# 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 -R; zle reset-prompt }
}

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' history-beginning-search-backward
bindkey '^N' history-beginning-search-forward
bindkey '^K' kill-whole-line

# 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

# allow ctrl-r to perform backward search in history
bindkey '^r' history-incremental-search-backward

# allow ctrl-a and ctrl-e to move to beginning/end of line
bindkey '^a' beginning-of-line
bindkey '^e' end-of-line