Changed the default behaviour to truncate whole directories.

README.md

@@ -279,11 +279,11 @@ to a certain length:
 
 To change the way how the current working directory is truncated, just set:
 
-    # truncate whole directories
+    # truncate the middle part
-    POWERLEVEL9K_SHORTEN_STRATEGY="complete_directories"
+    POWERLEVEL9K_SHORTEN_STRATEGY="truncate_middle"
     # truncate from right, leaving the first X characters untouched
     POWERLEVEL9K_SHORTEN_STRATEGY="truncate_from_right"
-    # default behaviour is to truncate the middle part of the directory
+    # default behaviour is to truncate whole directories
 
 In each case you have to specify the length you want to shorten the directory
 to. So in some cases `POWERLEVEL9K_SHORTEN_DIR_LENGTH` means characters, in 

powerlevel9k.zsh-theme

@@ -484,14 +484,14 @@ prompt_dir() {
   if [[ -n "$POWERLEVEL9K_SHORTEN_DIR_LENGTH" ]]; then
 
     case "$POWERLEVEL9K_SHORTEN_STRATEGY" in
-      complete_directories)
+      truncate_middle)
-        current_path="%$((POWERLEVEL9K_SHORTEN_DIR_LENGTH+1))(c:.../:)%${POWERLEVEL9K_SHORTEN_DIR_LENGTH}c"
+        current_path=$(pwd | sed -e "s,^$HOME,~," | sed -E "s/([^/]{$POWERLEVEL9K_SHORTEN_DIR_LENGTH})[^/]+([^/]{$POWERLEVEL9K_SHORTEN_DIR_LENGTH})\//\1\.\.\2\//g")
       ;;
       truncate_from_right)
         current_path=$(pwd | sed -e "s,^$HOME,~," | sed -E "s/([^/]{$POWERLEVEL9K_SHORTEN_DIR_LENGTH})[^/]+\//\1..\//g")
       ;;
       *)
-        current_path=$(pwd | sed -e "s,^$HOME,~," | sed -E "s/([^/]{$POWERLEVEL9K_SHORTEN_DIR_LENGTH})[^/]+([^/]{$POWERLEVEL9K_SHORTEN_DIR_LENGTH})\//\1\.\.\2\//g")
+        current_path="%$((POWERLEVEL9K_SHORTEN_DIR_LENGTH+1))(c:.../:)%${POWERLEVEL9K_SHORTEN_DIR_LENGTH}c"
       ;;
     esac