From a8667fdb91efb9c61e89b7a4843618bc38dbf967 Mon Sep 17 00:00:00 2001
From: Adam Goldsmith <adam@adamgoldsmith.name>
Date: Mon, 15 Feb 2016 11:24:14 -0500
Subject: [PATCH] Add some custom functions to input module

 * ... -> ../.. expansion
 * sudo prefix
 * bind ^H to backward-kill-word
---
 modules/input/init.zsh | 23 +++++++++++++++++++++++
 1 file changed, 23 insertions(+)

diff --git a/modules/input/init.zsh b/modules/input/init.zsh
index a1f9458..bccd2bb 100644
--- a/modules/input/init.zsh
+++ b/modules/input/init.zsh
@@ -95,3 +95,26 @@ zle-line-finish() {
 }
 zle -N zle-line-init
 zle -N zle-line-finish
+
+# Expands ... to ../..
+function expand-dot-to-parent-directory-path {
+  if [[ $LBUFFER = *.. ]]; then
+    LBUFFER+='/..'
+  else
+    LBUFFER+='.'
+  fi
+}
+zle -N expand-dot-to-parent-directory-path
+bindkey -M emacs "." expand-dot-to-parent-directory-path
+
+# Inserts 'sudo ' at the beginning of the line.
+function prepend-sudo() {
+  if [[ "$BUFFER" != su(do|)\ * ]]; then
+    BUFFER="sudo $BUFFER"
+    (( CURSOR += 5 ))
+  fi
+}
+zle -N prepend-sudo
+bindkey "^X^S" prepend-sudo
+
+bindkey '^H' backward-kill-word