?SPAM? - Re: [texhax] Orphan section heads
Uwe Lück
uwe.lueck at web.de
Fri Oct 28 16:27:26 CEST 2005
At 13:31 28.10.05, Philip TAYLOR wrote:
>Dear Uwe -- Many thanks for your suggestion;
>I suspect that one "\expandafter" got lost in
>transit (as it stands, you are trying to redefine
>\expandafter rather than \verbatim !), but modulo
>that, it seems to work as you intended :-)))
>>\makeatletter
>>\def \expandafter \verbatim \expandafter{\expandafter
>> \@beginparpenalty\expandafter\@M\verbatim}
>>\makeatother
Indeed, it was missing before transit already!
>Very many thanks, and I am cc'ing Robin who may
>wish to retrofit something similar to the TUGboat
>macros.
It might be a subject for LaTeX as well; yet someone
who makes subsection headings embedded is
particularly obliged to deal with the problem (IMHO).
The best that comes to my mind is a user version
of \@afterheading to be used when one knowingly
starts a \@trivlist after an embedded heading:
\makeatletter
\let\stayhereyoubloodytrivlist\@afterheading
\makeatother
Or even: \@xsect uses \@nobreaktrue in any case,
and \@nobreakfalse starts its \everypar assignment!?
-- Uwe.
>--------
>Uwe Lück wrote:
>
>>Dear Phil and all involved,
>>the diagnosis is rather simple. The LTUGproc subsections
>>are embedded into the following text (the "next skip" is negative).
>>The authors of \@startsection seem not to have thought of
>>the possibility that an embedded heading could precede a
>>paragraph environment. In Standard LaTeX, the same would happen
>>with \paragraph. The environment is even likely to set a penalty
>>that overrides the \clupenalty (a general TeX problem).
>>I don't find good ways out so easily.
>>In your case I would suggest:
>>\makeatletter
>>\def \expandafter \verbatim \expandafter{\expandafter
>> \@beginparpenalty\expandafter\@M\verbatim}
>>\makeatother
>>-- This should also prevent the \skip in \@verbatim
>>from breaking.
>>One may also try the samepage trick or
>>\parbox{\columnwidth}, I am not experienced with that.
>>Best Regards,
>> Uwe.
>>At 16:32 24.10.05, Philip TAYLOR wrote:
>>
>>>Dear Uwe -- the relevant part of the log, as requested,
>>>as 1435 lines, and is at
>>>
>>> http://personal.rhul.ac.uk/chaa/006/log.log.txt
>>>
>>>the input was :
>>>
>>> \tracingmacros = 1
>>> \subsection {explanation.cases}
>>> \begin{verbatim}
>>> 0
>>> 1
>>> 2
>>> \end{verbatim}
>>> \tracingmacros = 0
>>>
>>>Note that this is a boundary case; one fewer lines in the
>>>verbatim text and it is all fitted on the current page.
>>>
>>>Looking at the first few lines of the log, I fear this
>>>is complicated (and perhaps even caused) by TUGboat's
>>>intervention : I am therefore cc'ing Barbara, who may
>>>wish to look at her part of the code ...
>>>
>>>** Phil.
>>>
>>>>>At 16:12 21.09.05, Philip TAYLOR wrote:
>>>>>
>>>>>>Hmmm, sadly I can now demonstrate that it
>>>>>>is only too easy to get an orphaned subsection
>>>>>>head : this accomplishes it for me, though
>>>>>>I very much wish that it didn't :-(((
>>>>>>
>>>>>> \documentclass [final]{ltugproc}
>>>>>> \usepackage {graphicx}
>>>>>> \hfuzz = 1\jot
>>>>>> \overfullrule = 1\jot
>>>>>> \hyphenation {legit-imately}
>>>>>> \flushbottom
>>>>>> . . .
>>>>>> \subsection {byz-data.dat}
>>>>>> \begin{verbatim}
>>>>>> . . .
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