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Bug#81257: tetex-base: amsmath seems to be broken



From: Peter Jay Salzman <p@dirac.org>
Subject: Re: Bug#81257: tetex-base: amsmath seems to be broken
Date: Sat, 6 Jan 2001 19:59:25 -0800

> thanks for replying.   i've used the following macros to produce vector and
> unit vector symbols:
> 
> \renewcommand{\v}[1]{\ensuremath{{\bf \vec{ #1}}}}
> \newcommand  {\h}[1]{\ensuremath{{\bf \hat{ #1}}}}
> 
> i'm sure of this because i just recently submitted two scholarly papers to
> the american journal of physics.
> 
> as of a few weeks ago, they produce vector signs when amsmath is not loaded
> but tildes when amsmath is loaded.  this is new behavior.

Very sorry, Peter, it's my fault that I guessed this was
not a bug of amsmath.  I investigated a bit more and found
that

- under LaTeX209, \bf should not be used under math environment

- but under LaTeX2e, \bf can be used under both text environment
and math environment.

So I asked to AMS if this is a bug or not and got today that
this was indeed a bug!

From: AMS Technical Support <tech-support@ams.org>
Subject: Re:  \bf\vec produces wrong output
Date: Mon, 19 Mar 2001 13:05:36 -0500 (EST)

> dear atsuhito kohda,
> thank you for your report of a problem where \vec turns into a
> tilde.  yes, this is definitely a bug, and it has been put onto
> our list for attention.
> 
> For the present, the best we can offer is a workaround.  the
> problem appears to arise when the accent is not in the ordinary
> roman font -- \vec is in the math italic font -- and is not
> converted properly to bold.
> 
> the following coding will produce the arrow as desired, although
> it will not be bold:
> 
>     \renewcommand{\v}[1]{\ensuremath{\vec{\mathbf{#1}}}}

So this bug is already sent to upstream and will be fixed
(but, of course, not fixed yet).

Sorry again and thanks for your report.

Best Regards,			2001.3.21

-- 
 Debian Developer & Debian JP Developer - much more I18N of Debian
 Atsuhito Kohda <kohda@pm.tokushima-u.ac.jp>
 Department of Math., Tokushima Univ.



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