diff --git a/.README.md b/.README.md
index b5c82b1..976217e 100644
--- a/.README.md
+++ b/.README.md
@@ -497,6 +497,7 @@ Command|Description
 Command|Description
 ---|---
 `find_ext`|Find all file extensions recursively.
+`find_function`|Find all dotfiles functions.
 
 ## Fix.
 
@@ -536,6 +537,13 @@ Command|Description
 `gg <REPO>`|Get git repo from my own git.
 `ggc`|Run git garbage collection.
 
+## Help.
+
+Command|Description
+---|---
+`help <FUNCTION>`|Get help for a dotfile function.
+`h <FUNCTION>`|Same as `help`.
+
 ## Ls.
 
 Command|Description
diff --git a/.bashrc b/.bashrc
index 7805ef2..f3ac851 100644
--- a/.bashrc
+++ b/.bashrc
@@ -1,21 +1,18 @@
-#!/bin/bash
-
 # If not running interactively, don't do anything.
 [[ "$-" != *i* ]] && return
 
-#home="/var/home/voronind"
-home="${HOME}"
-module="${home}/.config/bash/module/*.sh"
+# Src system bashrc.
+[[ -f /etc/bashrc ]] && source /etc/bashrc
 
-# src default
-if [[ -f /etc/bashrc ]]; then
-	source /etc/bashrc
-fi
-
-# src custom
-for file in ${module}; do
-	source "${file}"
+# Src custom modules.
+for module in ${HOME}/.config/bash/module/*.sh; do
+	source "${module}"
 done
 
-# alias to reload
-alias bashrc="source ~/.bashrc"
+# Alias to reload.
+function bashrc() {
+	source ~/.bashrc
+}
+
+# Export all functions.
+export -f $(find_functions | tr '\n' ' ')
diff --git a/.config/bash/module/android.sh b/.config/bash/module/android.sh
index 29b9d1a..435f332 100644
--- a/.config/bash/module/android.sh
+++ b/.config/bash/module/android.sh
@@ -1,3 +1,3 @@
-emulator() {
+function emulator() {
 	${ANDROID_SDK_ROOT}/emulator/emulator -avd default &> /dev/null & disown
 }
diff --git a/.config/bash/module/archive.sh b/.config/bash/module/archive.sh
index 79be19b..926a899 100644
--- a/.config/bash/module/archive.sh
+++ b/.config/bash/module/archive.sh
@@ -1,11 +1,12 @@
-_ARCHIVE_PATTERN="_[0-9]{12}-[[:alnum:]]{40}.t[xg]z"
-_ARCHIVE_DATE() {
+export _ARCHIVE_PATTERN="_[0-9]{12}-[[:alnum:]]{40}.t[xg]z"
+
+function _ARCHIVE_DATE() {
 	date +%Y%m%d%H%M
 }
 
 # archive file with maximum compression and checksum.
 # usage: archive [FILES]
-archive() {
+function archive() {
 	local IFS=$'\n'
 	local targets=("${@}")
 	local count=0
@@ -52,7 +53,7 @@ archive() {
 
 # archive file with minimal compression and checksum.
 # usage: archive_fast [FILES]
-archive_fast() {
+function archive_fast() {
 	local IFS=$'\n'
 	local targets=("${@}")
 	local count=0
@@ -99,7 +100,7 @@ archive_fast() {
 
 # check archive hashes.
 # usage: archive_check [FILES]
-archive_check() {
+function archive_check() {
 	local IFS=$'\n'
 	local targets=("${@}")
 	local total=${#}
@@ -143,7 +144,7 @@ archive_check() {
 
 # Delete old versions of an archives.
 # Usage: archive_prune [NAME]
-archive_prune() {
+function archive_prune() {
 	local IFS=$'\n'
 	local targets=("${@}")
 	local count=0
@@ -194,7 +195,7 @@ archive_prune() {
 
 # extract previously created archive with checksum validation.
 # usage: unarchive [FILES]
-unarchive() {
+function unarchive() {
 	local IFS=$'\n'
 	local targets=("${@}")
 	local count=0
@@ -260,7 +261,7 @@ unarchive() {
 
 # rename archive. if no name specified, it simplifies archive's name.
 # usage: archive_name [ARCHIVE] [NAME]
-archive_name() {
+function archive_name() {
 	local IFS=$'\n'
 	local targets="${1}"
 	local name="${2}"
@@ -323,7 +324,7 @@ archive_name() {
 }
 
 # convert an old archive to a new format. TODO: remove me after some time when there won't be any old archives.
-archive_convert() {
+function archive_convert() {
 	local IFS=$'\n'
 	local old_format="_[[:alnum:]]{40}.tar.[xg]z"
 	local targets=($(ls | grep -E ${old_format}))
@@ -365,7 +366,7 @@ archive_convert() {
 	done
 }
 
-_archive_parse() {
+function _archive_parse() {
 	local input="${1}"
 	local name="${input%_*}"
 	local format="${input##*.}"
@@ -379,12 +380,7 @@ _archive_parse() {
 	echo "${format}"
 }
 
-# export everything, primarily for use with parallel..
-export -f archive archive_fast archive_check unarchive archive_name _ARCHIVE_DATE
-export _ARCHIVE_PATTERN
-
-# autocomplete.
-_archive_name() {
+function _archive_name() {
 	local IFS=$'\n'
 	COMPREPLY=()
 
@@ -402,7 +398,7 @@ _archive_name() {
 	fi
 }
 
-_archive_grep() {
+function _archive_grep() {
 	_autocomplete_grep ${_ARCHIVE_PATTERN}
 }
 
diff --git a/.config/bash/module/autocomplete.sh b/.config/bash/module/autocomplete.sh
index 08805af..47b7f85 100644
--- a/.config/bash/module/autocomplete.sh
+++ b/.config/bash/module/autocomplete.sh
@@ -1,7 +1,7 @@
 # bash autocomplete.
 # usage: _foo() { _autocomplete "{foo,bar}" } ; complete -F _foo foo
 # there are also options like -o nospace. see man for more info.
-_autocomplete() {
+function _autocomplete() {
 	local IFS=$'\n'
 	local commands="${*}"
 	
@@ -16,7 +16,7 @@ _autocomplete() {
 }
 
 # autocomplete only first argument.
-_autocomplete_first() {
+function _autocomplete_first() {
 	local IFS=$'\n'
 	local commands="${*}"
 
@@ -33,7 +33,7 @@ _autocomplete_first() {
 }
 
 # Autocomplete by grepping file names.
-_autocomplete_grep() {
+function _autocomplete_grep() {
 	local IFS=$'\n'
 	COMPREPLY=()
 
@@ -47,7 +47,7 @@ _autocomplete_grep() {
 }
 
 # autocomplete nested program.
-_autocomplete_nested() {
+function _autocomplete_nested() {
 	# local IFS=$'\n'
 	local cur prev words cword split i
 	_init_completion -s || return
diff --git a/.config/bash/module/battery.sh b/.config/bash/module/battery.sh
index 30985ab..ebccd30 100644
--- a/.config/bash/module/battery.sh
+++ b/.config/bash/module/battery.sh
@@ -1,4 +1,4 @@
 # check battery level.
-battery_level() {
+function battery_level() {
 	cat /sys/class/power_supply/BAT*/capacity
 }
diff --git a/.config/bash/module/bootstrap.sh b/.config/bash/module/bootstrap.sh
index 25a1b01..721a1f2 100644
--- a/.config/bash/module/bootstrap.sh
+++ b/.config/bash/module/bootstrap.sh
@@ -1,11 +1,11 @@
 # install Cargo/Rust.
-bootstrap_rust() {
+function bootstrap_rust() {
 	curl https://sh.rustup.rs -sSf | sh 
 	rustup component add rust-analyzer
 }
 
 # install TeXLive.
-bootstrap_texlive() {
+function bootstrap_texlive() {
 	cd /tmp
 	wget https://mirror.ctan.org/systems/texlive/tlnet/install-tl-unx.tar.gz
 	tar -xf install-tl-unx.tar.gz
@@ -15,13 +15,13 @@ bootstrap_texlive() {
 }
 
 # install grub theme.
-bootstrap_grub() {
+function bootstrap_grub() {
 	wget -O- https://github.com/shvchk/fallout-grub-theme/raw/master/install.sh | bash
 	echo 'GRUB_HIDDEN_TIMEOUT=' >> /etc/default/grub
 	grub2-mkconfig -o /etc/grub2.cfg
 }
 
 # install ffmpeg.
-bootstrap_ffmpeg() {
+function bootstrap_ffmpeg() {
 	flatpak install org.kde.kdenlive
 }
diff --git a/.config/bash/module/cd.sh b/.config/bash/module/cd.sh
index 091160e..63b8fab 100644
--- a/.config/bash/module/cd.sh
+++ b/.config/bash/module/cd.sh
@@ -1,6 +1,6 @@
 # CD (back) to directory.
 # Usage: cdd <DIR>
-cdd() {
+function cdd() {
 	local target="${1}"
 	local array
 	local result
diff --git a/.config/bash/module/checksum.sh b/.config/bash/module/checksum.sh
index 24fa8a3..00054a7 100644
--- a/.config/bash/module/checksum.sh
+++ b/.config/bash/module/checksum.sh
@@ -1,6 +1,6 @@
 # Save file checksums.
 # Usage: checksum_create [FILES]
-checksum_create() {
+function checksum_create() {
 	local IFS=$'\n'
 	local targets=("${@}")
 	local count=0
@@ -46,7 +46,7 @@ checksum_create() {
 }
 
 # Check stored values against actual files.
-checksum_check() {
+function checksum_check() {
 	local IFS=$'\n'
 	local targets=("${@}")
 	local count=0
@@ -95,17 +95,17 @@ checksum_check() {
 	fi
 }
 
-checksum() {
+function checksum() {
 	find -type f | parallel -j $(_core_count) -- sha1sum {} >> checksum.sha1
 }
 
-_checksum_create() {
+function _checksum_create() {
 	local path="${1%/*}"
 	local name="${1##*/}"
 	sha1sum "${path}/${name}" > "${path}/.${name}.sha1"
 }
 
-_checksum_check() {
+function _checksum_check() {
 	local file="${1##*\ \ }"
 	local stored="${1%%\ \ *}"
 
@@ -124,6 +124,3 @@ _checksum_check() {
 
 	return 0
 }
-
-export -f checksum_create checksum_check
-export -f _checksum_check _checksum_create
diff --git a/.config/bash/module/chmod.sh b/.config/bash/module/chmod.sh
index e5b9419..85b5b9b 100644
--- a/.config/bash/module/chmod.sh
+++ b/.config/bash/module/chmod.sh
@@ -1,4 +1,4 @@
 # add executable flag to file.
-x() {
+function x() {
 	chmod +x "${@}"
 }
diff --git a/.config/bash/module/color.sh b/.config/bash/module/color.sh
index 53d3c39..f83c0b3 100644
--- a/.config/bash/module/color.sh
+++ b/.config/bash/module/color.sh
@@ -19,6 +19,6 @@ export color_yellow="\033[0;33m"
 export color_byellow="\033[1;33m"
 
 # print all available colors with their names colored in corresponding color.
-color_test() {
+function color_test() {
 	echo -e "${color_default}color_default\n${color_blue}color_blue\n${color_bblue}color_bblue\n${color_cyan}color_cyan\n${color_bcyan}color_bcyan\n${color_green}color_green\n${color_bgreen}color_bgreen\n${color_purple}color_purple\n${color_bpurple}color_bpurple\n${color_red}color_red\n${color_bred}color_bred\n${color_white}color_white\n${color_bwhite}color_bwhite\n${color_yellow}color_yellow\n${color_byellow}color_byellow"
 }
diff --git a/.config/bash/module/cp.sh b/.config/bash/module/cp.sh
index 195e7bd..25a17b1 100644
--- a/.config/bash/module/cp.sh
+++ b/.config/bash/module/cp.sh
@@ -1,24 +1,24 @@
 # replace default cp with rsync.
-cp() {
+function cp() {
 	rsync -ahP --chmod=u+w -- "${@}"
 }
 
 # copy and also merge all changes (delete dst files that do not exist in src).
-cp_merge() {
+function cp_merge() {
 	rsync -ahP --chmod=u+w --delete -- "${@}"
 }
 
 # copy by creating hardlinks.
-cp_link() {
+function cp_link() {
 	/usr/bin/cp -lr -- "${@}"
 }
 
 # default cp, a.k.a builtin cp.
-bcp() {
+function bcp() {
 	/usr/bin/cp "${@}"
 }
 
 # cp_merge without writing anything.
-cp_test() {
+function cp_test() {
 	rsync -ahP --chmod=u+w --delete -n -- "${@}"
 }
diff --git a/.config/bash/module/date.sh b/.config/bash/module/date.sh
index 5f92df8..7bf68c8 100644
--- a/.config/bash/module/date.sh
+++ b/.config/bash/module/date.sh
@@ -1,9 +1,9 @@
 # print today date in yyyyMMdd format.
-today() {
+function today() {
 	date +%Y%m%d
 }
 
 # current day of week number.
-dow() {
+function dow() {
 	date +%u
 }
diff --git a/.config/bash/module/dconf.sh b/.config/bash/module/dconf.sh
index 1e8f5c2..947d21a 100644
--- a/.config/bash/module/dconf.sh
+++ b/.config/bash/module/dconf.sh
@@ -1,9 +1,9 @@
-_GDCONF_PATH="${HOME}/.config/linux/gnome.dconf"
+export _GDCONF_PATH="${HOME}/.config/linux/gnome.dconf"
 
-dconf_load() {
+function dconf_load() {
 	sed -i -e s/voronind/$(whoami)/g ${_GDCONF_PATH} ; dconf load / < ${_GDCONF_PATH}
 }
 
-dconf_save() {
+function dconf_save() {
 	dconf dump / > gnome.dconf
 }
diff --git a/.config/bash/module/disk.sh b/.config/bash/module/disk.sh
index a9992c2..dd108e7 100644
--- a/.config/bash/module/disk.sh
+++ b/.config/bash/module/disk.sh
@@ -1,9 +1,9 @@
 # show only physical drive sizes.
-df() {
+function df() {
 	df --si | sed -e '1p' -e "/^\/dev\//!d"
 }
 
 # show combined size in SI.
-du() {
+function du() {
 	du -sh --si -- "${@}"
 }
diff --git a/.config/bash/module/docker.sh b/.config/bash/module/docker.sh
index d66900d..9d0b41d 100644
--- a/.config/bash/module/docker.sh
+++ b/.config/bash/module/docker.sh
@@ -1,91 +1,90 @@
 # show container's volumes.
-docker_volumes() {
+function docker_volumes() {
 	docker inspect -f '{{ .Mounts }}' "${@}"
 }
 
 # Check if any container exited.
-docker_health() {
+function docker_health() {
 	docker ps -a | grep Exited
 }
 
 # prune everything.
-docker_prune() {
+function docker_prune() {
 	docker system prune --volumes --all
 }
 
 # Docker compose shortcut.
 # Usage: dc [SERVICE]
-dc() {
+function dc() {
 	docker compose "${@}"
 }
 
 # Docker compose up.
-dcu() {
+function dcu() {
 	docker compose up -d "${@}"
 }
 
 # Docker compose down.
-dcd() {
+function dcd() {
 	docker compose down "${@}"
 }
 
 # Docker compose pull.
-dcp() {
+function dcp() {
 	docker compose pull "${@}"
 }
 
 # Docker compose logs.
-dcl() {
+function dcl() {
 	docker compose logs -f "${@}"
 }
 
 # Docker compose restart.
-dcr() {
+function dcr() {
 	docker compose restart "${@}"
 }
 
 # Docker compose stop.
-dcs() {
+function dcs() {
 	docker compose stop "${@}"
 }
 
 # Docker compose down & up specified services.
 # Usage: dcdu [SERVICES]
-dcdu() {
+function dcdu() {
 	dcd "${@}"
 	dcu "${@}"
 }
 
 # Docker compose pull & up specified services.
 # Usage: dcpu [SERVICES]
-dcpu() {
+function dcpu() {
 	dcp "${@}"
 	dcu "${@}"
 }
 
 # Docker compose up & attach to logs for specified services.
 # Usage: dcul [SERVICES]
-dcul() {
+function dcul() {
 	dcu "${@}" && dcl "${@}"
 }
 
 # Find out container's IP address.
 # Usage: docker_up <CONTAINER NAME>
-docker_ip() {
+function docker_ip() {
 	docker inspect -f '\''{{range .NetworkSettings.Networks}}{{.IPAddress}}{{end}}'\' "${1}" | sed "s/^.//" | sed "s/.$//"
 }
 
 # Update all docker images.
-docker_update() {
+function docker_update() {
 	docker images --format "{{.Repository}}:{{.Tag}}" | xargs -L1 docker pull
 }
 
-# autocomplete.
-_dc_services() {
+function _dc_services() {
 	_autocomplete "$(docker compose config --services 2> /dev/null)"
 }
 
-_dc_containers() {
+function _dc_containers() {
 	_autocomplete "$(docker ps --format "\""{{.Names}}"\"")"
 }
 
diff --git a/.config/bash/module/export.sh b/.config/bash/module/export.sh
index 49eb75f..2d18926 100644
--- a/.config/bash/module/export.sh
+++ b/.config/bash/module/export.sh
@@ -1,5 +1,5 @@
 # add all links in ~/app/bin/
-PATH=$( find -L $HOME/app/bin/ -type d -printf ":%p" 2> /dev/null ):$PATH
+export PATH=$( find -L $HOME/app/bin/ -type d -printf ":%p" 2> /dev/null ):$PATH
 
 # specify locale.
 #export LC_ALL=C
@@ -23,3 +23,6 @@ export ANDROID_SDK_ROOT="$HOME/.android/sdk"
 export TEXMFVAR="$HOME/app/tex/data/var"
 export TEXMFCONFIG="$HOME/app/tex/data/config"
 export TEXMFLOCAL="$HOME/app/tex/data/local"
+
+# Dotfiles exports.
+export DOTFILES_PATH="${HOME}/.config/bash/module"
diff --git a/.config/bash/module/ffmpeg.sh b/.config/bash/module/ffmpeg.sh
index e544a9e..a035680 100644
--- a/.config/bash/module/ffmpeg.sh
+++ b/.config/bash/module/ffmpeg.sh
@@ -1,6 +1,6 @@
 # mux audio into containers. file names in sound and current dirrectories must match. tmp usage for anime downloads.
 # usage: ffmpeg_mux_audio <SOUND> <OUTPUT DIR>
-ffmpeg_mux_audio() {
+function ffmpeg_mux_audio() {
 	if [[ "$1" = "" ]]; then
 		echo "usage: ffmpeg_mux_audio <SOUND> <OUTPUT DIR>"
 		return 2
@@ -11,7 +11,7 @@ ffmpeg_mux_audio() {
 
 # Mux cover into music file.
 # Usage: ffmpeg_mux_cover <FORMAT> <COVER>
-ffmpeg_mux_cover() {
+function ffmpeg_mux_cover() {
 	if [[ "${1}" = "" ]]; then
 		echo "Usage: ffmpeg_mux_cover <FORMAT> <COVER>"
 		return 2
@@ -41,7 +41,7 @@ ffmpeg_mux_cover() {
 
 # Change music metadata.
 # Usage: ffmpeg_music_meta <FORMAT>
-ffmpeg_music_meta() {
+function ffmpeg_music_meta() {
 	if [[ "${1}" = "" ]]; then
 		echo "Usage: ffmpeg_music_meta <FORMAT>"
 		return 2
@@ -71,7 +71,7 @@ ffmpeg_music_meta() {
 	rm -d out/
 }
 
-_ffprobe_fps() {
+function _ffprobe_fps() {
 	local fps=$(ffprobe -v 0 -of csv=p=0 -select_streams v:0 -show_entries stream=r_frame_rate "${1}")
 	fps="${fps%%/*}"
 	echo "${fps}"
@@ -82,9 +82,7 @@ _ffprobe_keyint() {
 	echo $((fps*5))
 }
 
-_ffprobe_ba() {
+function _ffprobe_ba() {
 	local ba=$(ffprobe -v error -select_streams a:0 -show_entries stream=bit_rate -of default=noprint_wrappers=1:nokey=1 "${1}")
 	[[ "${ba}" != "N/A" ]] && echo $((ba/1024)) || echo 128
 }
-
-export -f _ffprobe_keyint _ffprobe_ba _ffprobe_fps
diff --git a/.config/bash/module/file.sh b/.config/bash/module/file.sh
index 41bd777..c1fc21d 100644
--- a/.config/bash/module/file.sh
+++ b/.config/bash/module/file.sh
@@ -1,5 +1,5 @@
 # Open file/dir in GUI.
 # Usage: o <FILE>
-o() {
+function o() {
 	xdg-open "${@}"
 }
diff --git a/.config/bash/module/find.sh b/.config/bash/module/find.sh
index 4116f76..2c20125 100644
--- a/.config/bash/module/find.sh
+++ b/.config/bash/module/find.sh
@@ -1,5 +1,10 @@
 # Find all file extensions.
-find_ext() {
+function find_ext() {
 	local types=($(find -type f | sed -e "s/.*\///" -e "s/^\.//" -e "/\./!d" -e "s/.*\.//"))
 	echo "${types[@]}" | tr ' ' '\n' | sort -u
 }
+
+# Find all module functions.
+function find_functions() {
+	cat "${DOTFILES_PATH}"/* | grep "^function.*()" | sed -e "s/^function //" -e "s/().*//"
+}
diff --git a/.config/bash/module/fix.sh b/.config/bash/module/fix.sh
index 994fecd..0e1bfb5 100644
--- a/.config/bash/module/fix.sh
+++ b/.config/bash/module/fix.sh
@@ -1,7 +1,7 @@
 # fix when ethernet mistakenly detects 100 Mb instead of 1000 Mb.
 # usage: fix_ethernet_speed <DEVICE> <SPEED>
 # SPEED is one of 10/100/1000 etc.
-fix_ethernet_speed() {
+function fix_ethernet_speed() {
 	local device="${1}"
 	local speed="${2}"
 
@@ -15,6 +15,6 @@ fix_ethernet_speed() {
 
 # fix files wrong sftp password.
 # alias fix_files_sftp="secret-tool clear protocol sftp server 192.168.1.2"
-fix_files_sftp() {
+function fix_files_sftp() {
 	secret-tool clear protocol sftp
 }
diff --git a/.config/bash/module/git.sh b/.config/bash/module/git.sh
index b3bf7a8..a4d3b31 100644
--- a/.config/bash/module/git.sh
+++ b/.config/bash/module/git.sh
@@ -1,103 +1,103 @@
 # Git push.
-gps() {
+function gps() {
 	git push "${@}"
 }
 
 # Git force push.
-gpsf() {
+function gpsf() {
 	git push --force "${@}"
 }
 
 # Git pull.
-gpl() {
+function gpl() {
 	git pull "${@}"
 }
 
 # Git log.
-gl() {
+function gl() {
 	git log "${@}"
 }
 
 # Git status.
-gs() {
+function gs() {
 	git status "${@}"
 }
 
 # Git stash.
-gst() {
+function gst() {
 	git stash "${@}"
 }
 
 # Git diff.
-gd() {
+function gd() {
 	git diff "${@}"
 }
 
 # Git commit.
-gc() {
+function gc() {
 	git commit -m "${@}"
 }
 
 # Git checkout.
-gch() {
+function gch() {
 	git checkout "${@}"
 }
 
 # Git checkout branch.
-gchb() {
+function gchb() {
 	git checkout -b "${@}"
 }
 
 # Git branch.
-gb() {
+function gb() {
 	git branch --all "${@}"
 }
 
 # Git branch delete.
-gbd() {
+function gbd() {
 	git branch -D "${@}"
 }
 
 # Git branch delete all except current.
-gbda() {
+function gbda() {
 	git branch | grep -v ^* | xargs git branch -D
 }
 
 # Git fetch all.
-gf() {
+function gf() {
 	git fetch --all -v -p
 }
 
 # Git tag.
-gt() {
+function gt() {
 	git tag "${@}"
 }
 
 # Git ignore files.
-gi() {
+function gi() {
 	git ls-files -ci --exclude-standard -z | xargs -0 git rm --cached
 }
 
 # Git patch create.
 # Usage: gpc <FILE>
-gpc() {
+function gpc() {
 	git diff > "${@}"
 }
 
 # Git patch (apply).
 # Usage: gp <FILE>
-gp() {
+function gp() {
 	git apply "${@}"
 }
 
 # Run git garbage collection.
-ggc() {
+function ggc() {
 	git gc --aggressive --no-cruft --prune=now
 }
 
 # Preview diff while adding. adds current dir by default.
 # Usage: ga [FILES]
-ga() {
+function ga() {
 	local target=${@}
 	
 	if [[ "${target}" = "" ]]; then
@@ -110,7 +110,7 @@ ga() {
 
 # rebase by X commits or from root. when COUNT is 0 - rebase from root. default is 2.
 # usage: gr [COMMIT COUNT]
-gr() {
+function gr() {
 	local base="${1}"
 
 	# rebase last 2 commits by default.
@@ -128,7 +128,7 @@ gr() {
 
 # specify git user as Dmitry Voronin with provided email.
 # usage: gu [EMAIL]
-gu() {
+function gu() {
 	local name="Dmitry Voronin"
 	local email="${1}"
 
@@ -143,33 +143,33 @@ gu() {
 
 # Get my git repo.
 # Usage: gg <REPO>
-gg() {
+function gg() {
 	git clone https://git.voronind.com/voronind/"${1}"
 }
 
 # See diff for a specific commit.
 # Usage: gdc <COMMITHASH>
-gdc() {
+function gdc() {
 	git diff "${1}^!"
 }
 
 # Show current branch.
-_git_current_branch() {
+function _git_current_branch() {
 	git branch --show-current 2> /dev/null
 }
 
 # Show origin's url.
-_git_origin_url() {
+function _git_origin_url() {
 	git remote get-url origin
 }
 
 # Get this dotfiles url.
-_git_dotfiles_url() {
+function _git_dotfiles_url() {
 	echo 'https://git.voronind.com/voronind/linux.git'
 }
 
 # Check if current git repo is this dotfiles.
-_git_is_dotfiles() {
+function _git_is_dotfiles() {
 	# [[ "$(_git_origin_url)" = "$(_git_dotfiles_url)" ]]
 	local dir="${PWD}"
 
@@ -206,7 +206,7 @@ __git_complete gt _git_tag &> /dev/null
 __git_complete gp _git_apply &> /dev/null
 __git_complete ga _git_add &> /dev/null
 
-_gu() {
+function _gu() {
 	_autocomplete_first account@voronind.com dd.voronin@fsight.ru
 }
 
diff --git a/.config/bash/module/help.sh b/.config/bash/module/help.sh
index 8145e6d..fcc894d 100644
--- a/.config/bash/module/help.sh
+++ b/.config/bash/module/help.sh
@@ -1 +1,16 @@
-# TODO: Help function that parses help header from modules.
+# Get help about bash function.
+function help() {
+	local fun="${1}"
+
+	if [[ $(find_functions | grep "${fun}") = "" ]]; then
+		echo "Function not found."
+		return 1
+	fi
+
+	sed -e '$s/$/\n/' -s "${DOTFILES_PATH}"/* | sed -n -e "/function ${fun}()/q;p" | tac | sed -n -e "/^$/q;p" | tac | sed -e "s/^# \+//"
+}
+
+# Short for help.
+function h() {
+	help "${@}"
+}
diff --git a/.config/bash/module/ls.sh b/.config/bash/module/ls.sh
index ccb8a42..92361e6 100644
--- a/.config/bash/module/ls.sh
+++ b/.config/bash/module/ls.sh
@@ -3,18 +3,18 @@ unalias l ll lll llll la lla &> /dev/null
 unset l ll lll llll la lla &> /dev/null
 
 # list files in dir.
-l() {
+function l() {
 	ls -lhv --si --group-directories-first "$@"
 }
 
 # list last modified files first.
-ll() {
+function ll() {
 	ls -lhvtr --si "$@"
 }
 
 # list files in tree structure.
 # usage: lll [DEPTH] [DIRS]
-lll() {
+function lll() {
 	local IFS=$'\n'
 	local depth="${1}"
 	local target=("${@:2}")
@@ -27,19 +27,16 @@ lll() {
 }
 
 # list files recursively.
-llll() {
+function llll() {
 	ls -RlAhv --si --group-directories-first "$@"
 }
 
 # list all files in dir, incl. hidden files.
-la() {
+function la() {
 	ls -lAh --si --group-directories-first "$@"
 }
 
 # list all files in dir, incl. hidden files, sorted by mtime.
-lla() {
+function lla() {
 	ls -lAhtr --si "$@"
 }
-
-# export.
-export -f l ll lll llll la lla
diff --git a/.config/bash/module/name.sh b/.config/bash/module/name.sh
index 4f769c5..c2fd94f 100644
--- a/.config/bash/module/name.sh
+++ b/.config/bash/module/name.sh
@@ -1,6 +1,6 @@
 # rename files to strip all special characters.
 # usage: name [FILES]
-name() {
+function name() {
 	local IFS=$'\n'
 	local targets=("${@}")
 	local count=0
@@ -64,7 +64,7 @@ name() {
 
 # rename all files to their hashes while keeping extensions.
 # usage: name_hash [FILES]
-name_hash() {
+function name_hash() {
 	local IFS=$'\n'
 	local targets=("${@}")
 	local count=0
@@ -124,7 +124,7 @@ name_hash() {
 
 # check hashes for renamed files.
 # usage: name_hash_check [FILES]
-name_hash_check() {
+function name_hash_check() {
 	local IFS=$'\n'
 	local targets=("${@}") # target file(s).
 	local total=${#}			 # total to process.
@@ -166,7 +166,7 @@ name_hash_check() {
 
 # rename files for Jellyfin series, i.e. Episode S01E01.mkv
 # usage: name_series <SEASON> [FILES]
-name_series() {
+function name_series() {
 	local IFS=$'\n'
 	local season="${1}"
 	local targets=("${@:2}")
@@ -220,7 +220,7 @@ name_series() {
 
 # rename files for Kavita manga format.
 # usage: name_manga <SEASON> [FILES]
-name_manga() {
+function name_manga() {
 	local IFS=$'\n'
 	local season="${1}"
 	local targets=("${@:2}")
@@ -275,7 +275,7 @@ name_manga() {
 
 # rename files for new extension.
 # usage: name_ext <EXTENSION> [FILES]
-name_ext() {
+function name_ext() {
 	local IFS=$'\n'
 	local extension="${1}"
 	local targets=("${@:2}")
@@ -327,7 +327,7 @@ name_ext() {
 
 # Change file prefixes.
 # Usage: name_prefix <OLD> <NEW> [FILES]
-name_prefix() {
+function name_prefix() {
 	local IFS=$'\n'
 	local old="${1}"
 	local new="${2}"
@@ -374,7 +374,7 @@ name_prefix() {
 
 # Change file postfix.
 # Usage: name_postfix <OLD> <NEW> [FILES]
-name_postfix() {
+function name_postfix() {
 	local IFS=$'\n'
 	local old="${1}"
 	local new="${2}"
@@ -420,7 +420,7 @@ name_postfix() {
 }
 
 # Replace part of the name.
-name_replace() {
+function name_replace() {
 	local IFS=$'\n'
 	local old="${1}"
 	local new="${2}"
@@ -463,8 +463,4 @@ name_replace() {
 		echo -e "${color_bred}Failed: ${failed}.${color_default}"
 		false
 	fi
-
 }
-
-# export for parallel.
-export -f name name_hash name_hash_check name_ext
diff --git a/.config/bash/module/ncdu.sh b/.config/bash/module/ncdu.sh
index 19a2169..e2c3289 100644
--- a/.config/bash/module/ncdu.sh
+++ b/.config/bash/module/ncdu.sh
@@ -1,4 +1,4 @@
 # search only on current filesystem.
-ncdu() {
+function ncdu() {
 	ncdu -x -- "${@}"
 }
diff --git a/.config/bash/module/notify.sh b/.config/bash/module/notify.sh
index 7f922d6..7e14967 100644
--- a/.config/bash/module/notify.sh
+++ b/.config/bash/module/notify.sh
@@ -1,9 +1,9 @@
 # send Telegram notification.
-notify() {
+function notify() {
 	curl -X POST -H 'Content-Type: Application/json' -d "{\"chat_id\":\"155897358\",\"text\":\"$1\"}" https://api.telegram.org/bot2046849441:AAHQpjRK4xpL8tEUyN4JTSDUUze4J0wSIy4/sendMessage &> /dev/null
 }
 
 # send silent Telegram notification.
-notify_silent() {
+function notify_silent() {
 	curl -X POST -H 'Content-Type: Application/json' -d "{\"chat_id\":\"155897358\",\"text\":\"$1\",\"disable_notification\":\"true\"}" https://api.telegram.org/bot2046849441:AAHQpjRK4xpL8tEUyN4JTSDUUze4J0wSIy4/sendMessage &> /dev/null
 }
diff --git a/.config/bash/module/own.sh b/.config/bash/module/own.sh
index e4ff8fd..0a427f2 100644
--- a/.config/bash/module/own.sh
+++ b/.config/bash/module/own.sh
@@ -1,6 +1,6 @@
 # change file ownership to specified user id and restrict access to him.
 # usage: own [USER] [FILES]
-own() {
+function own() {
 	local file="${2}"
 	local user="${1}"
 
diff --git a/.config/bash/module/pack.sh b/.config/bash/module/pack.sh
index 1143c38..8f33e00 100644
--- a/.config/bash/module/pack.sh
+++ b/.config/bash/module/pack.sh
@@ -1,8 +1,8 @@
-_UNPACK_SUPPORTED=".tar$|.tgz$|.txz$|.tar.gz$|.tar.xz$|.zip$|.iso$|.rar$"
+export _UNPACK_SUPPORTED=".tar$|.tgz$|.txz$|.tar.gz$|.tar.xz$|.zip$|.iso$|.rar$"
 
 # Pack files into desired format.
 # Usage: pack <TARGET.ext> [FILES]
-pack() {
+function pack() {
 	local IFS=$'\n'
 	local output="${1}"
 	local targets=("${@:2}")
@@ -61,7 +61,7 @@ pack() {
 
 # attempt to unpack everything.
 # usage: unpack [FILES]
-unpack() {
+function unpack() {
 	local IFS=$'\n'
 	local targets=("${@}")
 	local count=0
@@ -140,65 +140,62 @@ unpack() {
 	fi
 }
 
-_pack_zip() {
+function _pack_zip() {
 	zip -9 -r "${@}"
 }
 
-_pack_tgz() {
+function _pack_tgz() {
 	tar -c "${@:2}" | pv -s $(du -csb "${@:2}" | sed -n -e '$p' | awk '{print $1}') | gzip -1 > "${1}"
 }
 
-_pack_txz() {
+function _pack_txz() {
 	tar -c "${@:2}" | pv -s $(du -csb "${@:2}" | sed -n -e '$p' | awk '{print $1}') | xz -9e > "${1}"
 }
 
-_pack_tar() {
+function _pack_tar() {
 	tar -c "${@:2}" | pv -s $(du -csb "${@:2}" | sed -n -e '$p' | awk '{print $1}') > "${1}"
 }
 
-_pack_gz() {
+function _pack_gz() {
 	pv "${2}" | gzip -1 > "${1}"
 }
 
-_pack_xz() {
+function _pack_xz() {
 	pv "${2}" | xz -9e > "${1}"
 }
 
-_unpack_zip() {
+function _unpack_zip() {
 	unzip "${1}"
 }
 
-_unpack_7z() {
+function _unpack_7z() {
 	7za x "${1}"
 }
 
-_unpack_tgz() {
+function _unpack_tgz() {
 	pv "${1}" | gzip -d | tar -xf -
 }
 
-_unpack_txz() {
+function _unpack_txz() {
 	pv "${1}" | xz -d | tar -xf -
 }
 
-_unpack_tar() {
+function _unpack_tar() {
 	pv "${1}" | tar -xf -
 }
 
-_unpack_iso() {
+function _unpack_iso() {
 	7za x "${1}"
 }
 
-_unpack_rar() {
+function _unpack_rar() {
 	unrar x "${1}"
 }
 
-_unpack_gz() {
+function _unpack_gz() {
 	pv "${1}" | gzip -d > "${1%.gz}"
 }
 
-_unpack_xz() {
+function _unpack_xz() {
 	pv "${1}" | xz -d > "${1%.xz}"
 }
-
-# export functions.
-export -f pack unpack _pack_tgz _pack_txz _pack_tar _pack_zip _unpack_zip _unpack_7z _unpack_tgz _unpack_txz _unpack_tar _unpack_iso _unpack_rar _pack_gz _pack_xz _unpack_gz _unpack_xz
diff --git a/.config/bash/module/parse.sh b/.config/bash/module/parse.sh
index c173f1c..0550b00 100644
--- a/.config/bash/module/parse.sh
+++ b/.config/bash/module/parse.sh
@@ -1,6 +1,6 @@
 # parse data and output simplified format.
 # usage: parse_simplify <STRING>
-parse_simplify() {
+function parse_simplify() {
 	echo "${*}" | \
 		sed -e "s/ /_/g" \
 				-e "s/[^[:alnum:]_-]//g" \
@@ -12,7 +12,7 @@ parse_simplify() {
 
 # Parse to CamelCase.
 # Usage: parse_camel <STRING>
-parse_camel() {
+function parse_camel() {
 	local IFS=${IFS}_-
 	local parts=($(parse_simplify ${1}))
 	local result
@@ -27,7 +27,7 @@ parse_camel() {
 
 # parse data keeping only alphanumeric characters.
 # usage: parse_alnum <STRING>
-parse_alnum() {
+function parse_alnum() {
 	echo "${*}" | \
 		sed -e "s/[^[:alnum:]]//g"
 }
diff --git a/.config/bash/module/permissions.sh b/.config/bash/module/permissions.sh
index 09644e1..6e2c05d 100644
--- a/.config/bash/module/permissions.sh
+++ b/.config/bash/module/permissions.sh
@@ -1,9 +1,9 @@
 # recursively change permissions to allow read sharing with group and others. 
-perm_share() {
+function perm_share() {
 	find . -type d -exec chmod 755 {} \;; find . -type f -exec chmod 644 {} \;
 }
 
 # recursively change permissions to restrict access for group and others.
-perm() {
+function perm() {
 	find . -type d -exec chmod 700 {} \;; find . -type f -exec chmod 600 {} \;
 }
diff --git a/.config/bash/module/ps.sh b/.config/bash/module/ps.sh
index 539397b..a9b3ddd 100644
--- a/.config/bash/module/ps.sh
+++ b/.config/bash/module/ps.sh
@@ -1,3 +1,3 @@
-ps() {
+function ps() {
 	ps aux | grep "${@}"
 }
diff --git a/.config/bash/module/ps1.sh b/.config/bash/module/ps1.sh
index c114ad8..b6834f1 100644
--- a/.config/bash/module/ps1.sh
+++ b/.config/bash/module/ps1.sh
@@ -1,7 +1,7 @@
-PROMPT_COMMAND=(__prompt_command "${PROMPT_COMMAND[@]}")
+export PROMPT_COMMAND=(__prompt_command "${PROMPT_COMMAND[@]}")
 
 # custom terminal prompt format.
-__prompt_command() {
+function __prompt_command() {
 	local last_status="${?}"
 	local is_error=false
 	local is_root=false
@@ -80,7 +80,7 @@ __prompt_command() {
 	fi
 }
 
-_ps1error() {
+function _ps1error() {
 	local type
 	case ${1} in
 		1)	 type="GENERAL" ;;
diff --git a/.config/bash/module/recursive.sh b/.config/bash/module/recursive.sh
index fd17824..f2461b2 100644
--- a/.config/bash/module/recursive.sh
+++ b/.config/bash/module/recursive.sh
@@ -1,6 +1,6 @@
 # Run something recursively over all directories.
 # Usage: recursive <COMMAND>
-recursive() {
+function recursive() {
 	local IFS=$'\n'
 	local current="${PWD}"
 	local dirs=$(find -type d)
@@ -32,7 +32,7 @@ recursive() {
 # Run something recursively over all directories.
 # Usage: recursive1 <COMMAND>
 # TODO: create generic function.
-recursive1() {
+function recursive1() {
 	local IFS=$'\n'
 	local current="${PWD}"
 	local dirs=$(find -mindepth 1 -maxdepth 1 -type d)
diff --git a/.config/bash/module/rust.sh b/.config/bash/module/rust.sh
index 2aba02a..308323b 100644
--- a/.config/bash/module/rust.sh
+++ b/.config/bash/module/rust.sh
@@ -1,4 +1,4 @@
 # Open Rust book.
-rust_book() {
+function rust_book() {
 	rustup docs --book
 }
diff --git a/.config/bash/module/su.sh b/.config/bash/module/su.sh
index 180c372..62f3975 100644
--- a/.config/bash/module/su.sh
+++ b/.config/bash/module/su.sh
@@ -1,4 +1,4 @@
 # I'm lazy af.
-s() {
+function s() {
 	su
 }
diff --git a/.config/bash/module/terminal.sh b/.config/bash/module/terminal.sh
index e73a57a..5b914f6 100644
--- a/.config/bash/module/terminal.sh
+++ b/.config/bash/module/terminal.sh
@@ -1,4 +1,4 @@
-tsize() {
+function tsize() {
 	local width=$(tput cols)
 	local height=$(tput lines)
 	echo "${width}x${height}"
diff --git a/.config/bash/module/tmp.sh b/.config/bash/module/tmp.sh
index 825cb91..f48962b 100644
--- a/.config/bash/module/tmp.sh
+++ b/.config/bash/module/tmp.sh
@@ -1,5 +1,5 @@
 # CD into host's primary tmp dir.
-tmp() {
+function tmp() {
 	local host="${HOSTNAME}"
 	local tmp_path
 
diff --git a/.config/bash/module/tmux.sh b/.config/bash/module/tmux.sh
index 047b851..78829c8 100644
--- a/.config/bash/module/tmux.sh
+++ b/.config/bash/module/tmux.sh
@@ -1,5 +1,5 @@
 # create/attach to named session.
-ta() {
+function ta() {
 	local name="$1"
 
 	# set default name.
@@ -12,18 +12,18 @@ ta() {
 }
 
 # detach.
-td() {
+function td() {
 	tmux detach-client
 }
 
 # list.
-tl() {
+function tl() {
 	tmux list-sessions
 }
 
 # Rename current session. Uses current dir name by default.
 # Usage: trn [NAME]
-trn() {
+function trn() {
 	local name="${1}"
 
 	[[ "${name}" = "" ]] && name="${PWD##*/}"
@@ -33,7 +33,7 @@ trn() {
 
 # Assign name (to window). Uses current dir name by default.
 # Usage: tn [NAME]
-tn() {
+function tn() {
 	local name="${1}"
 
 	[[ "${name}" = "" ]] && name="${PWD##*/}"
@@ -42,7 +42,7 @@ tn() {
 }
 
 # kill specified session or default one.
-tk() {
+function tk() {
 	# set default name.
 	if [[ "${1}" = "" ]]; then
 		1="main"
@@ -55,7 +55,7 @@ tk() {
 }
 
 # kill all sessions.
-tka() {
+function tka() {
 	local sessions=$(tmux list-sessions | sed -e 's/:.*//')
 
 	for session in $sessions; do
@@ -64,15 +64,15 @@ tka() {
 }
 
 # autocompletes.
-_complete_tmux_session() {
+function _complete_tmux_session() {
 	_autocomplete_first "$(tmux list-sessions 2> /dev/null | sed -e 's/:.*//')"
 }
 
-_complete_tmux_sessions() {
+function _complete_tmux_sessions() {
 	_autocomplete "$(tmux list-sessions 2> /dev/null | sed -e 's/:.*//')"
 }
 
-_complete_tmux_name() {
+function _complete_tmux_name() {
 	_autocomplete_first "${PWD##*/}"$'\n'$(ls --classify | grep /$ | sed -e 's/\/$//')
 }
 
diff --git a/.config/bash/module/todo.sh b/.config/bash/module/todo.sh
index 5b7e188..e14e4f5 100644
--- a/.config/bash/module/todo.sh
+++ b/.config/bash/module/todo.sh
@@ -1,4 +1,4 @@
 # Open ~/.todo.md file.
-todo() {
+function todo() {
 	vi ~/.todo.md
 }
diff --git a/.config/bash/module/toolbx.sh b/.config/bash/module/toolbx.sh
index de6da5a..5df9307 100644
--- a/.config/bash/module/toolbx.sh
+++ b/.config/bash/module/toolbx.sh
@@ -1,6 +1,6 @@
 # attach/create toolbx container with default or specified name.
 # usage: tb [NAME]
-tba() {
+function tba() {
 	local name="${1}"
 	
 	# set default name.
@@ -38,7 +38,7 @@ tba() {
 
 # remove toolbx container with default or specified name.
 # usage: tbk [NAME]
-tbk() {
+function tbk() {
 	local name="${1}"
 	
 	# set default name.
@@ -52,7 +52,7 @@ tbk() {
 
 # install rpm-fusion repository.
 # usage: tb_rpmfusion [NAME]
-tb_rpmfusion() {
+function tb_rpmfusion() {
 	local name="${1}"
 	
 	# set default name.
@@ -65,12 +65,12 @@ tb_rpmfusion() {
 }
 
 # list all containers.
-tbl() {
+function tbl() {
 	toolbox list -c
 }
 
 # autocomplete.
-_tb_containers() {
+function _tb_containers() {
 	_autocomplete_first "$(toolbox list -c | sed -e '1d' | awk '{ print $2 }')"
 }
 
diff --git a/.config/bash/module/transcode.sh b/.config/bash/module/transcode.sh
index d0d9544..b39be7f 100644
--- a/.config/bash/module/transcode.sh
+++ b/.config/bash/module/transcode.sh
@@ -1,6 +1,6 @@
 # Convert between different formats.
 # Usage: transcode <FORMAT> [FILES]
-transcode() {
+function transcode() {
 	local IFS=$'\n'
 	local targets=("${@:2}")
 	local format="${1}"
@@ -90,32 +90,32 @@ transcode() {
 	fi
 }
 
-_transcode_gz-xz() {
+function _transcode_gz-xz() {
 	[[ -f "${2}" ]] && return 1
 	pv "${1}" | gzip -d | xz -9e > "${2}"
 }
 
-_transcode_xz-gz() {
+function _transcode_xz-gz() {
 	[[ -f "${2}" ]] && return 1
 	pv "${1}" | xz -d | gzip -1 > "${2}"
 }
 
-_transcode_mp3() {
+function _transcode_mp3() {
 	ffmpeg -n -i "${1}" -c:a libmp3lame -b:a 320k -f mp3 "${2}"
 }
 
-_transcode_flac() {
+function _transcode_flac() {
 	ffmpeg -n -i "${1}" -c:a flac -f flac "${2}"
 }
 
-_transcode_mka() {
+function _transcode_mka() {
 	local braudio=$(_ffprobe_ba "${1}")
 	[[ ${braudio} -gt 128 ]] && braudio=128
 
 	ffmpeg -n -i "${1}" -ac 2 -c:a libopus -b:a ${braudio}k -vn "${2}"
 }
 
-_transcode_mkv() {
+function _transcode_mkv() {
 	local keyint=$(_ffprobe_keyint "${1}")
 	local braudio=$(_ffprobe_ba "${1}")
 	[[ ${braudio} -gt 128 ]] && braudio=128
@@ -123,6 +123,3 @@ _transcode_mkv() {
 	# ffmpeg -n -i "${1}" -c:a libopus -b:a ${braudio}k -c:v libsvtav1 -crf 30 -svtav1-params "fast-decode=1:tune=0" -preset 8 -pix_fmt yuv420p10le -g ${keyint} -vf "scale=-2:min'(1080,ih)'" "${2}"
 	ffmpeg -n -i "${1}" -map 0 -map -v -map V -map -t -c:s srt -ac 2 -c:a libopus -b:a ${braudio}k -c:v libsvtav1 -crf 30 -svtav1-params "fast-decode=1:tune=0" -pix_fmt yuv420p10le -g ${keyint} -vf "scale=-2:min'(1080,ih)'" "${2}"
 }
-
-# Export.
-export -f transcode _transcode_gz-xz _transcode_xz-gz _transcode_mp3 _transcode_flac _transcode_mka _transcode_mkv
diff --git a/.config/bash/module/try.sh b/.config/bash/module/try.sh
index 9e1283f..8bb1a06 100644
--- a/.config/bash/module/try.sh
+++ b/.config/bash/module/try.sh
@@ -1,5 +1,5 @@
 # retry command every 2 sec until it completes.
-try() {
+function try() {
 	local result=-1
 	
 	while [ "$result" != 0 ]; do
diff --git a/.config/bash/module/util.sh b/.config/bash/module/util.sh
index 8625b1e..854413d 100644
--- a/.config/bash/module/util.sh
+++ b/.config/bash/module/util.sh
@@ -1,4 +1,4 @@
 # Get the number of avaialble cores (threads).
-_core_count() {
+function _core_count() {
 	cat /proc/cpuinfo | grep ^processor | wc -l
 }
diff --git a/.config/bash/module/vdl.sh b/.config/bash/module/vdl.sh
index 1fcb1f3..ef5fc7c 100644
--- a/.config/bash/module/vdl.sh
+++ b/.config/bash/module/vdl.sh
@@ -1,6 +1,6 @@
 # Download video from URL in background. When no [LINK] specified, it tries to update previously downloaded link.
 # Usage: vdl [LINK]
-vdl() {
+function vdl() {
 	# Check that ffmpeg and ffprobe are available.
 	if [[ "$(ffmpeg -version)" = "" ]] || [[ "$(ffprobe -version)" = "" ]]; then
 		echo -e "${color_red}ffmpeg and ffprobe are required.${color_default}"
@@ -26,12 +26,12 @@ vdl() {
 	yt-dlp -f 'bestvideo[height<=?1081]+bestaudio/best' --download-archive index.txt --embed-thumbnail --embed-subs --write-auto-subs --embed-metadata --merge-output-format mkv -cio '%(playlist_index)000006d_%(id)s.%(ext)s' ${target} # || _vdl_retry
 }
 
-vdl_vk() {
+function vdl_vk() {
 	vdl --format mp4 "${@}"
 }
 
 # Temporary fix for crashes.
-_vdl_retry() {
+function _vdl_retry() {
 	for file in *.part; do
 		local number="${file%%_*}"
 		rm ${number}*
@@ -40,6 +40,6 @@ _vdl_retry() {
 }
 
 # download all videos from file.
-vdl_file() {
+function vdl_file() {
 	vdl -a "${@}"
 }
diff --git a/.config/bash/module/vi.sh b/.config/bash/module/vi.sh
index 5a44ab6..78ecedc 100644
--- a/.config/bash/module/vi.sh
+++ b/.config/bash/module/vi.sh
@@ -1,9 +1,9 @@
 # default vim.
-vi() {
+function vi() {
 	vi -c "filetype plugin indent on" -c "set autoindent" -c "set tabstop=2" -c "set shiftwidth=2" -c "set expandtab" -c "set number" -- "${@}"
 }
 
 # neovim.
-v() {
+function v() {
 	nvim -- "${@}"
 }
diff --git a/.config/bash/module/wallpaper.sh b/.config/bash/module/wallpaper.sh
index c7c488e..84a20fd 100644
--- a/.config/bash/module/wallpaper.sh
+++ b/.config/bash/module/wallpaper.sh
@@ -1,5 +1,5 @@
 # set specified file as a wallpaper.
-wallpaper() {
+function wallpaper() {
 	path_wallpaper=~/.local/share/backgrounds/background.jpg
 	cp "$1" $path_wallpaper
 	chmod 644 $path_wallpaper
diff --git a/.config/bash/module/watch.sh b/.config/bash/module/watch.sh
index 0006c0d..4d18ccb 100644
--- a/.config/bash/module/watch.sh
+++ b/.config/bash/module/watch.sh
@@ -1,12 +1,12 @@
 # Watch command output with 2 second interval.
 # Usage: w <COMMAND>
-w() {
+function w() {
 	watch -n 2 "${@}"
 }
 
 # Watch command output with minimal interval.
 # Usage: ww <COMMAND>
-ww() {
+function ww() {
 	watch -n 0 "${@}"
 }