[Fix sorin-ionescu#290] Add fish shell style PWD to sorin theme

modules/prompt/functions/prompt_sorin_setup

@@ -11,10 +11,24 @@
 # Load dependencies.
 pmodload 'helper'
 
+function prompt_sorin_pwd {
+  local pwd="${PWD/#$HOME/~}"
+
+  if [[ "$pwd" == (#m)[/~] ]]; then
+    _prompt_sorin_pwd="$MATCH"
+  else
+    _prompt_sorin_pwd="${${(@j:/:M)${(@s:/:)pwd}##.#?}:h}/${pwd:t}"
+  fi
+}
+
 function prompt_sorin_precmd {
   setopt LOCAL_OPTIONS
   unsetopt XTRACE KSH_ARRAYS
 
+  # Format PWD.
+  prompt_sorin_pwd
+
+  # Get Git repository information.
   if (( $+functions[git-info] )); then
     git-info
   fi
@@ -49,11 +63,11 @@ function prompt_sorin_setup {
   zstyle ':prezto:module:git' unmerged ' %%B%F{yellow}═%f%%b'
   zstyle ':prezto:module:git' untracked ' %%B%F{white}◼%f%%b'
   zstyle ':prezto:module:git' info \
-    'prompt'  ' %F{blue}git%f$(coalesce "%b" "%p" "%c")%s' \
+    'prompt' ' %F{blue}git%f$(coalesce "%b" "%p" "%c")%s' \
     'rprompt' '%A%B%S%a%d%m%r%U%u'
 
   # Define prompts.
-  PROMPT='%F{cyan}%1~%f${git_info:+${(e)git_info[prompt]}}%(!. %B%F{red}#%f%b.)${editor_info[keymap]} '
+  PROMPT='%F{cyan}${_prompt_sorin_pwd}%f${git_info:+${(e)git_info[prompt]}}%(!. %B%F{red}#%f%b.)${editor_info[keymap]} '
   RPROMPT='${editor_info[overwrite]}%(?:: %F{red}⏎%f)${VIM:+" %B%F{green}V%f%b"}${git_info[rprompt]}'
   SPROMPT='zsh: correct %F{red}%R%f to %F{green}%r%f [nyae]? '
 }