diff --git a/lib/completion.zsh b/lib/completion.zsh
index e0cdcf626..c54249c52 100644
--- a/lib/completion.zsh
+++ b/lib/completion.zsh
@@ -31,35 +31,20 @@ zstyle ':completion:*:*:*:*:processes' command "ps -u `whoami` -o pid,user,comm
 zstyle ':completion:*:cd:*' tag-order local-directories directory-stack path-directories
 cdpath=(.)
 
-# use /etc/hosts and known_hosts for hostname completion
-[ -r /etc/ssh/ssh_known_hosts ] && _global_ssh_hosts=(${${${${(f)"$(</etc/ssh/ssh_known_hosts)"}:#[\|]*}%%\ *}%%,*}) || _global_ssh_hosts=()
-[ -r ~/.ssh/known_hosts ] && _ssh_hosts=(${${${${(f)"$(<$HOME/.ssh/known_hosts)"}:#[\|]*}%%\ *}%%,*}) || _ssh_hosts=()
-[ -r ~/.ssh/config ] && _ssh_config=($(cat ~/.ssh/config | sed -ne 's/Host[=\t ]//p')) || _ssh_config=()
-[ -r /etc/hosts ] && : ${(A)_etc_hosts:=${(s: :)${(ps:\t:)${${(f)~~"$(</etc/hosts)"}%%\#*}##[:blank:]#[^[:blank:]]#}}} || _etc_hosts=()
-hosts=(
-  "$_ssh_config[@]"
-  "$_global_ssh_hosts[@]"
-  "$_ssh_hosts[@]"
-  "$_etc_hosts[@]"
-  "$HOST"
-  localhost
-)
-zstyle ':completion:*:hosts' hosts $hosts
-zstyle ':completion:*' users off
-
 # Use caching so that commands like apt and dpkg complete are useable
 zstyle ':completion::complete:*' use-cache 1
 zstyle ':completion::complete:*' cache-path $ZSH/cache/
 
 # Don't complete uninteresting users
 zstyle ':completion:*:*:*:users' ignored-patterns \
-        adm amanda apache avahi beaglidx bin cacti canna clamav daemon \
-        dbus distcache dovecot fax ftp games gdm gkrellmd gopher \
-        hacluster haldaemon halt hsqldb ident junkbust ldap lp mail \
-        mailman mailnull mldonkey mysql nagios \
-        named netdump news nfsnobody nobody nscd ntp nut nx openvpn \
-        operator pcap postfix postgres privoxy pulse pvm quagga radvd \
-        rpc rpcuser rpm shutdown squid sshd sync uucp vcsa xfs
+        adm amanda apache at avahi avahi-autoipd beaglidx bin cacti canna \
+        clamav daemon dbus distcache dnsmasq dovecot fax ftp games gdm \
+        gkrellmd gopher hacluster haldaemon halt hsqldb ident junkbust kdm \
+        ldap lp mail mailman mailnull man messagebus  mldonkey mysql nagios \
+        named netdump news nfsnobody nobody nscd ntp nut nx obsrun openvpn \
+        operator pcap polkitd postfix postgres privoxy pulse pvm quagga radvd \
+        rpc rpcuser rpm rtkit scard shutdown squid sshd statd svn sync tftp \
+        usbmux uucp vcsa wwwrun xfs
 
 # ... unless we really want to.
 zstyle '*' single-ignored show
diff --git a/plugins/battery/battery.plugin.zsh b/plugins/battery/battery.plugin.zsh
index e39cc5b8f..b16a75c5b 100644
--- a/plugins/battery/battery.plugin.zsh
+++ b/plugins/battery/battery.plugin.zsh
@@ -34,7 +34,11 @@ if [[ $(uname) == "Darwin" ]] ; then
   	local smart_battery_status="$(ioreg -rc "AppleSmartBattery")"
     if [[ $(echo $smart_battery_status | grep -c '^.*"ExternalConnected"\ =\ No') -eq 1 ]] ; then
       timeremaining=$(echo $smart_battery_status | grep '^.*"AvgTimeToEmpty"\ =\ ' | sed -e 's/^.*"AvgTimeToEmpty"\ =\ //')
-      echo "~$((timeremaining / 60)):$((timeremaining % 60))"
+      if [ $timeremaining -gt 720 ] ; then
+        echo "::"
+      else
+        echo "~$((timeremaining / 60)):$((timeremaining % 60))"
+      fi
     else
       echo "∞"
     fi
@@ -62,9 +66,19 @@ if [[ $(uname) == "Darwin" ]] ; then
 
 elif [[ $(uname) == "Linux"  ]] ; then
 
+  function battery_is_charging() {
+    ! [[ $(acpi 2&>/dev/null | grep -c '^Battery.*Discharging') -gt 0 ]]
+  }
+
+  function battery_pct() {
+    echo "$(acpi | cut -f2 -d ',' | tr -cd '[:digit:]')" 
+  }
+
   function battery_pct_remaining() {
-    if [[ $(acpi 2&>/dev/null | grep -c '^Battery.*Discharging') -gt 0 ]] ; then
-      echo "$(acpi | cut -f2 -d ',' | tr -cd '[:digit:]')" 
+    if [ ! $(battery_is_charging) ] ; then
+      battery_pct
+    else
+      echo "External Power"
     fi
   }
 
@@ -90,15 +104,6 @@ elif [[ $(uname) == "Linux"  ]] ; then
     fi
   }
   
-  function battery_pct() {
-    # todo for on linux
-  }
-  
-  function battery_is_charging() {
-    # todo on linux
-	false
-  }
-
 else
   # Empty functions so we don't cause errors in prompts
   function battery_pct_remaining() {
diff --git a/plugins/bundler/bundler.plugin.zsh b/plugins/bundler/bundler.plugin.zsh
index 9dfed61a4..df30ed7c7 100644
--- a/plugins/bundler/bundler.plugin.zsh
+++ b/plugins/bundler/bundler.plugin.zsh
@@ -6,7 +6,7 @@ alias bu="bundle update"
 
 # The following is based on https://github.com/gma/bundler-exec
 
-bundled_commands=(annotate berks cap capify cucumber foodcritic foreman guard jekyll kitchen knife middleman nanoc rackup rainbows rake rspec ruby shotgun spec spin spork strainer tailor taps thin thor unicorn unicorn_rails puma)
+bundled_commands=(annotate berks cap capify cucumber foodcritic foreman guard jekyll kitchen knife mailcatcher middleman nanoc rackup rainbows rake rspec ruby shotgun spec spin spork strainer tailor taps thin thor unicorn unicorn_rails puma)
 
 # Remove $UNBUNDLED_COMMANDS from the bundled_commands list
 for cmd in $UNBUNDLED_COMMANDS; do
diff --git a/plugins/debian/debian.plugin.zsh b/plugins/debian/debian.plugin.zsh
index 1e15487ba..28dfb82a5 100644
--- a/plugins/debian/debian.plugin.zsh
+++ b/plugins/debian/debian.plugin.zsh
@@ -217,3 +217,11 @@ kerndeb () {
         "$revision" kernel_image kernel_headers
 }
 
+# List packages by size
+function apt-list-packages {
+    dpkg-query -W --showformat='${Installed-Size} ${Package} ${Status}\n' | \
+    grep -v deinstall | \
+    sort -n | \
+    awk '{print $1" "$2}'
+}
+
diff --git a/plugins/dirhistory/dirhistory.plugin.zsh b/plugins/dirhistory/dirhistory.plugin.zsh
new file mode 100644
index 000000000..504d7ec14
--- /dev/null
+++ b/plugins/dirhistory/dirhistory.plugin.zsh
@@ -0,0 +1,132 @@
+## 
+#   Navigate directory history using ALT-LEFT and ALT-RIGHT. ALT-LEFT moves back to directories 
+#   that the user has changed to in the past, and ALT-RIGHT undoes ALT-LEFT.
+# 
+
+dirhistory_past=(`pwd`)
+dirhistory_future=()
+export dirhistory_past
+export dirhistory_future
+
+export DIRHISTORY_SIZE=30
+
+# Pop the last element of dirhistory_past. 
+# Pass the name of the variable to return the result in. 
+# Returns the element if the array was not empty,
+# otherwise returns empty string.
+function pop_past() {
+  eval "$1='$dirhistory_past[$#dirhistory_past]'"
+  if [[ $#dirhistory_past -gt 0 ]]; then
+    dirhistory_past[$#dirhistory_past]=()
+  fi
+}
+
+function pop_future() {
+  eval "$1='$dirhistory_future[$#dirhistory_future]'"
+  if [[ $#dirhistory_future -gt 0 ]]; then
+    dirhistory_future[$#dirhistory_future]=()
+  fi
+}
+
+# Push a new element onto the end of dirhistory_past. If the size of the array 
+# is >= DIRHISTORY_SIZE, the array is shifted
+function push_past() {
+  if [[ $#dirhistory_past -ge $DIRHISTORY_SIZE ]]; then
+    shift dirhistory_past
+  fi
+  if [[ $#dirhistory_past -eq 0 || $dirhistory_past[$#dirhistory_past] != "$1" ]]; then
+    dirhistory_past+=($1)
+  fi
+}
+
+function push_future() {
+  if [[ $#dirhistory_future -ge $DIRHISTORY_SIZE ]]; then
+    shift dirhistory_future
+  fi
+  if [[ $#dirhistory_future -eq 0 || $dirhistory_futuret[$#dirhistory_future] != "$1" ]]; then
+    dirhistory_future+=($1)
+  fi
+}
+
+# Called by zsh when directory changes
+function chpwd() {
+  push_past `pwd`
+  # If DIRHISTORY_CD is not set...
+  if [[ -z "${DIRHISTORY_CD+x}" ]]; then
+    # ... clear future.
+    dirhistory_future=()
+  fi
+}
+
+function dirhistory_cd(){
+  DIRHISTORY_CD="1"
+  cd $1
+  unset DIRHISTORY_CD
+}
+
+# Move backward in directory history
+function dirhistory_back() {
+  local cw=""
+  local d=""
+  # Last element in dirhistory_past is the cwd.
+
+  pop_past cw 
+  if [[ "" == "$cw" ]]; then
+    # Someone overwrote our variable. Recover it.
+    dirhistory_past=(`pwd`)
+    return
+  fi
+
+  pop_past d
+  if [[ "" != "$d" ]]; then
+    dirhistory_cd $d
+    push_future $cw
+  else
+    push_past $cw
+  fi
+}
+
+
+# Move forward in directory history
+function dirhistory_forward() {
+  local d=""
+
+  pop_future d
+  if [[ "" != "$d" ]]; then
+    dirhistory_cd $d
+    push_past $d
+  fi
+}
+
+
+# Bind keys to history navigation
+function dirhistory_zle_dirhistory_back() {
+  # Erase current line in buffer
+  zle kill-buffer
+  dirhistory_back 
+  zle accept-line
+}
+
+function dirhistory_zle_dirhistory_future() {
+  # Erase current line in buffer
+  zle kill-buffer
+  dirhistory_forward
+  zle accept-line
+}
+
+zle -N dirhistory_zle_dirhistory_back
+# xterm in normal mode
+bindkey "\e[3D" dirhistory_zle_dirhistory_back
+bindkey "\e[1;3D" dirhistory_zle_dirhistory_back
+# Putty:
+bindkey "\e\e[D" dirhistory_zle_dirhistory_back
+# GNU screen:
+bindkey "\eO3D" dirhistory_zle_dirhistory_back
+
+zle -N dirhistory_zle_dirhistory_future
+bindkey "\e[3C" dirhistory_zle_dirhistory_future
+bindkey "\e[1;3C" dirhistory_zle_dirhistory_future
+bindkey "\e\e[C" dirhistory_zle_dirhistory_future
+bindkey "\eO3C" dirhistory_zle_dirhistory_future
+
+
diff --git a/plugins/ssh-agent/ssh-agent.plugin.zsh b/plugins/ssh-agent/ssh-agent.plugin.zsh
index a1e64ad0f..2fb8d5462 100644
--- a/plugins/ssh-agent/ssh-agent.plugin.zsh
+++ b/plugins/ssh-agent/ssh-agent.plugin.zsh
@@ -27,7 +27,7 @@
 #   Florent Thoumie and Jonas Pfenniger
 #
 
-local _plugin__ssh_env=$HOME/.ssh/environment-$HOST
+local _plugin__ssh_env
 local _plugin__forwarding
 
 function _plugin__start_agent()
@@ -42,12 +42,20 @@ function _plugin__start_agent()
   . ${_plugin__ssh_env} > /dev/null
 
   # load identies
-  zstyle -a :omz:plugins:ssh-agent identities identities 
+  zstyle -a :omz:plugins:ssh-agent identities identities
   echo starting ssh-agent...
 
   /usr/bin/ssh-add $HOME/.ssh/${^identities}
 }
 
+# Get the filename to store/lookup the environment from
+if (( $+commands[scutil] )); then
+  # It's OS X!
+  _plugin__ssh_env="$HOME/.ssh/environment-$(scutil --get ComputerName)"
+else
+  _plugin__ssh_env="$HOME/.ssh/environment-$HOST"
+fi
+
 # test if agent-forwarding is enabled
 zstyle -b :omz:plugins:ssh-agent agent-forwarding _plugin__forwarding
 if [[ ${_plugin__forwarding} == "yes" && -n "$SSH_AUTH_SOCK" ]]; then
diff --git a/plugins/svn/svn.plugin.zsh b/plugins/svn/svn.plugin.zsh
index 4f008ba4e..ef6da5bd3 100644
--- a/plugins/svn/svn.plugin.zsh
+++ b/plugins/svn/svn.plugin.zsh
@@ -9,7 +9,7 @@ function svn_prompt_info() {
       _DISPLAY=$(svn_get_repo_name)
     fi
     echo "$ZSH_PROMPT_BASE_COLOR$ZSH_THEME_SVN_PROMPT_PREFIX\
-$ZSH_THEME_REPO_NAME_COLOR$_DISPLAY$ZSH_PROMPT_BASE_COLOR$ZSH_THEME_SVN_PROMPT_SUFFIX$ZSH_PROMPT_BASE_COLOR$(svn_dirty)$ZSH_PROMPT_BASE_COLOR"
+$ZSH_THEME_REPO_NAME_COLOR$_DISPLAY$ZSH_PROMPT_BASE_COLOR$ZSH_THEME_SVN_PROMPT_SUFFIX$ZSH_PROMPT_BASE_COLOR$(svn_dirty)$(svn_dirty_pwd)$ZSH_PROMPT_BASE_COLOR"
     unset _DISPLAY
   fi
 }
@@ -74,3 +74,22 @@ function svn_dirty_choose() {
 function svn_dirty() {
   svn_dirty_choose $ZSH_THEME_SVN_PROMPT_DIRTY $ZSH_THEME_SVN_PROMPT_CLEAN
 }
+
+function svn_dirty_choose_pwd () {
+  if in_svn; then
+    root=`pwd`
+    if $(svn status $root 2> /dev/null | grep -Eq '^\s*[ACDIM!?L]'); then
+      # Grep exits with 0 when "One or more lines were selected", return "dirty".
+      echo $1
+    else
+      # Otherwise, no lines were found, or an error occurred. Return clean.
+      echo $2
+    fi
+  fi
+}
+
+function svn_dirty_pwd () {
+  svn_dirty_choose_pwd $ZSH_THEME_SVN_PROMPT_DIRTY_PWD $ZSH_THEME_SVN_PROMPT_CLEAN_PWD
+}
+
+