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Is "read -AE" buggy?

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From: Bart Schaefer <schaefer@xxxxxxxxxxxxxxxx>
To: zsh-workers@xxxxxxx
Subject: Is "read -AE" buggy?
Date: Tue, 23 Aug 2011 00:18:27 -0700
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Via fooling around with the "wc and leading spaces" thread on -users:

schaefer<535> wc config.modules | read -AE foo
64
461
4569
config.modules
64
461
4569
config.modules

Why did it print everything twice?  Doesn't happen without -A:

schaefer<529> wc config.modules | read -E       
64  461 4569 config.modules

Doesn't happen with -e:

schaefer<540> wc config.modules | read -Ae                         
64
461
4569
config.modules

"cvs annotate" pegs this for rev 1.82 (workers/17582) but I suspect that
is an unrelated syntactic change and really it's been this way since
before the CVS repository was first set up in April 1999.  Indeed, I
can reproduce this in zsh 2.4 (no, that's not a typo for 4.2).

Follow-Ups:
- Re: Is "read -AE" buggy?
  - From: Peter Stephenson

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