[texhax] Can't use \d (dot below) with \edef

[Philip Taylor (Webmaster)]

Oleg Katsitadze wrote:
> On Thu, Jun 21, 2007 at 12:04:06PM +0300, Oleg Katsitadze wrote:
>>   \edef\savedfirstmark{\noexpand\MacroNotToBeExpanded \the\toks0 \MacroToBeExpanded}%
>>                                  ^^^^^^^^^^^^^^^^^^^^  ^^^^^^^^^  ^^^^^^^^^^^^^^^^^
>>                                      no expansion      one-level    full expansion
>>                                                        expansion
>>
>> Note the space after \toks0 -- this delimits the token register's
>> number and is removed from the input (doesn't make it into
>> \savedfirstmark's definition).
> 
> One minor correction:  of course, the space after \the\toks0 is
> present in \savedfirstmark's definition; what I meant was that it is
> removed from the _output_, i.e., it is not typeset.

Are you /sure/ ?  Here is my test case :

	\toks 0 = {[ABC 123 def]}
	\def \MacroNotToBeExpanded {[\oalign]}
	\def \MacroToBeExpanded {[\space A\space \the \toks 0 ]}
	\edef\savedfirstmark{\noexpand\MacroNotToBeExpanded \the\toks0 \MacroToBeExpanded}
	\message {\meaning \savedfirstmark}
	\toks 0 = \expandafter {\savedfirstmark}
	[\the \toks 0  ]
	\end

->

	This is pdfeTeXk, Version 3.141592-1.30.3-2.2 (Web2c 7.5.5) (format=pdftex 2006.9.19)  29 JUN 2007 12:17
	entering extended mode
	 %&-line parsing enabled.
	**Oleg.tex
	(./Oleg.tex macro:->\MacroNotToBeExpanded [ABC 123 def][ A [ABC 123 def]]
	[1{c:/Layered products/TeX/Live/2005/texmf-var/fonts/map/pdftex/updmap/pdftex.map}] )
	<c:/Layered products/TeX/Live/2005/texmf-dist/fonts/type1/bluesky/cm/cmr10.pfb>
	Output written on Oleg.pdf (1 page, 5655 bytes).

Philip Taylor