Major zsh overhaul. Check commands before aliasing, afci won't clobber a git dir

shells/zshrc

@@ -18,6 +18,13 @@ setopt APPEND_HISTORY SHARE_HISTORY HISTIGNOREALLDUPS
 export DISABLE_AUTO_TITLE=true
 export EDITOR='vim'
 export FZF_COMPLETION_OPTS='--no-mouse -m -1 -x'
+zstyle ':completion:*' use-cache on
+zstyle ':completion:*' cache-path ~/.cache/zsh
+# Check if a command exists
+ex(){
+  command -v "$1" >/dev/null
+  return $?
+}
 # For pasting in commands that start with $
 $ () {
   $*
@@ -95,14 +102,22 @@ run(){
   gcc -Wall -std=c99 "${1:r}.c" -o "${1:r}" && (echo "Running..." >&2;./"${1:r}")
 }
 alias nmrestart='nmcli radio wifi off;nmcli radio wifi on'
-alias mtr='mtr -t'
+if ex mtr; then
-alias tg='telegram-cli -NWA'
+  alias mtr='mtr -t'
+fi
+if ex telegram-cli; then
+  alias tg='telegram-cli -NWA'
+fi
 alias perm='stat -c "%a %n"'
-alias afci='git x ./autoformat.sh;git add --all;git commit -m "Autoformatted"'
+alias afci='git x ./autoformat.sh;git commit -am "Autoformatted"'
-alias eix="eix -F"
+if ex eix; then
+  alias eix="eix -F"
+fi
 alias mouse1="xmodmap <(echo pointer = 1 2 3)"
 alias mouse2="xmodmap <(echo pointer = 3 2 1)"
-alias ocp="ocp -vs0 -dcurses"
+if ex ocp; then
+  alias ocp="ocp -vs0 -dcurses"
+fi
 alias con='git x php app/console'
 alias srm='shred -uzv'
 alias disphost='export DISPLAY=:0.0'
@@ -110,20 +125,27 @@ alias ll='ls -AlhF'
 alias la='ls -A'
 alias l='ls -CF'
 alias logout='sudo pkill -u $USER'
-alias tmux='tmux -2'
+if ex tmux; then
+  alias tmux='tmux -2'
+fi
 alias less='less -R'
-alias tree='tree -C'
+if ex tree; then
-alias skim="(head -5; tail -5) <"
+  alias tree='tree -C'
-alias cp='rsync --partial -ha --info=progress2 "$@"'
+fi
 alias resource='. ~/.zshrc'
 if [ "$(uname)" != "Darwin" ]; then
   # Not Mac
-  export PATH="/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin:/usr/games:/usr/local/games:$(readlink -e ~/bin)"
+  export PATH="/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin:/usr/games:/usr/local/games:~/bin"
   alias ls='ls --color=always -F'
   alias matlab='matlab -glnx86'
   alias where="readlink -m"
 else
   # It is a mac
+  # Prepend macports directories in /opt/local
+  if ex greadlink; then
+    alias readlink='greadlink'
+    alias where="greadlink -m"
+  fi
   export PATH="/opt/local/sbin:/opt/local/bin:/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin:/usr/games:/usr/local/games:~/bin"
 fi
 if test -f /etc/gentoo-release; then
@@ -192,22 +214,40 @@ alias ............='k ../../../../../../../../../../..'
 alias .............='k ../../../../../../../../../../../..'
 alias ..............='k ../../../../../../../../../../../../..'
 alias ...............='k ../../../../../../../../../../../../../..'
-alias ytdl="youtube-dl $@ -x --audio-format mp3 --audio-quality 0 -c -o '%(title)s.%(ext)s'"
+if ex youtube-dl; then
-alias tux="wemux"
+  alias ytdl="youtube-dl $@ -x --audio-format mp3 --audio-quality 0 -c -o '%(title)s.%(ext)s'"
-alias g="git"
+fi
+if ex wemux; then
+  alias tux="wemux"
+elif ex tmux; then
+  alias tux="tmux a || tmux"
+fi
+if ex git; then
+  alias g="git"
+fi
 alias stdns="sudo sh -c 'echo nameserver 8.8.8.8 > /etc/resolv.conf'"
 alias fvim="vim -u NONE +\"so ~/.vim/plugged/flappyvird-vim/plugin/flappyvird.vim\" +\"so ~/.vim/plugged/flappyvird-vim/autoload/flappyvird.vim\" +\":FlappyVird\" +\":q\""
 alias fk='k `fzf --no-mouse -m -1 -x`'
 alias susp="sudo true&&((slock;sleep 2;nmcli radio wifi off;nmcli radio wifi on)&echo mem | sudo tee /sys/power/state >/dev/null)"
-alias s='sudo -Hu'
+if ex sudo; then
+  alias s='sudo -Hu'
+fi
 alias -g PA='2>&1 | paste'
-alias -g c='rsync --partial -ha --info=progress2 "$@"'
+if ex rsync; then
-alias -g cfat='rsync --partial -hrlc --info=progress2 "$@"'
+  alias -g c='rsync --partial -ha --info=progress2 "$@"'
+  alias -g cfat='rsync --partial -hrlc --info=progress2 "$@"'
+  alias cp='rsync --partial -ha --info=progress2 "$@"'
+fi
 alias -g nify=" > /dev/null 2>&1 &"
 alias -g nifyd=" > /dev/null 2>&1 & disown"
 alias -g L="2>&1|less"
-alias -g G='|& ag'
+if ex ag; then
-alias -g GA='|& ag --pager less'
+  alias -g G='|& ag'
+elif ex egrep; then
+  alias -g G='|& egrep'
+elif ex grep; then
+  alias -g G='|& grep'
+fi
 timer() {
   for i in {1.."$1"}; do
     sleep 1
@@ -482,10 +522,13 @@ k(){
     vim "$@"
   fi
 }
-(( $+TMUX )) && unset zle_bracketed_paste
+if (( $+TMUX )) || [[ "$TERM" = "screen-256color" ]] || [[ "$TERM" = "screen.xterm-256color" ]]; then
+  unset zle_bracketed_paste
+fi
+#(( $+TMUX )) && unset zle_bracketed_paste
 
 [ -f ~/.fzf.zsh ] && source ~/.fzf.zsh
-if command -v fasd 2>&1 >/dev/null; then
+if ex fasd; then
   eval "$(fasd --init auto)"
 fi