* Emulating AMS stuff in ConTeXt @ 2002-12-07 18:24 Giuseppe Bilotta 2002-12-08 20:26 ` Hans Hagen 0 siblings, 1 reply; 3+ messages in thread From: Giuseppe Bilotta @ 2002-12-07 18:24 UTC (permalink / raw) Hello, while trying to build an AMS emulation layer on top of ConTeXt math macros, I defined (among the other) the following macros: \def\startalign{% \startformula \let\\\cr \grabuntil{stopalign}\doeqalign } \def\doeqalign#1{\eqalign{#1\cr}\stopformula} \let\stopalign\relax These allow me to write: \startalign a & = b = \\ & = c \stopalign and everything is fine. Yet I cannot do \placeformula[hook] \startalign a & = b = \\ & = c \stopalign because of expansion problems. Why? How can I define the stuff? -- Giuseppe "Oblomov" Bilotta ^ permalink raw reply [flat|nested] 3+ messages in thread
* Re: Emulating AMS stuff in ConTeXt 2002-12-07 18:24 Emulating AMS stuff in ConTeXt Giuseppe Bilotta @ 2002-12-08 20:26 ` Hans Hagen 2002-12-08 21:36 ` Re[2]: " Giuseppe Bilotta 0 siblings, 1 reply; 3+ messages in thread From: Hans Hagen @ 2002-12-08 20:26 UTC (permalink / raw) At 07:24 PM 12/7/2002 +0100, you wrote: >def\startalign{% > \startformula > \let\\\cr > \grabuntil{stopalign}\doeqalign >} >\def\doeqalign#1{\eqalign{#1\cr}\stopformula} ^^ better make that \crcr in order to catch users \\ >\let\stopalign\relax > >These allow me to write: > >\startalign > a & = b = \\ > & = c >\stopalign isn't \startmathalign a better choice? >and everything is fine. Yet I cannot do > >\placeformula[hook] >\startalign > a & = b = \\ > & = c >\stopalign > >because of expansion problems. Why? How can I define the stuff? took me a couple of cd's to uncover this -) (1) placeformula has to look ahead, and the next command is not seen as something math; so, (2) i made another lookahead, and then (3) we ran into those \cr & and # things that may not always show up everywhere, so (4) i had to rewrite a low level macro that i didn't like rewriting, i.e. (5) i had to use a variant i'd always thought that could be avoided so, you spoiled my afternoon -) btw, if you isolate/collect the ams math that's not yet in m-newmat, i can see if/how i can add it there in a configurable way, so if some things fails, we can look into it later you can try the version i just uploaded Hans ------------------------------------------------------------------------- Hans Hagen | PRAGMA ADE | pragma@wxs.nl Ridderstraat 27 | 8061 GH Hasselt | The Netherlands tel: +31 (0)38 477 53 69 | fax: +31 (0)38 477 53 74 | www.pragma-ade.com ------------------------------------------------------------------------- information: http://www.pragma-ade.com/roadmap.pdf documentation: http://www.pragma-ade.com/showcase.pdf ------------------------------------------------------------------------- ^ permalink raw reply [flat|nested] 3+ messages in thread
* Re[2]: Emulating AMS stuff in ConTeXt 2002-12-08 20:26 ` Hans Hagen @ 2002-12-08 21:36 ` Giuseppe Bilotta 0 siblings, 0 replies; 3+ messages in thread From: Giuseppe Bilotta @ 2002-12-08 21:36 UTC (permalink / raw) Sunday, December 8, 2002 Hans Hagen wrote: HH> At 07:24 PM 12/7/2002 +0100, you wrote: >>def\startalign{% >> \startformula >> \let\\\cr >> \grabuntil{stopalign}\doeqalign >>} >>\def\doeqalign#1{\eqalign{#1\cr}\stopformula} HH> ^^ better make that \crcr in order to catch HH> users \\ Will fix. I just "copied" the AMS defs ... >>\let\stopalign\relax >> >>These allow me to write: >> >>\startalign >> a & = b = \\ >> & = c >>\stopalign HH> isn't \startmathalign a better choice? Maybe. I just "converted" the AMS-LaTeX "align" environment, so I kept the align name. >>and everything is fine. Yet I cannot do >> >>\placeformula[hook] >>\startalign >> a & = b = \\ >> & = c >>\stopalign >> >>because of expansion problems. Why? How can I define the stuff? HH> took me a couple of cd's to uncover this -) HH> (1) placeformula has to look ahead, and the next command is not seen as HH> something math; so, HH> (2) i made another lookahead, and then HH> (3) we ran into those \cr & and # things that may not always show up HH> everywhere, so HH> (4) i had to rewrite a low level macro that i didn't like rewriting, i.e. HH> (5) i had to use a variant i'd always thought that could be avoided HH> so, you spoiled my afternoon -) :P Sorry, but it's your choice to work on sundays ;) HH> btw, if you isolate/collect the ams math that's not yet in m-newmat, i can HH> see if/how i can add it there in a configurable way, so if some things HH> fails, we can look into it later Ok. I'm "filling it up" as it comes while typesetting/converting some notes (part of them were hand-written, part of the in LaTeX form). HH> you can try the version i just uploaded Will do. -- Giuseppe "Oblomov" Bilotta ^ permalink raw reply [flat|nested] 3+ messages in thread
end of thread, other threads:[~2002-12-08 21:36 UTC | newest] Thread overview: 3+ messages (download: mbox.gz / follow: Atom feed) -- links below jump to the message on this page -- 2002-12-07 18:24 Emulating AMS stuff in ConTeXt Giuseppe Bilotta 2002-12-08 20:26 ` Hans Hagen 2002-12-08 21:36 ` Re[2]: " Giuseppe Bilotta
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