Logtalk 2.21.0 is now available for downloading

Hi!

Logtalk 2.21.0 is now available for downloading from the Logtalk web
site:

http://www.logtalk.org/

This release adds a new predicate directive, alias/3, which allows the
definition of alternative predicate names in order to improve
readability of inherited features and to solve conflicts between
implemented, imported, or inherited predicates. In addition,
categories are now allowed to import other categories, useful when a
modified version of a category is needed for importing into several
unrelated objects. Three new examples are included, illustrating the
new features of this release.

From the release notes:

* Added a new predicate directive, alias/3, which allows the
definition of alternative predicate names in order to improve
readability of inherited features and to solve conflicts between
implemented, imported, or inherited predicates.

* Added new example, "aliases", illustrating the use of the new
alias/3 predicate directive for improving readability of inherited
features.

* Added new example, "diamonds", illustrating problems and solutions
for the "diamond problem" (multi-inheritance conflicts and
ambiguities) using the new alias/3 predicate directive.

* Allow categories to import other categories, i.e. allow categories
to be defined as a composition of other categories. This feature
should only be used when extending a category without breaking its
functional cohesion (for example, when a modified version of a
category is needed for importing into several unrelated objects).

* Added new example, "engines", illustrating importing a category from
another category.

* Updated the syntax coloring configuration files for the supported
text editors for the new alias/3 predicate directive.

* Added autocomplete strings for Logtalk methods and for Logtalk and
Prolog built-in predicates and directives to the SubEthaEdit 2.x text
editor.

* Corrected a bug which prevented compilation of metafiles containing
parametric entities.

The CVS tag for this release is "lgt2210".


Happy logtalking!

Paulo