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From: Bart Schaefer <schaefer@brasslantern.com>
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Date: Fri, 6 Mar 2015 23:20:24 -0800
In-Reply-To: <54FA731B.8050800@pobox.com>
Comments: In reply to Andrew Janke <janke@pobox.com>
        "FAQ title bar answer using chpwd()" (Mar  6, 10:40pm)
References: <54FA731B.8050800@pobox.com>
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To: Andrew Janke <janke@pobox.com>, zsh-workers@zsh.org
Subject: Re: FAQ title bar answer using chpwd()
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On Mar 6, 10:40pm, Andrew Janke wrote:
}
} http://zsh.sourceforge.net/FAQ/zshfaq03.html#l23
} 
} Answer 3.6 suggests using chpwd() to emit terminal control sequences to 
} update the title bar for Apple's Terminal.app. This probably isn't the 
} right place to do it, because cd's can happen inside functions, 
} pipelines, and so on whose output is going to be captured for use 
} elsewhere. The terminal control sequences will contaminate the captured 
} output instead of going to the terminal.

If you've actually examined the FAQ example, you'll see

  [[ -t 1 ]] || return

which means to do nothing if the standard output is not a terminal.

That's a perfectly reasonable solution to the issue described here:

} https://github.com/robbyrussell/oh-my-zsh/issues/3524

In short, the FAQ answer is correct and whoever created the chpwd to
which that issue refers, has coded it wrong.