Might need a patched font to get the fancy glyphs, e.g. Inconsolata for Powerline

In iTerm:

  • use the patched font: Preferences > Profiles > Text > Regular Font and Non-ASCII Font

  • don’t make questionable characters doublewidth: uncheck the “Treat ambiguous-width as double width” checkbox at Preferences > Profiles > Text > Double-Width Characters

  • change terminal name: enter “xterm-256color” in Preferences > Profiles > Terminal > Report Terminal Type