Re: esoteric macro expansion bug in t-bib?

Re: esoteric macro expansion bug in t-bib?

[Idris Samawi Hamid]

You will need to add the following macro to the example file ibar-bib.tex. 
Once the expansion bug is fixed the file will compile.

\def\h#1{{\oalign{\relax#1\crcr\hidewidth\SHIFT{34}%
    \vbox to.2ex{\hbox{\char'25}\vss}\hidewidth}}}

Best
Idris

===============================================
===============================================

Dear Taco,

There is some esoteric macro expansion bug in the bib module (beyond my
capability to understand). For example, the \Ibar macro works fine outside of
the a= context. \getcommacommandsize can't seem to figure out that ## stands
for an alignment preamble. Is there a way to protect the argument of a= ?

Please try the following :

================ibar-bib.bbl====================
\startpublication[k=amini93,
                  t=book,
                  a=al-Am\={i}n\~i,
                  y=1993,
                  s=]
\author[]{Mu\.hammad H\=ad\=i}[]{}{Al-Am\=in\=i}
\title{Mu\`allimu \~a\~l-\v S\=i\`ah: a~l-\v Say\h h al-Muf\=id}
%\pubname{}
\city{Beirut}
\pubyear{{1993}}
\stoppublication
===========================================

================ibar-bib.tex====================
% output=pdf interface=en

\usemodule[bib]

\def\SHIFT#1{\dimen0=.00#1ex \multiply\dimen0 by\fontdimen1\font
    \kern-.0156\dimen0} % compensate for slant/italic in lower accents

\def\USHIFT#1{\dimen0=.00#1ex \multiply\dimen0 by\fontdimen1\font
             \kern.0156\dimen0} % compensate for slant/italic in upper accents

\def\IBAR%
{\leavevmode\vbox{\offinterlineskip\lineskip0.295ex%
\ialign{##\cr\USHIFT{120}\hfill\hbox to .21243em{\leaders\hrule
height .07ex\hfill}\hfill\SHIFT{1}\cr\i\cr}}}

\definecharacter imacron          {\IBAR} % ConTeXt-dependent!

\setupwhitespace[big]

\starttext

\cite[amini93]

M\=irz\=a

\section{References}{\tfx\setupinterlinespace
{\leavevmode\placepublications}}

\stoptext
===========================================

I get the following error

===========================================
systems         : begin file ibar-bib at line 20
! Illegal parameter number in definition of \commacommand.
<to be read again>
                   \cr
\IBAR ...lineskip \lineskip 0.295ex\ialign {##\cr
                                                  \USHIFT {120}\hfill \hbox
..

\dohandleaccent ... #1\string #2\empty \endcsname
                                                  \else \ifcsname
\accentpre...

\thebibauthors ->{al-Am\={i}
                            n\~i}
\getcommacommandsize [#1]->\edef \commacommand {#1
                                                  }\scratchtoks
\expandafter...

\dobibauthoryear ...acommandsize [\thebibauthors ]
                                                  \@EA \processcommalist
\@E...
..
===========================================

Please advise-)

Best
Idris

============================
Professor Idris Samawi Hamid
Department of Philosophy
Colorado State University
Fort Collins, CO 80523

_______________________________________________
ntg-context mailing list
ntg-context@ntg.nl
http://www.ntg.nl/mailman/listinfo/ntg-context

============================
Professor Idris Samawi Hamid
Department of Philosophy
Colorado State University
Fort Collins, CO 80523

RE: esoteric macro expansion bug in t-bib?

[Idris Samawi Hamid]

>===== Original Message From Taco Hoekwater <taco@elvenkind.com> =====
>Christopher Creutzig wrote:
>> Idris Samawi Hamid wrote:
>>>\def\IBAR%
>>>{\leavevmode\vbox{\offinterlineskip\lineskip0.295ex%
>>>\ialign{##\cr\USHIFT{120}\hfill\hbox to .21243em{\leaders\hrule
>>>height .07ex\hfill}\hfill\SHIFT{1}\cr\i\cr}}}
>>
>>
>>  Could you try
>> \unexpanded\def\IBAR% ...
>>
>
>That was my first thought as well.

That finally ocurred to me after you all were sleep yesterday-) Yes, the 
\unexpanded solves things.

I'm curious: how exactly does \unexpanded work? Is this an eTeX primitive?

Best
Idris

============================
Professor Idris Samawi Hamid
Department of Philosophy
Colorado State University
Fort Collins, CO 80523

Re: esoteric macro expansion bug in t-bib?

[Taco Hoekwater]

Idris Samawi Hamid wrote:
> That finally ocurred to me after you all were sleep yesterday-) Yes, the 
> \unexpanded solves things.
> 
> I'm curious: how exactly does \unexpanded work? Is this an eTeX primitive?

\unexpanded is macro, but it normally expands to \protected, which is an
eTeX primitive indeed. In 'normal' tex, it uses a macro approach to
achieve a similar effect: it defines two macros instead of one. There
will be

     \def\IBAR{\donottest\doIBAR}

and it's accompagnying

     \def\doIBAR% ... your definition

ConTeXt internals toggle the definition of \donottest depending on
the surrounding environment, using \let\donottest\noexpand or
\let\donottest\relax etc. This achieves the same effect as the
eTeX primitive, but is not as robust.

Cheers, Taco

Re: esoteric macro expansion bug in t-bib?

[Christopher Creutzig]

Taco Hoekwater wrote:

> \unexpanded is macro, but it normally expands to \protected, which is an

 Justto add to the confusion: It expands to what eTeX calls \protected,
not to what ConTeXt users get when they type \protected.  But Hans'
version was there first. :-)


regards,
	Christopher Creutzig

esoteric macro expansion bug in t-bib?

[Idris Samawi Hamid]

esoteric macro expansion bug.

Dear Taco,

There is some esoteric macro expansion bug in the bib module (beyond my 
capability to understand). For example, the \Ibar macro works fine outside of 
the a= context. \getcommacommandsize can't seem to figure out that ## stands 
for an alignment preamble. Is there a way to protect the argument of a= ?

Please try the following :

================ibar-bib.bbl====================
\startpublication[k=amini93,
                  t=book,
                  a=al-Am\={i}n\~i,
                  y=1993,
                  s=]
\author[]{Mu\.hammad H\=ad\=i}[]{}{Al-Am\=in\=i}
\title{Mu\`allimu \~a\~l-\v S\=i\`ah: a~l-\v Say\h h al-Muf\=id}
%\pubname{}
\city{Beirut}
\pubyear{{1993}}
\stoppublication
===========================================

================ibar-bib.tex====================
% output=pdf interface=en

\usemodule[bib]

\def\SHIFT#1{\dimen0=.00#1ex \multiply\dimen0 by\fontdimen1\font
    \kern-.0156\dimen0} % compensate for slant/italic in lower accents

\def\USHIFT#1{\dimen0=.00#1ex \multiply\dimen0 by\fontdimen1\font
             \kern.0156\dimen0} % compensate for slant/italic in upper accents

\def\IBAR%
{\leavevmode\vbox{\offinterlineskip\lineskip0.295ex%
\ialign{##\cr\USHIFT{120}\hfill\hbox to .21243em{\leaders\hrule
height .07ex\hfill}\hfill\SHIFT{1}\cr\i\cr}}}

\definecharacter imacron          {\IBAR} % ConTeXt-dependent!

\setupwhitespace[big]

\starttext

\cite[amini93]

M\=irz\=a

\section{References}{\tfx\setupinterlinespace
{\leavevmode\placepublications}}

\stoptext
===========================================

I get the following error

===========================================
systems         : begin file ibar-bib at line 20
! Illegal parameter number in definition of \commacommand.
<to be read again>
                   \cr
\IBAR ...lineskip \lineskip 0.295ex\ialign {##\cr
                                                  \USHIFT {120}\hfill \hbox 
...

\dohandleaccent ... #1\string #2\empty \endcsname
                                                  \else \ifcsname 
\accentpre...

\thebibauthors ->{al-Am\={i}
                            n\~i}
\getcommacommandsize [#1]->\edef \commacommand {#1
                                                  }\scratchtoks 
\expandafter...

\dobibauthoryear ...acommandsize [\thebibauthors ]
                                                  \@EA \processcommalist 
\@E...
...
===========================================

Please advise-)

Best
Idris

============================
Professor Idris Samawi Hamid
Department of Philosophy
Colorado State University
Fort Collins, CO 80523

Re: esoteric macro expansion bug in t-bib?

[Christopher Creutzig]

Idris Samawi Hamid wrote:
> esoteric macro expansion bug.

> \def\IBAR%
> {\leavevmode\vbox{\offinterlineskip\lineskip0.295ex%
> \ialign{##\cr\USHIFT{120}\hfill\hbox to .21243em{\leaders\hrule
> height .07ex\hfill}\hfill\SHIFT{1}\cr\i\cr}}}

 Could you try
\unexpanded\def\IBAR% ...


regards,
	Christopher

Re: esoteric macro expansion bug in t-bib?

[Taco Hoekwater]

Christopher Creutzig wrote:
> Idris Samawi Hamid wrote:
> 
>>esoteric macro expansion bug.
> 
> 
>>\def\IBAR%
>>{\leavevmode\vbox{\offinterlineskip\lineskip0.295ex%
>>\ialign{##\cr\USHIFT{120}\hfill\hbox to .21243em{\leaders\hrule
>>height .07ex\hfill}\hfill\SHIFT{1}\cr\i\cr}}}
> 
> 
>  Could you try
> \unexpanded\def\IBAR% ...
> 

That was my first thought as well.

Taco