zsh: cleanup command lookup

brethil_dotfile.sh

@@ -18,19 +18,19 @@ antibody bundle < "$DOTFILES/antibody_plugins.txt"
 source $DOTFILES/completion_style.zsh
 source $DOTFILES/extras/fzf-tab-config.zsh
 
-if command -vp fd >/dev/null; then
+if [[ $+commands[fd] ]]; then
   export FZF_CTRL_T_COMMAND='fd'
 else
   export FZF_CTRL_T_COMMAND='find'
 fi
 export FZF_CTRL_T_OPTS=" --preview-window=right,60% --preview \"bash -c 'if [[ -d \"{}\" ]]; then tree -C \"{}\"; else bat --style=plain --color=always \"{}\"; fi'\" --bind 'ctrl-/:change-preview-window(right,70%|down,40%,border-horizontal|hidden|right)'"
 
-if [[ "$(command -v systemctl)" ]]; then
+if [[ $+commands[systemctl] ]]; then
   antibody bundle robbyrussell/oh-my-zsh path:plugins/systemd
 fi
-if [[ "$(command -v pacman)" ]]; then
+if [[ $+commands[pacman] ]]; then
   antibody bundle robbyrussell/oh-my-zsh path:plugins/archlinux
-elif [[ "$(command -v apt-get)" ]]; then
+elif [[ $+commands[apt-get] ]]; then
   antibody bundle robbyrussell/oh-my-zsh path:plugins/debian
 fi
 
@@ -82,12 +82,8 @@ export ZSH_AUTOSUGGEST_COMPLETION_IGNORE='* \#*' # prevent completion for commen
 
 # less options
 export LESS='-xRF-j12' #  -j12: displays 12 lines before search results with / and ?
-if [[ "$(command -v bat)" || "$(command -v batcat)" ]]; then
-    if [[ "$(command -v bat)" ]]; then
-      cmd=bat
-    else
-      cmd=batcat
-    fi
+if [[ $+commands[bat] || $+commands[batcat] ]]; then
+    if [[ $+commands[bat] ]]; then cmd=bat else cmd=batcat fi
 
     alias cat=$cmd
     export PAGER=$cmd