Enable shortening of directories and VCS branches in zsh.

.zshrc

@@ -40,6 +40,13 @@ if [[ -e /usr/share/powerlevel9k/powerlevel9k.zsh-theme ]]; then
     POWERLEVEL9K_LEFT_PROMPT_ELEMENTS=( os_icon history status root_indicator context dir vcs virtualenv )
     POWERLEVEL9K_RIGHT_PROMPT_ELEMENTS=( background_jobs )
     POWERLEVEL9K_DIR_SHOW_WRITABLE=true
+    POWERLEVEL9K_SHORTEN_DIR_LENGTH=1
+    POWERLEVEL9K_SHORTEN_DELIMITER=
+    POWERLEVEL9K_SHORTEN_STRATEGY=truncate_to_unique
+    POWERLEVEL9K_VCS_SHORTEN_LENGTH=4
+    POWERLEVEL9K_VCS_SHORTEN_MIN_LENGTH=11
+    POWERLEVEL9K_VCS_SHORTEN_STRATEGY=truncate_from_right
+    POWERLEVEL9K_VCS_SHORTEN_DELIMITER=..
     POWERLEVEL9K_STATUS_OK=false
     DEFAULT_USER=nik
     VIRTUAL_ENV_DISABLE_PROMPT=1