sorin prompt improvements - rbenv/pyenv support

cleaned up unnecessary prompt async functions

autoload async

rewrote sorin prompt to use zsh-async

removing dead variables

actually working now

moving code for a saner diff

fixed last async issues

modules/prompt/functions/prompt_sorin_setup

@@ -1,11 +1,17 @@
 #
 # A simple theme that displays relevant, contextual information.
 #
+# - Git branch
+# - Python environment
+# - Ruby environment (gemset)
+#
 # Authors:
 #   Sorin Ionescu <sorin.ionescu@gmail.com>
+#   Matthew Crenshaw <sgt@squig.gs>
 #
 # Screenshots:
 #   http://i.imgur.com/nrGV6pg.png
+#   http://i.imgur.com/w2ein8H.png
 #
 
 #
@@ -32,36 +38,38 @@
 # Load dependencies.
 pmodload 'helper'
 
-prompt_sorin_git_info() {
-  if (( _prompt_sorin_precmd_async_pid > 0 )); then
-    # Append Git status.
-    if [[ -s "$_prompt_sorin_precmd_async_data" ]]; then
-      alias typeset='typeset -g'
-      source "$_prompt_sorin_precmd_async_data"
-      RPROMPT+='${git_info:+${(e)git_info[status]}}'
-      unalias typeset
-    fi
-
-    # Reset PID.
-    _prompt_sorin_precmd_async_pid=0
-
-    # Redisplay prompt.
-    zle && zle reset-prompt
+function _prompt_sorin_async_job {
+  prompt_sorin_style
+  local output=''
+  builtin cd -q $1
+  if (( $+functions[python-info] )); then
+    python-info
+    output+=" ${python_info:+${(e)python_info[virtualenv]}}"
+  fi
+  if (( $+functions[ruby-info] )); then
+    ruby-info
+    output+=" ${ruby_info:+${(e)ruby_info[version]}}"
   fi
-}
-
-function prompt_sorin_precmd_async {
-  # Get Git repository information.
   if (( $+functions[git-info] )); then
     git-info
-    typeset -p git_info >! "$_prompt_sorin_precmd_async_data"
+    output+=" ${git_info:+${(e)git_info[status]}}"
   fi
+  print $output
+}
+
+function _prompt_sorin_callback {
+  local job=$1 code=$2 output=$3 exec_time=$4
 
-  # Signal completion to parent process.
-  kill -WINCH $$
+  if [[ -n $output ]]; then
+    # Append to rprompt
+    RPROMPT+=$output
+
+    # Redisplay prompt.
+    zle && zle reset-prompt
+  fi
 }
 
-function prompt_sorin_precmd {
+function _prompt_sorin_precmd {
   setopt LOCAL_OPTIONS
   unsetopt XTRACE KSH_ARRAYS
 
@@ -71,30 +79,46 @@ function prompt_sorin_precmd {
   # Define prompts.
   RPROMPT='${editor_info[overwrite]}%(?:: %F{1}⏎%f)${VIM:+" %B%F{6}V%f%b"}'
 
-  # Kill the old process of slow commands if it is still running.
-  if (( _prompt_sorin_precmd_async_pid > 0 )); then
-    kill -KILL "$_prompt_sorin_precmd_async_pid" &>/dev/null
-  fi
+  # Kill any currently running async jobs
+  async_flush_jobs 'prompt_sorin'
 
-  # Compute slow commands in the background.
-  trap prompt_sorin_git_info WINCH
-  prompt_sorin_precmd_async &!
-  _prompt_sorin_precmd_async_pid=$!
+  # We need the worker's env to be up to date, so here we are restarting the worker
+  async_stop_worker 'prompt_sorin'
+  async_start_worker 'prompt_sorin' -n -u
+  async_register_callback 'prompt_sorin' _prompt_sorin_callback
+
+  # Kick off async jobs
+  async_job 'prompt_sorin' _prompt_sorin_async_job "$(pwd)"
 }
 
 function prompt_sorin_setup {
   setopt LOCAL_OPTIONS
   unsetopt XTRACE KSH_ARRAYS
   prompt_opts=(cr percent subst)
-  _prompt_sorin_precmd_async_pid=0
-  _prompt_sorin_precmd_async_data="${TMPPREFIX}-prompt_sorin_data"
 
   # Load required functions.
   autoload -Uz add-zsh-hook
+  autoload -Uz async && async
+
+  # Start async worker
+  # async_start_worker 'prompt_sorin' -n -u
+
+  # Register callback
+  # async_register_callback 'prompt_sorin' _prompt_sorin_callback
 
   # Add hook for calling git-info before each command.
-  add-zsh-hook precmd prompt_sorin_precmd
+  add-zsh-hook precmd _prompt_sorin_precmd
+
+  # Apply styles
+  prompt_sorin_style
 
+  # Define prompts.
+  PROMPT='${SSH_TTY:+"%F{9}%n%f%F{7}@%f%F{3}%m%f "}%F{4}${_prompt_sorin_pwd}%(!. %B%F{1}#%f%b.)${editor_info[keymap]} '
+  RPROMPT=''
+  SPROMPT='zsh: correct %F{1}%R%f to %F{2}%r%f [nyae]? '
+}
+
+function prompt_sorin_style {
   # Set editor-info parameters.
   zstyle ':prezto:module:editor:info:completing' format '%B%F{7}...%f%b'
   zstyle ':prezto:module:editor:info:keymap:primary' format ' %B%F{1}❯%F{3}❯%F{2}❯%f%b'
@@ -119,10 +143,11 @@ function prompt_sorin_setup {
   zstyle ':prezto:module:git:info:keys' format \
     'status' '$(coalesce "%b" "%p" "%c")%s%A%B%S%a%d%m%r%U%u'
 
-  # Define prompts.
-  PROMPT='${SSH_TTY:+"%F{9}%n%f%F{7}@%f%F{3}%m%f "}%F{4}${_prompt_sorin_pwd}%(!. %B%F{1}#%f%b.)${editor_info[keymap]} '
-  RPROMPT=''
-  SPROMPT='zsh: correct %F{1}%R%f to %F{2}%r%f [nyae]? '
+  # Set ruby-info parameters.
+  zstyle ':prezto:module:ruby:info:version' format ' %F{4}rbenv%f:%F{2}%v%f'
+
+  # Set python-info parameters.
+  zstyle ':prezto:module:python:info:virtualenv' format ' %F{4}pyenv%f:%F{2}%v%f'
 }
 
 function prompt_sorin_preview {