zshrc: integrate fzf, fix errors, remove unused

- fzf was integrated for history, searching, killing, and scanmem
- unused python2 and battery aliases removed
- PgUp/PgDn "go all the way to the top/btm of history" removed (why does it exist?)
- fixed typos, linting

etc/zsh/zshrc

@@ -42,11 +42,10 @@ alias gitp="git push"
 alias gitl="git log --graph --oneline --decorate --all"
 alias gitd="git diff --word-diff"
 alias Y="noglob yt-dlp --no-mtime --add-metadata --embed-subs -f 'bestvideo[height<=1080]+bestaudio/best[height<=1080]'"
-alias Ymkv="Y-no-container --merge-output-format mkv --remux-video mkv"
+alias Ymkv="Y -no-container --merge-output-format mkv --remux-video mkv"
-alias Ymp4="Y-no-container --merge-output-format mp4 --remux-video mp4"
+alias Ymp4="Y -no-container --merge-output-format mp4 --remux-video mp4"
 alias Ysound="noglob yt-dlp --no-mtime -f bestaudio --remux-video opus"
-alias battery="upower -i /org/freedesktop/UPower/devices/battery_BAT0"
+alias p=python
-alias pp=python2
 alias ppp=python3
 alias Ju="journalctl --unit"
 alias Jue="journalctl --pager-end --unit"
@@ -85,7 +84,7 @@ mkcd () {
 	mkdir -p "$1" && cd "$1"
 }
 
-psg () { ps axu | grep -v grep | grep -i $* } # hledání v běžících procesech
+psg () { ps axu | grep -v grep | grep -i $* }
 
 pskill () {
 	pids=($(psg $1|awk '{print $2}'))
@@ -96,30 +95,51 @@ pskill () {
 	done
 }
 
-psm () {
+
-	pid=(${=$(psg $1|grep -o --color=no -E "[0-9]+")})
+
-	echo "Found pid=${pid[1]}."
+# ╭─────────────────────────────────────╮
-	scanmem -p ${pid[1]}
+# │  ❤️ FZF ❤️ config and integrations  │ 
+# ╰─────────────────────────────────────╯
+
+# don't follow symlinks due to Wine's love for symlink loops (dosdevices/z: -> /)
+export FZF_DEFAULT_OPTS='--walker=file,dir,hidden --preview "bat --style=plain" --bind alt-a:select-all'
+source <(fzf --zsh)
+
+# Helix and Neovim launchers
+alias hf='fzf -m --bind "enter:become(hx {+})"'
+alias nf='fzf -m --bind "enter:become(nvim {+})"'
+
+# get one or more PIDs using fzf
+function p_pids {
+	ps -eo user,pid,ppid,start,time,command | fzf -m --header-lines=1 --no-preview --wrap | awk '{print $2}'
 }
 
-zres () {
+# p_kill is not necessary, you can just kill -SIGNAL **<tab>
+
+# attach scanmem to a PID
+function p_scanmem {
+	pids=($(p_pids))
+	scanmem -p ${pids[1]}
+}
+
+function zres {
 	. /etc/zsh/zshrc
 	[[ -f ~/.zshrc ]] && . ~/.zshrc
 	hash -r
 }
 
-http-dir () {
+function http-dir {
 	echo "Serving $PWD on 0.0.0.0:55555"
 	python3 -m http.server 55555
 }
 
-function failed_whike () {
+function failed_while {
 	echo "failed while ${1}"
 	exit 1
 }
 
-# loop-shell COMMAND creates a shell that takes user_input and runs COMMAND user_input
+# `loop-shell COMMAND` creates a shell that takes user_input and runs COMMAND user_input
-# e.g. "loop-shell grep -ri" creates a grepping shell
+# e.g. `loop-shell grep -ri` creates a grepping shell
 function loop-shell {
 	while true
 	do
@@ -183,12 +203,9 @@ bindkey "\e[1~" beginning-of-line # Home
 bindkey "\e[H" beginning-of-line # Home
 bindkey "\e[4~" end-of-line # End
 bindkey "\e[F" end-of-line # End
-bindkey "\e[5~" beginning-of-history # PgUp
-bindkey "\e[6~" end-of-history # PgDn
 bindkey "\e[1;5D" backward-word # Ctrl ←
 bindkey "\e[1;5C" forward-word # Ctrl →
 
-
 # load syntax highlighting if available; Gentoo and Arch paths are tried
 for HPATH in "/usr/share/zsh/site-functions/zsh-syntax-highlighting.zsh" "/usr/share/zsh/plugins/zsh-syntax-highlighting/zsh-syntax-highlighting.zsh"
 do