Revert "[#129, #211] Remove z"

This reverts commit b967c50faf.

.gitmodules

@@ -7,3 +7,6 @@
 [submodule "modules/completion/external"]
 	path = modules/completion/external
 	url = https://github.com/zsh-users/zsh-completions.git
+[submodule "modules/z/external"]
+	path = modules/z/external
+	url = https://github.com/rupa/z.git

modules/fasd/README.md

@@ -1,39 +0,0 @@
-Fasd
-====
-
-[Fasd][1] is a command-line productivity booster, inspired by tools like
-[autojump][2], [z][3] and [v][4], it offers quick access to files and
-directories by keeping track of files and directories  that were previously
-accessed.
-
-For completion to work, this module must be loaded **after** the *completion*
-module.
-
-The Prezto Fasd configuration differs from the default. The default aliases have
-been disabled.
-
-Aliases
--------
-
-  - `j` changes the current working directory interactively.
-
-Completion
-----------
-
-Type `,`, `f,`, `d,` in front of a comma-separated query or type `,,`,  `,,f`,
-`,,d` at the end of a comma-separated query then hit <kbd>tab</kbd>.
-
-Authors
--------
-
-*The authors of this module should be contacted via the [issue tracker][5].*
-
-  - [Wei Dai](https://github.com/clvv)
-  - [Sorin Ionescu](https://github.com/sorin-ionescu)
-
-[1]: https://github.com/clvv/fasd
-[2]: https://github.com/joelthelion/autojump
-[3]: https://github.com/rupa/z
-[4]: https://github.com/rupa/v
-[5]: https://github.com/sorin-ionescu/prezto/issues
-

modules/fasd/init.zsh

@@ -1,54 +0,0 @@
-#
-# Maintains a frequently used file and directory list for fast access.
-#
-# Authors:
-#   Wei Dai <x@wei23.net>
-#   Sorin Ionescu <sorin.ionescu@gmail.com>
-#
-
-# Load dependencies.
-pmodload 'editor'
-
-# Return if requirements are not found.
-if (( ! $+commands[fasd] )); then
-  return 1
-fi
-
-#
-# Initialization
-#
-
-cache_file="${0:h}/cache.zsh"
-if [[ "${commands[fasd]}" -nt "$cache_file" || ! -s "$cache_file"  ]]; then
-  # Set the base init arguments.
-  init_args=(zsh-hook)
-
-  # Set fasd completion init arguments, if applicable.
-  if zstyle -t ':prezto:module:completion' loaded; then
-    init_args+=(zsh-ccomp zsh-ccomp-install zsh-wcomp zsh-wcomp-install)
-  fi
-
-  # Cache init code.
-  fasd --init "$init_args[@]" >! "$cache_file" 2> /dev/null
-fi
-
-source "$cache_file"
-
-unset cache_file init_args
-
-function fasd_cd {
-  local fasd_ret="$(fasd -d "$@")"
-  if [[ -d "$fasd_ret" ]]; then
-    cd "$fasd_ret"
-  else
-    print "$fasd_ret"
-  fi
-}
-
-#
-# Aliases
-#
-
-# Changes the current working directory interactively.
-alias j='fasd_cd -i'
-

modules/z/README.md

@@ -0,0 +1,21 @@
+Z
+=
+
+Integrates [z][1] into Prezto, which maintains a frequently used directory
+list for fast directory changes.
+
+Aliases
+-------
+
+  - `j` changes the current working directory to the most *frecent* match.
+
+Authors
+-------
+
+*The authors of this module should be contacted via the [issue tracker][2].*
+
+  - [Sorin Ionescu](https://github.com/sorin-ionescu)
+
+[1]: https://github.com/rupa/z
+[2]: https://github.com/sorin-ionescu/prezto/issues
+

modules/z/init.zsh

@@ -0,0 +1,19 @@
+#
+# Maintains a frequently used directory list for fast directory changes.
+#
+# Authors:
+#   Sorin Ionescu <sorin.ionescu@gmail.com>
+#
+
+# Set the directory changing command.
+_Z_CMD='j'
+
+# Prevent symbolic link resolution.
+_Z_NO_RESOLVE_SYMLINKS=1
+
+# Source module files.
+source "${0:h}/external/z.sh"
+
+# Cleanup.
+unset _Z_{CMD,NO_RESOLVE_SYMLINKS}
+