plugins: Add fasd plugin

Fasd offers quick access to files and directories. It is inspired by
tools like autojump, z and v. Fasd keeps track of files and
directories you have accessed, so that you can quickly reference them
in the command line

This plugin sets up fasd to use safe_command_prompt handling of
oh-my-bash to avoid conflicts with fasd's normal bash prompt handling.

More information about fasd can be found here:
https://github.com/clvv/fasd.

plugins/fasd/fasd.plugin.sh

@@ -0,0 +1,23 @@
+#!/usr/bin/env sh
+
+# Initialize fasd, without setting up the prompt hook, which
+# we want to be handled by oh-my-bash.
+
+_fasd_prompt_func() {
+  [ -z "$_FASD_SINK" ] && _FASD_SINK=/dev/null
+  eval "fasd --proc \$(fasd --sanitize \$(history 1 | \\
+    sed "s/^[ ]*[0-9]*[ ]*//"))" >> "$_FASD_SINK" 2>&1
+}
+
+function _install_fasd() {
+  type fasd >/dev/null 2>&1
+  if [ "$?" == "0" ]; then
+    eval "$(fasd --init posix-alias bash-ccomp bash-ccomp-install)"
+    _omb_util_add_prompt_command _fasd_prompt_func
+  else
+    echo "fasd not found, plugin not activated."
+  fi
+}
+
+
+_install_fasd