[[ -n ${prompt_pure_git_last_dirty_check_timestamp+x} ]] && git_color=red

 	# construct preprompt, beginning with path
 	local preprompt="%F{blue}%~%f"
 	# git info
 	preprompt+="%F{$git_color}${vcs_info_msg_0_}${prompt_pure_git_dirty}%f"
 	# git pull/push arrows
 	preprompt+="%F{yellow}${prompt_pure_git_arrows}%f"
 	# username and machine if applicable
 	preprompt+=$prompt_pure_username
 	# execution time
 	preprompt+="%F{cyan}${prompt_pure_cmd_exec_time}%f"

 	# NodeJS version
 	local rpreprompt
 	if (( ${PURE_NODE_ENABLED:-1} )); then
 	    rpreprompt+="%F{green}⬢ ${prompt_pure_node_version}%f"
 	fi

 	integer preprompt_left_length preprompt_right_length space_length
 	prompt_pure_string_length_to_var "${preprompt}" "preprompt_left_length"
 	prompt_pure_string_length_to_var "${rpreprompt}" "preprompt_right_length"
 	(( space_length = COLUMNS - preprompt_left_length - preprompt_right_length ))

 	preprompt+="$(printf ' %.0s' {1..${space_length}})"
 	preprompt+=$rpreprompt

 	# make sure prompt_pure_last_preprompt is a global array
 	typeset -g -a prompt_pure_last_preprompt

 	# if executing through precmd, do not perform fancy terminal editing
 	if [[ "$1" == "precmd" ]]; then
 		print -P "\n${preprompt}"
 	else
 		# only redraw if the expanded preprompt has changed
 		[[ "${prompt_pure_last_preprompt[2]}" != "${(S%%)preprompt}" ]] || return

 		# calculate length of preprompt and store it locally in preprompt_length
 		integer preprompt_length lines
 		prompt_pure_string_length_to_var "${preprompt}" "preprompt_length"

 		# calculate number of preprompt lines for redraw purposes
 		(( lines = ( preprompt_length - 1 ) / COLUMNS + 1 ))

 		# calculate previous preprompt lines to figure out how the new preprompt should behave
 		integer last_preprompt_length last_lines
 		prompt_pure_string_length_to_var "${prompt_pure_last_preprompt[1]}" "last_preprompt_length"
 		(( last_lines = ( last_preprompt_length - 1 ) / COLUMNS + 1 ))

 		# clr_prev_preprompt erases visual artifacts from previous preprompt
 		local clr_prev_preprompt
 		if (( last_lines > lines )); then
 			# move cursor up by last_lines, clear the line and move it down by one line
 			clr_prev_preprompt="\e[${last_lines}A\e[2K\e[1B"
 			while (( last_lines - lines > 1 )); do
 				# clear the line and move cursor down by one
 				clr_prev_preprompt+='\e[2K\e[1B'
 				(( last_lines-- ))
 			done

 			# move cursor into correct position for preprompt update
 			clr_prev_preprompt+="\e[${lines}B"
 		# create more space for preprompt if new preprompt has more lines than last
 		elif (( last_lines < lines )); then
 			# move cursor using newlines because ansi cursor movement can't push the cursor beyond the last line
 			printf $'\n'%.0s {1..$(( lines - last_lines ))}
 		fi

 		# disable clearing of line if last char of preprompt is last column of terminal
 		local clr='\e[K'
 		(( COLUMNS * lines == preprompt_length )) && clr=

 		# modify previous preprompt
 		print -Pn "${clr_prev_preprompt}\e[${lines}A\e[${COLUMNS}D${preprompt}${clr}\n"

 		if [[ $prompt_subst_status = 'on' ]]; then
 			# re-eanble prompt_subst for expansion on PS1
 			setopt prompt_subst
 		fi

 		# redraw prompt (also resets cursor position)
 		zle && zle .reset-prompt
 	fi

 	# store both unexpanded and expanded preprompt for comparison
 	prompt_pure_last_preprompt=("$preprompt" "${(S%%)preprompt}")
 }

 prompt_pure_precmd() {
 	# check exec time and store it in a variable
 	prompt_pure_check_cmd_exec_time

 	# by making sure that prompt_pure_cmd_timestamp is defined here the async functions are prevented from interfering
 	# with the initial preprompt rendering
 	prompt_pure_cmd_timestamp=

 	# check for git arrows
 	prompt_pure_check_git_arrows

 	# shows the full path in the title
 	prompt_pure_set_title 'expand-prompt' '%~'

 	# get vcs info
 	vcs_info

 	# preform async git dirty check and fetch
 	prompt_pure_async_tasks

 	# print the preprompt
 	prompt_pure_preprompt_render "precmd"

 	# remove the prompt_pure_cmd_timestamp, indicating that precmd has completed
 	unset prompt_pure_cmd_timestamp
 }

 # fastest possible way to check if repo is dirty
 prompt_pure_async_git_dirty() {
 	local untracked_dirty=$1; shift

 	# use cd -q to avoid side effects of changing directory, e.g. chpwd hooks
 	builtin cd -q "$*"

 	if [[ "$untracked_dirty" == "0" ]]; then
 		command git diff --no-ext-diff --quiet --exit-code
 	else
 		test -z "$(command git status --porcelain --ignore-submodules -unormal)"
 	fi

 	(( $? )) && echo " %F{red}${PURE_GIT_DIRTY:-×}%f"
 }

 prompt_pure_async_git_fetch() {
 	# use cd -q to avoid side effects of changing directory, e.g. chpwd hooks
 	builtin cd -q "$*"

 	# set GIT_TERMINAL_PROMPT=0 to disable auth prompting for git fetch (git 2.3+)
 	GIT_TERMINAL_PROMPT=0 command git -c gc.auto=0 fetch
 }

 prompt_pure_async_node() {
 	echo "$(PATH=$1 command node -v | cut -c2- )"
 }

 prompt_pure_async_tasks() {
 	# initialize async worker
 	((!${prompt_pure_async_init:-0})) && {
 		async_start_worker "prompt_pure" -u -n
 		async_register_callback "prompt_pure" prompt_pure_async_callback
 		prompt_pure_async_init=1
 	}

 	# store working_tree without the "x" prefix
 	local working_tree="${vcs_info_msg_1_#x}"

 	# check if the working tree changed (prompt_pure_current_working_tree is prefixed by "x")
 	if [[ ${prompt_pure_current_working_tree#x} != $working_tree ]]; then
 		# stop any running async jobs
 		async_flush_jobs "prompt_pure"

 		# reset git preprompt variables, switching working tree
 		unset prompt_pure_git_dirty
 		unset prompt_pure_git_last_dirty_check_timestamp

 		# set the new working tree and prefix with "x" to prevent the creation of a named path by AUTO_NAME_DIRS
 		prompt_pure_current_working_tree="x${working_tree}"
 	fi

 	async_job "prompt_pure" prompt_pure_async_node "$PATH"

 	# only perform tasks inside git working tree
 	[[ -n $working_tree ]] || return

 	# do not preform git fetch if it is disabled or working_tree == HOME
 	if (( ${PURE_GIT_PULL:-1} )) && [[ $working_tree != $HOME ]]; then
 		# tell worker to do a git fetch
 		async_job "prompt_pure" prompt_pure_async_git_fetch "${working_tree}"
 	fi

 	# if dirty checking is sufficiently fast, tell worker to check it again, or wait for timeout
 	integer time_since_last_dirty_check=$(( EPOCHSECONDS - ${prompt_pure_git_last_dirty_check_timestamp:-0} ))
 	if (( time_since_last_dirty_check > ${PURE_GIT_DELAY_DIRTY_CHECK:-1800} )); then
 		unset prompt_pure_git_last_dirty_check_timestamp
 		# check check if there is anything to pull
 		async_job "prompt_pure" prompt_pure_async_git_dirty "${PURE_GIT_UNTRACKED_DIRTY:-1}" "${working_tree}"
 	fi

 }

 prompt_pure_async_callback() {
 	local job=$1
 	local output=$3
 	local exec_time=$4

 	case "${job}" in
 		prompt_pure_async_git_dirty)
 			prompt_pure_git_dirty=$output
 			prompt_pure_preprompt_render

 			# When prompt_pure_git_last_dirty_check_timestamp is set, the git info is displayed in a different color.
 			# To distinguish between a "fresh" and a "cached" result, the preprompt is rendered before setting this
 			# variable. Thus, only upon next rendering of the preprompt will the result appear in a different color.
 			(( $exec_time > 2 )) && prompt_pure_git_last_dirty_check_timestamp=$EPOCHSECONDS
 			;;
 		prompt_pure_async_git_fetch)
 			prompt_pure_check_git_arrows
 			prompt_pure_preprompt_render
 			;;
 		prompt_pure_async_node)
 			prompt_pure_node_version=$output
 			prompt_pure_preprompt_render
 			;;
 	esac
 }

 prompt_pure_setup() {
 	# prevent percentage showing up
 	# if output doesn't end with a newline
 	export PROMPT_EOL_MARK=''

 	prompt_opts=(subst percent)

 	zmodload zsh/datetime
 	zmodload zsh/zle
 	zmodload zsh/parameter

 	autoload -Uz add-zsh-hook
 	autoload -Uz vcs_info
 	autoload -Uz async && async

 	add-zsh-hook precmd prompt_pure_precmd
 	add-zsh-hook preexec prompt_pure_preexec

 	zstyle ':vcs_info:*' enable git
 	zstyle ':vcs_info:*' use-simple true
 	# only export two msg variables from vcs_info
 	zstyle ':vcs_info:*' max-exports 2
 	# vcs_info_msg_0_ = ' %b' (for branch)
 	# vcs_info_msg_1_ = 'x%R' git top level (%R), x-prefix prevents creation of a named path (AUTO_NAME_DIRS)
 	zstyle ':vcs_info:git*' formats ' %b' 'x%R'
 	zstyle ':vcs_info:git*' actionformats ' %b|%a' 'x%R'

 	# if the user has not registered a custom zle widget for clear-screen,
 	# override the builtin one so that the preprompt is displayed correctly when
 	# ^L is issued.
 	if [[ $widgets[clear-screen] == 'builtin' ]]; then
 		zle -N clear-screen prompt_pure_clear_screen
 	fi

 	# show username@host if logged in through SSH
 	[[ "$SSH_CONNECTION" != '' ]] && prompt_pure_username=' %F{242}%n@%m%f'

 	# show username@host if root, with username in white
 	[[ $UID -eq 0 ]] && prompt_pure_username=' %F{white}%n%f%F{242}@%m%f'

 	# prompt turns red if the previous command didn't exit with 0
  TIME_BASED_PROMPT_SYMBOL="${PURE_PROMPT_SYMBOL:-λ}"
  HOUR_OF_THE_DAY=$(date +"%H")

  if [[ HOUR_OF_THE_DAY -eq "12" || HOUR_OF_THE_DAY -eq "13" ]]; then
    # lunch 
    TIME_BASED_PROMPT_SYMBOL="🍚"
  elif [[ HOUR_OF_THE_DAY -eq "17" || HOUR_OF_THE_DAY -eq "18" ]]; then
    # tea break
    TIME_BASED_PROMPT_SYMBOL="☕️"
  elif [[ HOUR_OF_THE_DAY -eq "19" ]]; then
    # dinner
    TIME_BASED_PROMPT_SYMBOL="🍲"
  elif [[ HOUR_OF_THE_DAY -gt "20" || HOUR_OF_THE_DAY -lt "7" ]]; then
    # night
    TIME_BASED_PROMPT_SYMBOL="😴"
  fi

 	PROMPT="%(?.%F{yellow}.%F{red})${TIME_BASED_PROMPT_SYMBOL} %f "
 }

 prompt_pure_setup "$@"
	# λ Pure
	# by Michał Nykiel
	# https://github.com/marszall87/lambda-pure
	# MIT License
	#
	# based on Pure by Sindre Sorhus
	# https://github.com/sindresorhus/pure

	# For my own and others sanity
	# git:
	# %b => current branch
	# %a => current action (rebase/merge)
	# prompt:
	# %F => color dict
	# %f => reset color
	# %~ => current path
	# %* => time
	# %n => username
	# %m => shortname host
	# %(?..) => prompt conditional - %(condition.true.false)
	# terminal codes:
	# \e7 => save cursor position
	# \e[2A => move cursor 2 lines up
	# \e[1G => go to position 1 in terminal
	# \e8 => restore cursor position
	# \e[K => clears everything after the cursor on the current line
	# \e[2K => clear everything on the current line


	# turns seconds into human readable time
	# 165392 => 1d 21h 56m 32s
	# https://github.com/sindresorhus/pretty-time-zsh
	prompt_pure_human_time_to_var() {
	local human=" " total_seconds=$1 var=$2
	local days=$(( total_seconds / 60 / 60 / 24 ))
	local hours=$(( total_seconds / 60 / 60 % 24 ))
	local minutes=$(( total_seconds / 60 % 60 ))
	local seconds=$(( total_seconds % 60 ))
	(( days > 0 )) && human+="${days}d "
	(( hours > 0 )) && human+="${hours}h "
	(( minutes > 0 )) && human+="${minutes}m "
	human+="${seconds}s"

	# store human readable time in variable as specified by caller
	typeset -g "${var}"="${human}"
	}

	# stores (into prompt_pure_cmd_exec_time) the exec time of the last command if set threshold was exceeded
	prompt_pure_check_cmd_exec_time() {
	integer elapsed
	(( elapsed = EPOCHSECONDS - ${prompt_pure_cmd_timestamp:-$EPOCHSECONDS} ))
	prompt_pure_cmd_exec_time=
	(( elapsed > ${PURE_CMD_MAX_EXEC_TIME:=5} )) && {
	prompt_pure_human_time_to_var $elapsed "prompt_pure_cmd_exec_time"
	}
	}

	prompt_pure_clear_screen() {
	# enable output to terminal
	zle -I
	# clear screen and move cursor to (0, 0)
	print -n '\e[2J\e[0;0H'
	# print preprompt
	prompt_pure_preprompt_render precmd
	}

	prompt_pure_check_git_arrows() {
	# reset git arrows
	prompt_pure_git_arrows=

	# check if there is an upstream configured for this branch
	command git rev-parse --abbrev-ref @'{u}' &>/dev/null \|\| return

	local arrow_status
	# check git left and right arrow_status
	arrow_status="$(command git rev-list --left-right --count HEAD...@'{u}' 2>/dev/null)"
	# exit if the command failed
	(( !$? )) \|\| return

	# left and right are tab-separated, split on tab and store as array
	arrow_status=(${(ps:\t:)arrow_status})
	local arrows left=${arrow_status[1]} right=${arrow_status[2]}

	(( ${right:-0} > 0 )) && arrows+="${PURE_GIT_DOWN_ARROW:-▼}"
	(( ${left:-0} > 0 )) && arrows+="${PURE_GIT_UP_ARROW:-▲}"

	[[ -n $arrows ]] && prompt_pure_git_arrows=" ${arrows}"
	}

	prompt_pure_set_title() {
	# emacs terminal does not support settings the title
	(( ${+EMACS} )) && return

	# tell the terminal we are setting the title
	print -n '\e]0;'
	# show hostname if connected through ssh
	[[ -n $SSH_CONNECTION ]] && print -Pn '(%m) '
	case $1 in
	expand-prompt)
	print -Pn $2;;
	ignore-escape)
	print -rn $2;;
	esac
	# end set title
	print -n '\a'
	}

	prompt_pure_preexec() {
	# attempt to detect and prevent prompt_pure_async_git_fetch from interfering with user initiated git or hub fetch
	[[ $2 =~ (git\|hub)\ .*(pull\|fetch) ]] && async_flush_jobs 'prompt_pure'

	prompt_pure_cmd_timestamp=$EPOCHSECONDS

	# shows the current dir and executed command in the title while a process is active
	prompt_pure_set_title 'ignore-escape' "$PWD:t: $2"
	}

	# string length ignoring ansi escapes
	prompt_pure_string_length_to_var() {
	local str=$1 var=$2 length
	# perform expansion on str and check length
	length=$(( ${#${(S%%)str//(\%([KF1]\|)\{*\}\|\%[Bbkf])}} ))

	# store string length in variable as specified by caller
	typeset -g "${var}"="${length}"
	}

	prompt_pure_preprompt_render() {
	# store the current prompt_subst setting so that it can be restored later
	local prompt_subst_status=$options[prompt_subst]

	# make sure prompt_subst is unset to prevent parameter expansion in preprompt
	setopt local_options no_prompt_subst

	# check that no command is currently running, the preprompt will otherwise be rendered in the wrong place
	[[ -n ${prompt_pure_cmd_timestamp+x} && "$1" != "precmd" ]] && return

	# set color for git branch/dirty status, change color if dirty checking has been delayed
	local git_color=242
	[[ -n ${prompt_pure_git_last_dirty_check_timestamp+x} ]] && git_color=red

	# construct preprompt, beginning with path
	local preprompt="%F{blue}%~%f"
	# git info
	preprompt+="%F{$git_color}${vcs_info_msg_0_}${prompt_pure_git_dirty}%f"
	# git pull/push arrows
	preprompt+="%F{yellow}${prompt_pure_git_arrows}%f"
	# username and machine if applicable
	preprompt+=$prompt_pure_username
	# execution time
	preprompt+="%F{cyan}${prompt_pure_cmd_exec_time}%f"

	# NodeJS version
	local rpreprompt
	if (( ${PURE_NODE_ENABLED:-1} )); then
	rpreprompt+="%F{green}⬢ ${prompt_pure_node_version}%f"
	fi

	integer preprompt_left_length preprompt_right_length space_length
	prompt_pure_string_length_to_var "${preprompt}" "preprompt_left_length"
	prompt_pure_string_length_to_var "${rpreprompt}" "preprompt_right_length"
	(( space_length = COLUMNS - preprompt_left_length - preprompt_right_length ))

	preprompt+="$(printf ' %.0s' {1..${space_length}})"
	preprompt+=$rpreprompt

	# make sure prompt_pure_last_preprompt is a global array
	typeset -g -a prompt_pure_last_preprompt

	# if executing through precmd, do not perform fancy terminal editing
	if [[ "$1" == "precmd" ]]; then
	print -P "\n${preprompt}"
	else
	# only redraw if the expanded preprompt has changed
	[[ "${prompt_pure_last_preprompt[2]}" != "${(S%%)preprompt}" ]] \|\| return

	# calculate length of preprompt and store it locally in preprompt_length
	integer preprompt_length lines
	prompt_pure_string_length_to_var "${preprompt}" "preprompt_length"

	# calculate number of preprompt lines for redraw purposes
	(( lines = ( preprompt_length - 1 ) / COLUMNS + 1 ))

	# calculate previous preprompt lines to figure out how the new preprompt should behave
	integer last_preprompt_length last_lines
	prompt_pure_string_length_to_var "${prompt_pure_last_preprompt[1]}" "last_preprompt_length"
	(( last_lines = ( last_preprompt_length - 1 ) / COLUMNS + 1 ))

	# clr_prev_preprompt erases visual artifacts from previous preprompt
	local clr_prev_preprompt
	if (( last_lines > lines )); then
	# move cursor up by last_lines, clear the line and move it down by one line
	clr_prev_preprompt="\e[${last_lines}A\e[2K\e[1B"
	while (( last_lines - lines > 1 )); do
	# clear the line and move cursor down by one
	clr_prev_preprompt+='\e[2K\e[1B'
	(( last_lines-- ))
	done

	# move cursor into correct position for preprompt update
	clr_prev_preprompt+="\e[${lines}B"
	# create more space for preprompt if new preprompt has more lines than last
	elif (( last_lines < lines )); then
	# move cursor using newlines because ansi cursor movement can't push the cursor beyond the last line
	printf $'\n'%.0s {1..$(( lines - last_lines ))}
	fi

	# disable clearing of line if last char of preprompt is last column of terminal
	local clr='\e[K'
	(( COLUMNS * lines == preprompt_length )) && clr=

	# modify previous preprompt
	print -Pn "${clr_prev_preprompt}\e[${lines}A\e[${COLUMNS}D${preprompt}${clr}\n"

	if [[ $prompt_subst_status = 'on' ]]; then
	# re-eanble prompt_subst for expansion on PS1
	setopt prompt_subst
	fi

	# redraw prompt (also resets cursor position)
	zle && zle .reset-prompt
	fi

	# store both unexpanded and expanded preprompt for comparison
	prompt_pure_last_preprompt=("$preprompt" "${(S%%)preprompt}")
	}

	prompt_pure_precmd() {
	# check exec time and store it in a variable
	prompt_pure_check_cmd_exec_time

	# by making sure that prompt_pure_cmd_timestamp is defined here the async functions are prevented from interfering
	# with the initial preprompt rendering
	prompt_pure_cmd_timestamp=

	# check for git arrows
	prompt_pure_check_git_arrows

	# shows the full path in the title
	prompt_pure_set_title 'expand-prompt' '%~'

	# get vcs info
	vcs_info

	# preform async git dirty check and fetch
	prompt_pure_async_tasks

	# print the preprompt
	prompt_pure_preprompt_render "precmd"

	# remove the prompt_pure_cmd_timestamp, indicating that precmd has completed
	unset prompt_pure_cmd_timestamp
	}

	# fastest possible way to check if repo is dirty
	prompt_pure_async_git_dirty() {
	local untracked_dirty=$1; shift

	# use cd -q to avoid side effects of changing directory, e.g. chpwd hooks
	builtin cd -q "$*"

	if [[ "$untracked_dirty" == "0" ]]; then
	command git diff --no-ext-diff --quiet --exit-code
	else
	test -z "$(command git status --porcelain --ignore-submodules -unormal)"
	fi

	(( $? )) && echo " %F{red}${PURE_GIT_DIRTY:-×}%f"
	}

	prompt_pure_async_git_fetch() {
	# use cd -q to avoid side effects of changing directory, e.g. chpwd hooks
	builtin cd -q "$*"

	# set GIT_TERMINAL_PROMPT=0 to disable auth prompting for git fetch (git 2.3+)
	GIT_TERMINAL_PROMPT=0 command git -c gc.auto=0 fetch
	}

	prompt_pure_async_node() {
	echo "$(PATH=$1 command node -v \| cut -c2- )"
	}

	prompt_pure_async_tasks() {
	# initialize async worker
	((!${prompt_pure_async_init:-0})) && {
	async_start_worker "prompt_pure" -u -n
	async_register_callback "prompt_pure" prompt_pure_async_callback
	prompt_pure_async_init=1
	}

	# store working_tree without the "x" prefix
	local working_tree="${vcs_info_msg_1_#x}"

	# check if the working tree changed (prompt_pure_current_working_tree is prefixed by "x")
	if [[ ${prompt_pure_current_working_tree#x} != $working_tree ]]; then
	# stop any running async jobs
	async_flush_jobs "prompt_pure"

	# reset git preprompt variables, switching working tree
	unset prompt_pure_git_dirty
	unset prompt_pure_git_last_dirty_check_timestamp

	# set the new working tree and prefix with "x" to prevent the creation of a named path by AUTO_NAME_DIRS
	prompt_pure_current_working_tree="x${working_tree}"
	fi

	async_job "prompt_pure" prompt_pure_async_node "$PATH"

	# only perform tasks inside git working tree
	[[ -n $working_tree ]] \|\| return

	# do not preform git fetch if it is disabled or working_tree == HOME
	if (( ${PURE_GIT_PULL:-1} )) && [[ $working_tree != $HOME ]]; then
	# tell worker to do a git fetch
	async_job "prompt_pure" prompt_pure_async_git_fetch "${working_tree}"
	fi

	# if dirty checking is sufficiently fast, tell worker to check it again, or wait for timeout
	integer time_since_last_dirty_check=$(( EPOCHSECONDS - ${prompt_pure_git_last_dirty_check_timestamp:-0} ))
	if (( time_since_last_dirty_check > ${PURE_GIT_DELAY_DIRTY_CHECK:-1800} )); then
	unset prompt_pure_git_last_dirty_check_timestamp
	# check check if there is anything to pull
	async_job "prompt_pure" prompt_pure_async_git_dirty "${PURE_GIT_UNTRACKED_DIRTY:-1}" "${working_tree}"
	fi

	}

	prompt_pure_async_callback() {
	local job=$1
	local output=$3
	local exec_time=$4

	case "${job}" in
	prompt_pure_async_git_dirty)
	prompt_pure_git_dirty=$output
	prompt_pure_preprompt_render

	# When prompt_pure_git_last_dirty_check_timestamp is set, the git info is displayed in a different color.
	# To distinguish between a "fresh" and a "cached" result, the preprompt is rendered before setting this
	# variable. Thus, only upon next rendering of the preprompt will the result appear in a different color.
	(( $exec_time > 2 )) && prompt_pure_git_last_dirty_check_timestamp=$EPOCHSECONDS
	;;
	prompt_pure_async_git_fetch)
	prompt_pure_check_git_arrows
	prompt_pure_preprompt_render
	;;
	prompt_pure_async_node)
	prompt_pure_node_version=$output
	prompt_pure_preprompt_render
	;;
	esac
	}

	prompt_pure_setup() {
	# prevent percentage showing up
	# if output doesn't end with a newline
	export PROMPT_EOL_MARK=''

	prompt_opts=(subst percent)

	zmodload zsh/datetime
	zmodload zsh/zle
	zmodload zsh/parameter

	autoload -Uz add-zsh-hook
	autoload -Uz vcs_info
	autoload -Uz async && async

	add-zsh-hook precmd prompt_pure_precmd
	add-zsh-hook preexec prompt_pure_preexec

	zstyle ':vcs_info:*' enable git
	zstyle ':vcs_info:*' use-simple true
	# only export two msg variables from vcs_info
	zstyle ':vcs_info:*' max-exports 2
	# vcs_info_msg_0_ = ' %b' (for branch)
	# vcs_info_msg_1_ = 'x%R' git top level (%R), x-prefix prevents creation of a named path (AUTO_NAME_DIRS)
	zstyle ':vcs_info:git*' formats ' %b' 'x%R'
	zstyle ':vcs_info:git*' actionformats ' %b\|%a' 'x%R'

	# if the user has not registered a custom zle widget for clear-screen,
	# override the builtin one so that the preprompt is displayed correctly when
	# ^L is issued.
	if [[ $widgets[clear-screen] == 'builtin' ]]; then
	zle -N clear-screen prompt_pure_clear_screen
	fi

	# show username@host if logged in through SSH
	[[ "$SSH_CONNECTION" != '' ]] && prompt_pure_username=' %F{242}%n@%m%f'

	# show username@host if root, with username in white
	[[ $UID -eq 0 ]] && prompt_pure_username=' %F{white}%n%f%F{242}@%m%f'

	# prompt turns red if the previous command didn't exit with 0
	TIME_BASED_PROMPT_SYMBOL="${PURE_PROMPT_SYMBOL:-λ}"
	HOUR_OF_THE_DAY=$(date +"%H")

	if [[ HOUR_OF_THE_DAY -eq "12" \|\| HOUR_OF_THE_DAY -eq "13" ]]; then
	# lunch
	TIME_BASED_PROMPT_SYMBOL="🍚"
	elif [[ HOUR_OF_THE_DAY -eq "17" \|\| HOUR_OF_THE_DAY -eq "18" ]]; then
	# tea break
	TIME_BASED_PROMPT_SYMBOL="☕️"
	elif [[ HOUR_OF_THE_DAY -eq "19" ]]; then
	# dinner
	TIME_BASED_PROMPT_SYMBOL="🍲"
	elif [[ HOUR_OF_THE_DAY -gt "20" \|\| HOUR_OF_THE_DAY -lt "7" ]]; then
	# night
	TIME_BASED_PROMPT_SYMBOL="😴"
	fi

	PROMPT="%(?.%F{yellow}.%F{red})${TIME_BASED_PROMPT_SYMBOL} %f "
	}

	prompt_pure_setup "$@"