Broken border of tmux on iTerm can be caused by some setting.(tmux+iTerm2での表示の乱れについて)
![](https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEgBPE1KrKAIxuojH2AmlsoaU5M8lzeTVLnrRsD1v-mbOZX0mjiwni-3Xq-zVPGFit3tvAruDyjssMUQRkXzdYtlsE5cY_ebk-zPYtF1ac5lTi1DpdyE93nMMxAGZmt7Dk5vVpj2m6vkLwU/s400/%25E3%2582%25B9%25E3%2582%25AF%25E3%2583%25AA%25E3%2583%25BC%25E3%2583%25B3%25E3%2582%25B7%25E3%2583%25A7%25E3%2583%2583%25E3%2583%2588%25EF%25BC%25882011-04-04+7.19.22%25EF%25BC%2589.png)
I've been annoyed by broken border lines of tmux on iTerm2, but finally I figured out what causes this.
To fix it, turn off the chechk box of "Treat ambiguous-width characters as double width" in Terminal tab of "Edit profile".
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