One of my pet peeves about wordpress is that because it’s based on PHP and MySQL it doesn’t like backslash characters at all. It just eats them up and screws up your post. But I’ve found a simple answer. Use numeric entities instead. Just type in \ or \ to get a nice \backslash.
A top tip from the zsh book:
autoload -U edit-command-line zle -N edit-command-line bindkey 'ee' edit-command-line
Binds M-e to “stick this command line in your text editor.”