[texhax] abbrevs package: incorrect spacing

[jtzzaa11-texhax1 at yahoo.com]

Hello,

I'm using the "abbrevs" package to define macros. The manual says that a space will be added after a macro unless the following nonwhite character is in a set of predefined characters, which include left and right curly braces. However, in this simple example a space is added after the macro:

\newabbrev{\mymac}{123}
xx{\mymac}abc


produces


xx123 abc


Any suggestions how to solve this?.

TIA,
Joel.