autoload history-search-end
zle -N history-beginning-search-backward-end history-search-end
zle -N history-beginning-search-forward-end history-search-end
bindkey "^[[A" history-beginning-search-backward-end
bindkey "^[[B" history-beginning-search-forward-end
bindkey "^[OA" history-beginning-search-backward-end
bindkey "^[OB" history-beginning-search-forward-end

bindkey -M viins '^R' history-incremental-search-backward
bindkey -M vicmd '^R' history-incremental-search-backward
bindkey -M vicmd '/' history-incremental-search-backward
bindkey -M vicmd '?' history-incremental-search-forward
bindkey -rM viins '^[/'

bindkey "^?" backward-delete-char
bindkey "^H" backward-delete-char
bindkey "^U" backward-kill-line

bindkey "^[[3~" delete-char