Why is the width of `~` different than `➜` on iTerm2 when using zsh with spaceship-prompt?
Ok, found what’s going on... SPACESHIP_CHAR_SYMBOL is set to ➜ (Heavy Round-Tipped Rightwards Arrow, unicode U+279C) by default vs → (Rightwards Arrow, unicode U+2192) which has the right width. PR in the making.

Submitted a PR to spaceship-prompt.