GNU bug report logs - #9818
y-or-n-p prints nothing in batch mode

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Message #3 received at submit <at> debbugs.gnu.org (full text, mbox):

From: Glenn Morris <rgm <at> gnu.org>
To: submit <at> debbugs.gnu.org
Subject: y-or-n-p prints nothing in batch mode
Date: Thu, 20 Oct 2011 18:39:40 -0400

Package: emacs
Version: 24.0.90
Severity: minor

emacs -Q -batch --eval '(yes-or-no-p "foo? ")'

prints "foo? (yes or no)" and waits for input. If you type something
other than yes or no it prints "Please answer yes or no." and repeats
the prompt.

emacs -Q -batch --eval '(y-or-n-p "foo? ")'")'

does not print anything, it just sits there waiting for "y RET" or "n RET".
Entering something other than y or n prints nothing.

Message #6 received at 9818 <at> debbugs.gnu.org (full text, mbox):

From: Chong Yidong <cyd <at> gnu.org>
To: Glenn Morris <rgm <at> gnu.org>
Cc: 9818 <at> debbugs.gnu.org
Subject: Re: bug#9818: y-or-n-p prints nothing in batch mode
Date: Sat, 29 Oct 2011 16:43:52 +0800

Glenn Morris <rgm <at> gnu.org> writes:

> emacs -Q -batch --eval '(yes-or-no-p "foo? ")'
>
> prints "foo? (yes or no)" and waits for input. If you type something
> other than yes or no it prints "Please answer yes or no." and repeats
> the prompt.
>
> emacs -Q -batch --eval '(y-or-n-p "foo? ")'")'
>
> does not print anything, it just sits there waiting for "y RET" or "n RET".
> Entering something other than y or n prints nothing.

Yes, this is a regression caused by moving y-or-n-p to Lisp.  I've
checked in a fix for this.  (See also Bug#9903 for a related issue).

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