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Re: "read -n" miscounts if typed characters are control chars


From: Chet Ramey
Subject: Re: "read -n" miscounts if typed characters are control chars
Date: Thu, 14 Apr 2005 15:55:10 -0400
User-agent: Mozilla Thunderbird 1.0.2 (Macintosh/20050317)

address@hidden wrote:

> Bash Version: 2.05
> Patch Level: 8
> Release Status: release
> 
> Description:
>       if "read -n" is used to read control character input from
>       a tty, it will miscount the input characters by a factor
>       of two.

Thanks for the report.  The bug still exists in the current release,
but it's an easy fix.

Note that this happens only for ^A, not any control character.  The
shell uses ^A for internal quoting, and has to treat it specially on
input.  That's the reason for the doubled counts.

Chet

-- 
``The lyf so short, the craft so long to lerne.'' - Chaucer
( ``Discere est Dolere'' -- chet )
                                                Live...Laugh...Love
Chet Ramey, ITS, CWRU    address@hidden    http://cnswww.cns.cwru.edu/~chet/





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