add completions submodule

.gitmodules

@@ -0,0 +1,3 @@
+[submodule "zsh/zsh-completions"]
+	path = zsh/zsh-completions
+	url = https://github.com/zsh-users/zsh-completions.git

zsh/.zshrc

@@ -8,10 +8,18 @@ setopt HIST_IGNORE_SPACE         # Do not record an event starting with a space.
 unsetopt HIST_SAVE_NO_DUPS         # Do not write a duplicate event to the history file.
 setopt SHARE_HISTORY             # Share history between all sessions.
 
+setopt AUTO_PUSHD           # Push the current directory visited on the stack.
+setopt PUSHD_IGNORE_DUPS    # Do not store duplicates in the stack.
+setopt PUSHD_SILENT         # Do not print the directory stack after pushd or popd.
+
+alias d='dirs -v'
+for index ({1..9}) alias "c$index"="cd +${index}"; unset index
+
 bindkey "^[[1;5C" forward-word
 bindkey "^[[1;5D" backward-word
 
 source $DOTFILES/zsh/completion.zsh
+fpath=($DOTFILES/zsh/zsh-completions/src $fpath)
 
 # make less more friendly for non-text input files, see lesspipe(1)
 [ -x /usr/bin/lesspipe ] && eval "$(SHELL=/bin/sh lesspipe)"