Might need a patched font to get the fancy glyphs, e.g. Inconsolata for Powerline
In iTerm:
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use the patched font: Preferences > Profiles > Text > Regular Font and Non-ASCII Font
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don’t make questionable characters doublewidth: uncheck the “Treat ambiguous-width as double width” checkbox at Preferences > Profiles > Text > Double-Width Characters
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change terminal name: enter “xterm-256color” in Preferences > Profiles > Terminal > Report Terminal Type
