CVS log for interchange/code/UserTag/var.tag

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Default branch: MAIN

Fix incorrect license in headers GPL v2 -> GPL v2 "or later".  Update copyrights.

Fix incorrect license in headers GPL v2 -> GPL v2 "or later".  Update copyrights.

Big copyright and version number update to prepare for 5.3.2 release.

Header/license fix or Version update+minor formatting fix, or both

- *: Fixed headers
- button.tag: proper quoting in html generated from 2 loops

Documented it in xmldocs, fixed header

use positional variable for filter, remove include artifact

missing addAttr and $opt variable added

Allow filter attribute to var tag, similar to value, cgi, and scratch,
except that filtered value will never be saved back into the variable.
Example:

	[var name=ADDRESS filter=html2text]

Incidentally I think the logic of this tag's code is now much easier to
follow.

updated LINUXIA branch to 4.9 sources in order to use it as testbed again

* Add another postional parameter, no behavior change.

don't return the whole variable hash

* Move most all code out of bin/interchange. The only routines
  that remain are:

		dontwarn
		version
		usage
		catch_warnings
		parse_options
		main_loop

   Once the initial startup for Interchange is done, this code
   is completely out of the picture.

* Create new Vend::Dispatch module which contains the bulk of the
  code removed from bin/interchange.

* Move the important update_data() subroutine to Vend::Data.

* Move the session-related routines to Vend::Session.

* Move the order-related routines do_order() and update_quantity()
  to Vend::Order.

* Change many ::uneval() calls to plain uneval() or Vend::Util::uneval().

* Remove various unused tags and routines....

	* The great tag breakout!

	* Almost all tags are now UserTag definitions. The only exceptions
	  are:

		and bounce goto if label or unless

    * New TagDir directive (default is VENDROOT/code) sets the
	  directory (or directories) which are searched for code definitions
	  set by UserTag and CodeDef.

	* New TagGroup directive establishes groups of ITL tags which can
	  be included.

	  	TagGroup :crufty "banner default ecml html_table onfly sql"

	  The default groups include :core, which contains all of the
	  ITL tags defined in 4.8/early 4.9. The groups are defined
	  in $Vend::Cfg::StdTags and can be undefined if desired
	  with "TagGroup :group".

	* New TagInclude directive allows inclusion of tags (or groups
	  of tags). If a tag is defined as a core tag (with a .coretag
	  or .tag or .ct extension) and is not included, it will not
	  be compiled and placed in the tag map. This is for all catalogs,
	  so if *any* catalog uses a tag it must be included.

	  Examples:

		# Include the base tags
	  	TagInclude :core

		# Not the commerce tags
		TagInclude !:commerce

		# But make sure item-list is included even though
		# it is in :commerce
		TagInclude item-list

		## Double negatives are honored
		TagGroup    :foo "bar !baz buz"
		## With the group above, the below is equivalent
		## to TagInclude !bar baz !buz
		TagInclude !:foo

    * New CodeDef directive allows the setting of filters,
	  order checks, FormAction, ActionMap, ItemAction,
	  and LocaleChange.

			## filters
			CodeDef  mixedcase Filter
			CodeDef  mixedcase Routine <<EOR
			sub {
				my $val = shift;
				## [filter mixedcase]mixed case[/filter]
				## outputs "MiXeD CaSe"
				$val =~ s/(.)(.)/\u$1\l$2/g;
				return $val;
			}
			EOR

			## order checks
			CodeDef  mixedcase OrderCheck
			CodeDef  foo  Routine <<EOR
			sub {
				my ($ref, $var, $val) = @_;
				return (1,$var) if $val eq 'bar';
				return (0,$var, "foo must be bar");
			}
			EOR

	   All work in catalog.cfg; LocaleChange and ItemAction are not
	   global. FormAction, ActionMap, and ItemAction directives
	   are equivalent to their CodeDef equivalents.