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diff --git a/_zsh/50-vi-mode.zsh b/_zsh/50-vi-mode.zsh
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+++ b/_zsh/50-vi-mode.zsh
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+#
+# zsh/vi-mode.zsh
+#
+# Credits:
+# https://github.com/robbyrussell/oh-my-zsh/blob/master/plugins/vi-mode/vi-mode.plugin.zsh
+# 2015-11-18
+#
+
+# Updates editor information when the keymap changes.
+function zle-keymap-select() {
+    zle reset-prompt
+    zle -R
+}
+
+# Ensure that the prompt is redrawn when the terminal size changes.
+TRAPWINCH() {
+    zle && { zle reset-prompt; zle -R }
+}
+
+zle -N zle-keymap-select
+zle -N edit-command-line
+
+
+bindkey -v
+
+# allow v to edit the command line (standard behaviour)
+autoload -Uz edit-command-line
+bindkey -M vicmd 'v' edit-command-line
+
+# allow ctrl-p, ctrl-n for navigate history (standard behaviour)
+bindkey '^P' up-history
+bindkey '^N' down-history
+
+# allow ctrl-h, ctrl-w, ctrl-? for char and word deletion (standard behaviour)
+bindkey '^?' backward-delete-char
+bindkey '^h' backward-delete-char
+bindkey '^w' backward-kill-word
+
+# if mode indicator wasn't setup by theme, define default
+if [[ "$MODE_INDICATOR" == "" ]]; then
+    MODE_INDICATOR="%{$fg_bold[red]%}<%{$fg[red]%}<<%{$reset_color%}"
+fi
+
+function vi_mode_prompt_info() {
+    echo "${${KEYMAP/vicmd/$MODE_INDICATOR}/(main|viins)/}"
+}
+
+# define right prompt, if it wasn't defined by a theme
+if [[ "$RPS1" == "" && "$RPROMPT" == "" ]]; then
+    RPS1='$(vi_mode_prompt_info)'
+fi
+
+# vim: set ts=8 sw=4 tw=0 fenc=utf-8 ft=zsh: #