trapd00r: simplify logic and optimize for loop

This version splits the `$PWD` by the slashes and prints the path
directory by directory, printing the separators as before.

themes/trapd00r.zsh-theme

@@ -50,9 +50,8 @@ zsh_path() {
     17  '%F{202}'   18  '%F{166}'
   )
 
-  local c i=1
-  for c (${(s::)PWD}); do
-    if [[ $c = "/" ]]; then
+  local dir i=1
+  for dir (${(s:/:)PWD}); do
     if [[ $i -eq 1 ]]; then
       if [[ $colors -ge 256 ]]; then
         print -Pn "%F{065}%B /%b"
@@ -68,12 +67,11 @@ zsh_path() {
     fi
 
     (( i++ ))
-    else
+
     if [[ $colors -ge 256 ]]; then
-        print -Pn "%F{065}$c"
+      print -Pn "%F{065}$dir"
     else
-        print -Pn "%F{blue}$c"
-      fi
+      print -Pn "%F{blue}$dir"
     fi
   done
   print -Pn "%f"