clean up zsh syntax

grc.zsh

@@ -1,7 +1,9 @@
-if [[ "$TERM" != dumb ]] && (( $+commands[grc] )) ; then
+if [[ "$TERM" = dumb ]] || (( ! $+commands[grc] )); then
+    return
+fi
 
-  # Supported commands
-  cmds=(
+# Supported commands
+cmds=(
   as
   ant
   blkid
@@ -60,6 +62,7 @@ if [[ "$TERM" != dumb ]] && (( $+commands[grc] )) ; then
   semanage
   sensors
   showmount
+  sockstat
   ss
   stat
   sysctl
@@ -72,17 +75,15 @@ if [[ "$TERM" != dumb ]] && (( $+commands[grc] )) ; then
   vmstat
   wdiff
   whois
-    sockstat
-  )
+)
 
-  # Set alias for available commands.
-  for cmd in $cmds ; do
+# Set alias for available commands.
+for cmd in $cmds ; do
   if (( $+commands[$cmd] )) ; then
-      alias $cmd="grc $(whence $cmd)"
+    alias $cmd="grc --colour=auto $commands[$cmd]"
   fi
-  done
+done
 
-  # Clean up variables
-  unset cmds cmd
-fi
+# Clean up variables
+unset cmds cmd