On Sun, 3 Jun 2007, Hans Hagen wrote:
> Aditya Mahajan wrote:
>>
>> I had a look at \wordright. The trouble is that \wordright makes no attempt
>> to prevent a page break if it is on a line of its own. It it can be
>> enhanced to take that into account, that is fine with me. The placed of
>> endofproof symbol is complicated. amsthm, does something similar to
>> qed.sty, while ntheorem goes into a two pass mechansim to get the placement
>> right.
> i never tested it but in pdftex we can add a "\vadjust pre {\nobreak}" ; the
> problem with tricks is that it will break other things; the only work in
> controlled situations
Maybe then also add an option for \endsymbolcommand. Let the core
implement the safest way to do things; the adventurous user (or a
module) can change the placement mechanism to whatever he/she wants.
>> Yes, but that is doing a lot of work simply to inherit the number.
> well, as long as tex is doing the work ... the advantage is that other number
> related things also inherit
That is true. I had not thought about conversion, numberstyle, and
such things.
There is another thing, which is more important from a style writer's
point of view, rather than the user's. Suppose I am writing a module
for IEEE journals, and they want their theorms in a particular style.
Suppose there are two styles, one for theorems and propositions (say
stlyeA), and one for definitions and remarks (say styleB). In the
module I can define four enumerations, with appropriate styles.
\defineenumeration[theorem]
\defineenumeration[proposition]
\setupenumerations[theorem,proposition][settings for styleA]
and similar for styleB.
Now suppose a user wants to have a new enumeration, called lemma, in
styleA. How does he do that? The options are:
1. Looks into the IEEE module and copies settings for styleA.
2. does something like
\definenumber[lemma]
\defineenumeration[lemma][theorem][number=lemma]
An alternative approach is to define a new object called
enumerationalternative. So that things can be
\defineenumerationalternative[styleA][settings for styleA]
\defineenumeration[theorem][alternative=styleA], etc.
This is roughly what LaTeX does, and most math users have come to
expect something like this. This should not be too difficult to
implement. \defineenumerationalterative can simply do
\getvariables[\??dd\c!alternative#1]
and \defineenumeration can see if alternative is something and copy
parameters from \??dd\c!alternative.
Do you think it makes sense to add this in the core?
Aditya
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