[NTG-pdftex] \pdfretval vs. expandable \pdfstrcmp

The Thanh Han hanthethanh at myrealbox.com
Thu Jun 16 13:50:46 CEST 2005


the reason is the same like in case of \pdfescapestr: I
don't know tex the program well enough to make them
expandable, so just made a quick hack to get it work. Anyone
willing to improve them is welcome very much.

Regards,
Thanh

On Wed, Jun 15, 2005 at 08:41:48PM +0200, Heiko Oberdiek wrote:
> Hello,
> 
> is there a reason why \pdfstrcmp is not expandable?
> An expandable variant could be used in expandable contexts:
>   \ifcase\numexpr\pdfstrcmp{StringA}{StringB}+1\relax
>   ...\or ...\or ...\fi
> Inserting into a sorted linear list could be done in O(n):
>   \edef\mylist{\addtolist\mylist{foo}}%
> Now it is O(n^2) :-(
> 
> Yours sincerely
>   Heiko <oberdiek at uni-freiburg.de>
> -- 
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