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Fixed test case statement

- library/xotcl/library/xotcl2.tcl: Provided a virtual slot "multivalued" to establish backward compatibility with XOTcl1 - library/xotcl/tests/slottest.xotcl: Added some tests on backward compatibility for XOTcl slots

- serializer: * pertain perobjectdispatch and keepcallerself in serializer * extend regression test

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- serializer: * make [::Serializer deepSerialize -ignoreVarsRE "" $o] behave like [::Serializer deepSerialize $o], since learn@wu depends on that, and a value for ignoreVarsRE of empty looks more like an omitted value than a regular expression, that should match everything. * extended regression test

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nsf.c: - added object parameter option "slotinitialize" - renamed object parameter option "invokesetter" -> "slotassign" - call slot.assign instead of setter of object - removed restriction on nosetter/invokesetter: nosetter can be used in connection with slotassign - added regression test for slot.initialize

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- don't allow object creation to overwrite non-object cmds (e.g. procs)

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- improve debug line

- library/lib/nxdoc-xowiki.tcl: Finished and polished the xowiki backend for nxdoc. Some tests regarding relative paths and the treeview generation are pending ... - library/lib/nxdoc-xowiki.tcl: Use the built-in base64 facility if running under Tcl 8.6 - Due to re-introducing nested-object-as-method semantics lately, nxdoc started stumbling over name conflicts between nested entity hierarchies (i.e., the entity object representing "/cls/ class info class" ...) and equally-named introspection calls on such entities (e.g., a "info class" call). I made these calls more robust my using -system dispatches; which is fine as long as we do not have sth. like "/obj/ info eval". Generally speaking, the risk of such naming conflicts discredits the use of object nesting in nxdoc; should eventually be revised. Or, as work-around: Using a filter on Entity instances to protect/redirect critical calls.

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    ./lib/nxdoc-assets/@object.html.yuidoc
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    ./lib/nxdoc-assets/leftbar.html.yuidoc
- tests/serialize.test: Added some basic regression tests, in particular to challenge the filter options provided by Serializer->deepSerialize() and Serializer->all(). - Included a test for commit 595e6a2. - Along the line, two minor issues where fixed: 1) Set Serializer->ignore() to public, otherwise the various external message sends to this method would fail; 2) Object-serialize() did not distinguish between serialising a per-object or per-class container properly; as a consequence, per-object containers were not restored at all. Add a test covering this.

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- library/serialize/serializer.tcl: Due to the split between serializer and object system serializer, the ignore settings (passed as object variables, i.e., ignoreVarRE) got lost. This is fixed now ...

- treating incompatible forwarding to slot vs. slot option noaccessor - extended regression test

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- Bump version number of head to 2.0b4

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- additional object parameter option "invokesetter" managed by nx.tcl This was necessary, since the previously implemented strategy called the setter whenever slot= was provided. This has the problem, that values could be converted twice (once by "configure", once by the setter method", which lead for the converter to a double refcounting on the value.

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- make clear that "pattern" is an optional argument of "info lookup method" - make clear, that 'all' is a permissible value for nonpos arg "-callprotection" (several commands)

- Forward setting of object parameters to the slot object, when assign method is user-defined on the slot object - Cleanup and extend regression test

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BEWARE: We are missing multivalued support in xotcl1 emulation

- fixed potential crash from method caching, when permissions on cmds are changed and become e.g. unresolvable - removed flag allowmethoddispatch, since behavior can be achived via private flag. - extended regression test

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- deacitivate for the time being allowmethoddispatch (make it behave always like true) - added instead new flag "perobjectdispatch" to make behavior of ensembleobjects configurable. - The behavior for keepcallerself is currently only activated for the method-interface for object dispatch, since otherwise the following would be dangerous, since "o2 foo" would destroy o2 nx::Object create o1 nsf::object::property o1 keepcallerself true nx::Object create o2 { ::public method foo {} {o1 destroy} } o2 foo

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- nsf.c: start all error messages with a lower case word for consistency and to follow closer to Tcl's conventions

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Extend handling of dashses in XOTcl's configure method to perform a more eager search for command begins (same change as in XOTcl 1)

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- Added exerpimental object property "allowmethoddispatch" for child-objects to be called from parent objects via method interface. Background: both, per-object methods and childobjects are implemented via cmds in the same tcl namespace. Without special care, both are callable via the standard dispatch. Apparently, this is not always wanted. - handled allowmethoddispatch and keepcallerself in copy/move - set allowmethoddispatch per-default in XOTcl - removed visablilty of objects with "allowmethoddispatch" false in "info methods" and "info search methods" - extended regression test

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- simplified usage of ObjectName() and ClassName() macros (no caller parenthesis needed) - added exerpimental object property keepcaller self (currently only evaluated by aliased objects)

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Bump version number to 2.0 to avoid confusions with the serializer from XOTcl 1

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    ./xotcl/library/serialize/Serializer.xotcl
- library/serialize/serializer.tcl: Remove uses of ::nsf::method::property to handle "returns", now redundant because "returns" are properly reported by "info method definition"

- xotcl/library/comm/Httpd.xotcl: force dates in GMT as HTTP RFCs require

- restructured directories, added configure options, some more cleanup

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- nx based c code generator for experimenting with different code engines

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nsf.c, nsf.h, nsfStack.c, nx.tcl, tcl-cool.tcl, xotcl2.tcl - fix spelling in comments - strip unneeded space

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- better to let file classify this file as latex than C++

- nsf.c: fix call of DispatchDefaultMethod() in cases it triggers an error for 8.6b - nx.tcl: give a slightly better error message in case the root-object of an ensemble is called directly

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