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From: Bart Schaefer <schaefer@brasslantern.com>
Message-Id: <150513104350.ZM28203@torch.brasslantern.com>
Date: Wed, 13 May 2015 10:43:50 -0700
In-Reply-To: <20150513161411.GA4834@lorien.comfychair.org>
Comments: In reply to Danek Duvall <duvall@comfychair.org>
        "zsh doesn't understand some multibyte characters" (May 13,  9:14am)
References: <20150513161411.GA4834@lorien.comfychair.org>
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To: Danek Duvall <duvall@comfychair.org>, zsh-users@zsh.org
Subject: Re: zsh doesn't understand some multibyte characters
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On May 13,  9:14am, Danek Duvall wrote:
} Subject: zsh doesn't understand some multibyte characters
}
} Perhaps this is just on Solaris, I dunno. But for some multibyte
} characters [...] if I move the cursor back over them or delete back
} over them, zsh gets confused and moves two positions instead of one
}
} I'll note that the same thing happens with all the other shells on
} Solaris [... ] Where else should I be looking for the problem?

This sounds like the WCWIDTH() macro or function is returning the wrong
value for some characters.

If you are compiling your own zsh, can you (a) check whether config.h
defines BROKEN_WCWIDTH, and (b) if it does not, try defining it and
recompile to see if that makes any difference?