From: Aditya Mahajan <adityam@umich.edu>
To: mailing list for ConTeXt users <ntg-context@ntg.nl>
Subject: Re: Bad interaction between new interpretation of underscore and modules
Date: Thu, 13 Jan 2011 17:43:47 -0500 (EST) [thread overview]
Message-ID: <alpine.LNX.2.01.1101131743100.1271@ybpnyubfg.ybpnyqbznva> (raw)
In-Reply-To: <AFD498F0-EA14-4B24-9C55-56A35BC02CBE@gmail.com>
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On Thu, 13 Jan 2011, Wolfgang Schuster wrote:
>
> Am 13.01.2011 um 17:18 schrieb Mathieu Boespflug:
>
>> Hi all,
>>
>> today's beta introduced a really strange problem. Consider two source files:
>>
>> definitions.tex:
>> \startmodule[definitions]
>> \def\lambdax{\lambda_x}
>> \stopmodule[definitions]
>>
>> main.tex:
>> \usemodule[definitions]
>> \starttext
>> blah $\lambdax$ blah.
>> \stoptext
>>
>> This results in the following compile error:
>>
>> ! Undefined control sequence.
>> \lambdax ->\lambda_x
>>
>> l.5 blah $\lambdax
>> $ blah.
>> ?
>>
>> However, if you change "\usemodule[definitions]" into "\input
>> definitions" instead, then there is no compile error! My understanding
>> is that the underscore is a valid character for macro names now
>> outside of math mode, which is what is causing the problem. But I
>> really don't understand what magic is going on in the modules code to
>> trigger this.
>>
>> I would be very interested in an explanation of what is going on.
>
> You need \normalsubscript in your module. You define a command and
> in this case it doesn’t matter that you plan to use it in math mode,
> the _ is now a normal letter like “a” and this won’t change when you
> call \lambdax in your document.
>
> Write
>
> \def\lambdax{\lambda\normalsubscript x}
>
> and it will work again.
Untested:
\def\lambdax{\math{\lambda_x}}
should also work.
Aditya
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next prev parent reply other threads:[~2011-01-13 22:43 UTC|newest]
Thread overview: 9+ messages / expand[flat|nested] mbox.gz Atom feed top
2011-01-13 16:18 Mathieu Boespflug
2011-01-13 21:50 ` Wolfgang Schuster
2011-01-13 22:43 ` Aditya Mahajan [this message]
2011-01-14 0:14 ` Wolfgang Schuster
2011-01-14 9:15 ` Mathieu Boespflug
2011-01-14 9:32 ` Wolfgang Schuster
2011-01-14 10:09 ` Mathieu Boespflug
2011-01-14 11:01 ` Hans Hagen
2011-01-14 11:13 ` Wolfgang Schuster
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