ChangeLog

2004-10-13  Alexandre Duret-Lutz  <adl@src.lip6.fr>

	The computation of the counter example fails the valgrind tests
	and is wrong into two ways: the search stack is generally not a
	path, and does not run until the end of the STL container.
	Remove it.
	* src/tgbaalgos/tarjan_on_fly.cc, src/tgbaalgos/tarjan_on_fly.hh
	(tarjan_on_fly): Do not inherit from the emptiness_search class,
	because the check method will no longer return a counter example.
	(tarjan_on_fly::check): Return only a boolean.
	(tarjan_on_fly::build_counter): Delete.
	* src/tgbatest/ltl2tgba.cc: Adjust.

	* src/tgba/tgbaexplicit.cc (tgba_explicit_succ_iterator::current_state,
	tgba_explicit_succ_iterator::current_condition,
	tgba_explicit_succ_iterator::current_accepting_conditions): Assert
	the iteration is not finished.

2004-10-12  Alexandre Duret-Lutz  <adl@gnu.org>

	* wrap/python/tests/run.in: Typo.  From Akim Demaille.

2004-10-11  Alexandre Duret-Lutz  <adl@src.lip6.fr>

	* configure.ac: Empty CFLAGS and CXXFLAGS.
	* m4/debug.m4: Update CXXFLAGS too.

2004-10-08  Alexandre Duret-Lutz  <adl@src.lip6.fr>

	* doc/Doxyfile.in: Upgrade to Doxygen 1.3.9.

2004-09-27  Alexandre Duret-Lutz  <adl@src.lip6.fr>

	* src/sanity/style.test: Suggest using "x->y", not "(*x).y".
	* src/tgbaalgos/tarjan_on_fly.cc: Fix.

2004-09-23  Alexandre Duret-Lutz  <adl@src.lip6.fr>

	* src/sanity/style.test: Suggest ++i over i++ when it does not
	matter, for consistency.
	* src/tgbaalgos/tarjan_on_fly.cc, iface/gspn/ssp.cc,
	src/tgbaalgos/reductgba_sim_del.cc, src/tgbaalgos/reductgba_sim.cc,
	src/tgbaalgos/minimalce.cc, src/tgba/tgbareduc.cc: Adjust.

	* src/tgbaalgos/ltl2tgba_fm.hh (ltl_to_tgba_fm): New unobs argument.
	* src/tgbaalgos/ltl2tgba_fm.cc (ltl_to_tgba_fm): Handle unobs.
	* src/tgbatest/ltl2tgba.cc (syntax, main): New -U option.

2004-09-21  Alexandre Duret-Lutz  <adl@src.lip6.fr>

	* src/tgbaalgos/colordfs.hh, src/tgbaalgos/minimalce.cc,
	src/tgbaalgos/minimalce.hh, src/tgbaalgos/nesteddfs.hh,
	src/tgbaalgos/tarjan_on_fly.hh, src/tgbatest/ltl2tgba.cc: Rename
	emptyness_search to emptiness_search.

	* src/sanity/style.test: Warn about places where size() is used
	instead of empty().
	* src/misc/bddalloc.cc (bdd_allocator::extend): Use empty() rather
	than size() when checking emptiness of lists.
	* src/tgbaalgos/reductgba_sim_del.cc, src/tgbaalgos/minimalce.cc,
	src/ltlvisit/basicreduce.cc, src/ltlvisit/reduce.cc,
	src/tgbaalgos/gtec/ce.cc, src/tgbaalgos/ltl2tgba_fm.cc,
	src/misc/minato.cc: Likewise.
	* src/ltlast/multop.cc (multop::instance): Call ->size() only once.

2004-09-20  Alexandre Duret-Lutz  <adl@src.lip6.fr>

	Update to SWIG 1.3.22.
	* wrap/python/libpy.c: Delete.
	* wrap/python/swigpy.i: New file.
	* wrap/python/Makefile.am (swigpy_wrap.c): Build this from swigpy.i
	and use it instead of libpy.c.

	* INSTALL, lbtt/INSTALL: New upstream version.

2004-09-14  Thomas Martinez  <martinez@src.lip6.fr>

	* src/tgbatest/emptchk.test
	src/tgbaalgos/tarjan_on_fly.hh,
	src/tgbaalgos/tarjan_on_fly.cc,
	src/tgbaalgos/nesteddfs.hh,
	src/tgbaalgos/nesteddfs.cc,
	src/tgbaalgos/minimalce.hh,
	src/tgbaalgos/minimalce.cc: To correct a bug.

	* src/ltltest/reduc.test (FICH): bad file name.

2004-09-13  Thomas Martinez  <martinez@src.lip6.fr>

	* src/tgbaalgos/nesteddfsgen.hh src/tgbaalgos/nesteddfsgen.cc:
	New algorithm for emptiness check.

	* src/tgbatest/spotlbtt.test,
	src/tgbatest/reductgba.cc,
	src/tgbatest/ltl2tgba.cc:
	Add option for reduction of TGBA.

	* src/tgbatest/emptchk.test, src/tgbaalgos/Makefile.am,
	src/tgbaalgos/tarjan_on_fly.hh, src/tgbaalgos/tarjan_on_fly.cc,
	src/tgbaalgos/nesteddfs.hh, src/tgbaalgos/nesteddfs.cc,
	src/tgbaalgos/minimalce.hh, src/tgbaalgos/minimalce.cc,
	src/tgbaalgos/colordfs.hh, src/tgbaalgos/colordfs.cc:
	Remove some bugs.

	src/tgbaalgos/gtec/ce.cc:
	Modification of construction of counter example.

	* src/tgbaalgos/reductgba_sim.hh src/tgbaalgos/reductgba_sim.cc,
	src/tgbaalgos/reductgba_sim_del.cc,
	src/tgba/tgbareduc.hh, src/tgba/tgbareduc.cc:
	Modification for delayed simulation.


2004-08-23  Thomas Martinez  <martinez@src.lip6.fr>

	* src/tgbaalgos/tarjan_on_fly.hh,
	src/tgbaalgos/tarjan_on_fly.cc,
	src/tgbaalgos/nesteddfs.hh,
	src/tgbaalgos/nesteddfs.cc,
	src/tgbaalgos/minimalce.hh,
	src/tgbaalgos/minimalce.cc,
	src/tgbaalgos/colordfs.hh,
	src/tgbaalgos/colordfs.cc: four new algorithms for emptiness check.

	* src/tgbaalgos/gtec/ce.hh,
	src/tgbaalgos/gtec/ce.cc: Adapt the counter exemple for the ce
	object in minimalce.hh.

	* src/tgbatest/ltl2tgba.cc,
	src/tgbatest/emptchk.test,
	src/tgbaalgos/Makefile.am: Add files for emptiness-check.

2004-08-23  Thomas Martinez  <martinez@src.lip6.fr>

	* src/tgbaalgos/reductgba_sim_del.cc: Restrict to degeneralize automata.
	* src/tgba/tgbareduc.hh: src/tgba/tgbareduc.cc: Merge transition
	for scc reduce.

2004-08-13  Alexandre Duret-Lutz  <adl@src.lip6.fr>

	* configure.ac, NEWS: Bump version to 0.0y.

	* configure.ac, NEWS: Bump version to 0.0x.

2004-08-12  Alexandre Duret-Lutz  <adl@src.lip6.fr>

	* doc/Doxyfile.in (GENERATE_TAGFILE): Build spot.tag.
	* doc/Makefile.am (dist_pkgdata_DATA): Add spot.tag.

	* src/tgbatest/ltl2tgba.cc (syntax): Typo.

	* doc/Doxyfile.in (STRIP_FROM_PATH): Strip @srcdir@ so its
	does not appear when listing mainpage.dox.

2004-08-11  Alexandre Duret-Lutz  <adl@src.lip6.fr>

	* src/tgbaalgos/ltl2tgba_fm.hh, src/tgbaalgos/ltl2tgba_lacim.hh:
	Typos in Doxygen comments.

2004-08-10  Alexandre Duret-Lutz  <adl@src.lip6.fr>

	* src/ltlvisit/apcollect.hh: Fix include guard.  Report from Denis.
	* src/sanity/includes.test: Include files twice to check include
	guards.

	* src/tgbatest/ltl2tgba.cc (main): Fix another gcc warning in case
	assert() is disabled.

	* src/Makefile.am (nodist_EXTRA_libspot_la_SOURCES): New variable,
	to force C++ linking.

	* iface/gspn/ltlgspn.cc: Fix a gcc warning in case assert() is
	disabled.

2004-08-09  Alexandre Duret-Lutz  <adl@src.lip6.fr>

	* src/ltlvisit/apcollect.cc, src/ltlvisit/apcollect.hh: New files,
	based on code from <Denis.Poitrenaud@lip6.fr>.
	* src/ltlvisit/Makefile.am (libltlvisit_la_SOURCES, ltlvisit_HEADERS):
	Add them.

	* iface/gspn/common.cc, iface/gspn/common.hh,
	src/ltlast/atomic_prop.cc, src/ltlast/atomic_prop.hh,
	src/ltlparse/fmterror.cc, src/ltlparse/public.hh,
	src/ltlvisit/dotty.cc, src/ltlvisit/dotty.hh,
	src/ltlvisit/dump.cc, src/ltlvisit/dump.hh,
	src/ltlvisit/tostring.cc, src/ltlvisit/tostring.hh,
	src/misc/escape.cc, src/misc/escape.hh, src/tgba/bdddict.cc,
	src/tgba/bdddict.hh, src/tgba/bddprint.cc, src/tgba/bddprint.hh,
	src/tgbaalgos/dotty.cc, src/tgbaalgos/dotty.hh,
	src/tgbaalgos/lbtt.cc, src/tgbaalgos/lbtt.hh,
	src/tgbaalgos/neverclaim.cc, src/tgbaalgos/neverclaim.hh,
	src/tgbaalgos/save.cc, src/tgbaalgos/save.hh,
	src/tgbaalgos/gtec/status.cc, src/tgbaalgos/gtec/status.hh,
	src/tgbaparse/fmterror.cc, src/tgbaparse/public.hh: Include <iosfwd>
	in headers, and prefer <ostream> in the body whenever possible.
	* src/sanity/style.test, HACKING: Check and document this.

	* src/ltlast/allnodes.hh, src/ltlast/atomic_prop.hh,
	src/ltlast/binop.hh, src/ltlast/constant.hh,
	src/ltlast/formula.hh, src/ltlast/multop.hh,
	src/ltlast/predecl.hh, src/ltlast/refformula.hh,
	src/ltlast/unop.hh, src/ltlast/visitor.hh: Use \file to introduce
	each file.

	* doc/Doxyfile.in (STRIP_FROM_INC_PATH): Define, so that the
	`#include' references are correct.

	* README: Update.

	* m4/gccoptim.m4: Compute optimization flags for CXX too.

	* m4/ndebug.m4: Update CPPFLAGS, not CFLAGS.

	* src/tgbaalgos/ltl2tgba_fm.hh (ltl_to_tgba_fm): Document all
	parameters.
	* src/tgbaalgos/ltl2tgba_lacim.hh (ltl_to_tgba_lacim): Likewise.

2004-08-07  Alexandre Duret-Lutz  <adl@src.lip6.fr>

	* configure.ac: Call AC_PROG_CC and AM_PROG_CC_C_O.
	* wrap/python/Makefile.am (_buddy_la_LDFLAGS): Move libspotswigpy.la ...
	(_buddy_la_LIBADD): ... here.

2004-08-02  Alexandre Duret-Lutz  <adl@src.lip6.fr>

	* lbtt/: Merge lbtt 1.1.2.

2004-07-30  Alexandre Duret-Lutz  <adl@src.lip6.fr>

	* lbtt/: Merge lbtt 1.1.1.

2004-07-26  Alexandre Duret-Lutz  <adl@src.lip6.fr>

	* doc/Doxyfile.in: Update for Doxygen 1.3.8.

2004-07-23  Alexandre Duret-Lutz  <adl@src.lip6.fr>

	* configure.ac: Call AC_LIBTOOL_WIN32_DLL
	* src/Makefile.am (libspot_la_LDFLAGS): Add -no-undefined.

2004-07-22  Alexandre Duret-Lutz  <adl@src.lip6.fr>

	* src/tgbatest/explicit.test: Do not use `-i', it's not needed
	and it is wrong to put it after `-e'.  Caught by Denis too.

	* src/ltltest/reduc.test: Use `test a = b' not `test a == b'.
	Reported by <Denis.Poitrenaud@lip6.fr> (failure on Cygwin).

2004-07-20  Alexandre Duret-Lutz  <adl@src.lip6.fr>

	* src/tgbatest/defs.in (VALGRIND): Specify --tool=memcheck for
	compatibility with valgrind 2.1.x.
	* src/ltltest/defs.in (VALGRIND): Likewise.

2004-07-16  Alexandre Duret-Lutz  <adl@src.lip6.fr>

	* m4/gccwarn.m4: Do not check nor use -Wstrict-prototypes.
	g++-3.4 complains it makes no sense in C++.

	* iface/gspn/ssp.cc: Typos.

	* iface/gspn/gspn.cc (tgba_succ_iterator_gspn::tgba_succ_iterator_gspn):
	Set size_ to 1 when stuttering is needed, so that done() does not
	return true immediately.

2004-07-12  Alexandre Duret-Lutz  <adl@src.lip6.fr>

	* src/tgbaalgos/gtec/gtec.hh: Typos in comments.

2004-07-09  Alexandre Duret-Lutz  <adl@src.lip6.fr>

	* src/tgba/state.hh (state_ptr_equal, state_ptr_hash): Fix Doxygen
	example.

	* src/tgbaalgos/reductgba_sim.hh (parity_game_graph_delayed,
	reduc_tgba_sim): Fix warnings about Doxygen comment.
	* src/ltlvisit/reduce.hh (reduce): Likewise.

	* doc/footer.html: New file, link to RefDocComments on the wiki.
	* doc/Doxyfile.in (HTML_FOOTER): Use footer.html.
	* doc/Makefile.am (EXTRA_DIST): Add footer.html.

	* THANKS: Fill in.

	* src/tgbatest/ltl2baw.pl: Do not use -T anymore.  Fix comments.

2004-07-08  Alexandre Duret-Lutz  <adl@src.lip6.fr>

	lbtt 1.1.0 supports TGBAs, use that and remove old workarounds.
	* src/tgbaalgos/lbtt.cc (state_acc_pair, state_acc_pair_equal,
	state_acc_pair_hash, acp_seen_map, todo_set, seen_map, fill_todo
	lbtt_reachable): Remove.
	(nonacceptant_lbtt_bfs): Rename as ...
	(lbtt_bfs): ... this, and adjust to output acceptance conditions
	on transitions.
	(nonacceptant_lbtt_reachable): Rename as ...
	(lbtt_reachable): ... this.
	* src/tgbaalgos/lbtt.hh (nonacceptant_lbtt_reachable): Delete.
	* src/tgbatest/ltl2tgba.cc: Suppress option "-T".

	Patch from Heikki Tauriainen <heikki.tauriainen@hut.fi>.
	* src/tgbaalgos/gtec/ce.cc (counter_example::counter_example): Do
	not parenthesize the type after the new operator (g++ 3.4 complains).
	* src/tgbaalgos/dupexp.cc (dupexp_iter::process_state,
	dupexp_iter::declare_state): Use this->automata_instead of
	automata_.  Local protected member automata_ inherited from
	template base class must be prefixed or g++ 3.4 will not look it
	up (conforming to 14.6.2.3).

2004-07-07  Alexandre Duret-Lutz  <adl@src.lip6.fr>

	* lbtt/: Merge lbtt 1.1.0.
	* src/tgbatest/spotlbtt.test: Adjust config file syntax to
	please lbtt 1.1.0.

	* src/tgbaalgos/gtec/gtec.hh (emptiness_check_shy::find_state): Add
	comments.
	* iface/gspn/ssp.cc (emptiness_check_shy_ssp::find_state): Likewise.
	Soheib and I had a hard time figuring why we did this...

2004-07-02  Thomas Martinez  <martinez@src.lip6.fr>

	* src/tgba/tgbareduc.cc, src/tgba/tgbareduc.hh,
	src/tgbaalgos/reductgba_sim.cc,	src/tgbaalgos/reductgba_sim.hh,
	src/tgbaalgos/reductgba_sim_del.cc: Remove some comments.

	* src/tgbatest/ltl2tgba.cc, src/tgbatest/reductgba.cc: Adjust ...
	* src/tgbatest/spotlbtt.test: More test (delayed simulation)

2004-06-29  Alexandre Duret-Lutz  <adl@src.lip6.fr>

	* configure.ac, NEWS: Bump version to 0.0w.

	* configure.ac, NEWS: Bump version to 0.0v.

2004-06-28  Thomas Martinez  <martinez@src.lip6.fr>

	* src/tgbatest/reduccmp.test: Bug.

	* src/tgbatest/reductgba.test: More Test.

	* src/tgbatest/ltl2tgba.cc: Adjust ...
	* src/tgbaalgos/reductgba_sim_del.cc, src/tgbaalgos/reductgba_sim.hh,
	src/tgbaalgos/reductgba_sim.cc: try to optimize.

	* src/tgba/tgbareduc.hh, src/tgba/tgbareduc.cc: Scc reduction
	and we remove some acceptance condition in scc which are not accepting.
	* src/ltlvisit/syntimpl.cc : Some case wasn't detect.
	* src/ltlvisit/basicreduce.cc: Case FGa || FGb = F(Ga | Gb) added.
	* src/ltltest/syntimpl.test: More Test.
	* src/ltltest/syntimpl.cc: Put the formula in negative normal form.

2004-06-28  Alexandre Duret-Lutz  <adl@src.lip6.fr>

	* buddy/: Merge buddy-2-3.

2004-06-25  Alexandre Duret-Lutz  <adl@src.lip6.fr>

	* src/tgbatest/ltl2tgba.cc (main): Degeneralize before
	the simulations.

2004-06-23  Alexandre Duret-Lutz  <adl@src.lip6.fr>

	* src/ltlvisit/tostring.cc (is_bare_word): New function.
	(to_string_visitor::visitor(const atomic_prop*)): Use is_bare_word
	to better check which atomic proposition need to be quoted.
	* src/ltlparse/ltlscan.ll: Do not allow identifiers starting with F_
	or G_.
	* src/ltltest/equals.test, src/ltltest/tostring.test: More tests.

	* src/tgba/tgbatba.cc (tgba_tba_proxy::format_state): Use
	bdd_format_accset to print the acceptance condition part of the state.
	That produces more readable output.

	* wrap/python/cgi/ltl2tgba.in: Add "Formula Simplications" options.
	* wrap/python/spot.i: Wrap src/ltlvisit/reduce.hh.

	* src/ltlvisit/simpfg.cc, src/ltlvisit/simpfg.hh: New files,
	extracted from ...
	* src/ltlvisit/lunabbrev.cc: ... this one, which now work as documented
	again.
	* src/ltlvisit/reduce.cc, src/ltlvisit/syntimpl.cc: Adjust to call
	simplify_f_g() in addition to unabbreviate_logic().
	* src/ltlvisit/Makefile.am (ltlvisit_HEADERS, libltlvisit_la_SOURCES):
	Add simpfg.cc and simpfg.hh.

	* src/ltlvisit/reducform.hh, src/ltlvisit/reducform.cc: Rename to ...
	* src/ltlvisit/reduce.hh, src/ltlvisit/reduce.cc: ... this, to match
	the function name.
	* ltltest/equals.cc, ltltest/reduc.cc, ltlvisit/Makefile.am,
	tgbatest/ltl2tgba.cc, tgbatest/reductgba.cc: Adjust filenames.

	* src/ltlvisit/basicreduce.cc (basic_reduce_visitor::visit(binop*)):
	Factorize.

	* src/ltlvisit/basicreduce.hh: New file, extracted from ...
	* src/ltlvisit/reducform.hh: ... here.
	* src/ltlvisit/basereduc.cc: Rename as ...
	* src/ltlvisit/basicreduce.cc: ... this, to match the function name.
	* src/ltlvisit/Makefile.am (ltlvisit_HEADERS, libltlvisit_la_SOURCES):
	Adjust filenames.
	* src/ltlvisit/reducform.cc: Adjust includes.

	* src/ltlvisit/lunabbrev.hh: Revert superfluous change from
	2004-05-10.

2004-06-22  Thomas Martinez  <martinez@src.lip6.fr>

	* src/ltlvisit/reducform.cc, src/tgba/tgbareduc.cc,
	src/tgbaalgos/reductgba_sim.cc, src/tgbaalgos/reductgba_sim.hh
	src/tgbaalgos/reductgba_sim_del.cc, src/tgbatest/reduccmp.test,
	src/tgbatest/reductgba.cc: 80 columns and style.

2004-06-22  Alexandre Duret-Lutz  <adl@src.lip6.fr>

	* src/sanity/style.test: Typo.

2004-06-22  Thomas Martinez  <martinez@src.lip6.fr>

	* src/tgbatest/ltl2tgba.cc, src/tgbaalgos/reductgba_sim_del.cc,
	src/tgbaalgos/reductgba_sim.hh, src/tgbaalgos/reductgba_sim.cc:
	bug in delayed simulation.

	* src/tgbatest/reduccmp.test, src/tgbatest/reductgba.test,
	src/tgba/tgbareduc.cc: bug in scc reduction.

2004-06-21  Thomas Martinez  <martinez@src.lip6.fr>

	* src/tgbatest/reductgba.test, src/tgba/tgbareduc.cc:
	There is bug in reduction with scc.
	* src/tgbatest/reduccmp.test: More test.

2004-06-17  Thomas Martinez  <martinez@src.lip6.fr>

	* src/tgbatest/reductgba.test: Wrong test are removed.

2004-06-17  Thomas Martinez  <martinez@src.lip6.fr>

	* src/tgbatest/spotlbtt.test: We don't check the post-reduction
	with scc and delayed simulation.

	* src/tgbatest/ltl2tgba.cc: Adjust parameters.
	* src/tgbatest/reductgba.cc, src/tgbatest/Makefile.am: More Test.
	* src/tgbaalgos/reductgba_sim_del.cc: Not finish, lot of bugs.
	* src/tgbaalgos/reductgba_sim.hh, src/tgbaalgos/reductgba_sim.cc:
	Remove some useless comments.
	* src/tgba/tgbareduc.cc, src/tgba/tgbareduc.hh: Bug in SCC.

	* src/ltlvisit/reducform.cc: Correct some bug for multop.
	* src/ltltest/reduc.cc: Thinko
	* src/ltltest/equals.cc: Reduction compare

2004-06-17  Alexandre Duret-Lutz  <adl@src.lip6.fr>

	* iface/gspn/ssp.cc (emptiness_check_shy_ssp::find_state): Free s.
	This fixes a memory leak observed by Soheib Baarir.

2004-06-16  Thomas Martinez  <martinez@src.lip6.fr>

	* src/tgbatest/reductgba.cc, src/tgbatest/reductgba.test: Test for
	reduction of tgba.

2004-06-15  Thomas Martinez  <martinez@src.lip6.fr>

	* src/tgbatest/ltl2tgba.cc: Add some option for the reduction of
	automata.
	* src/tgbatest/spotlbtt.test, src/tgbatest/Makefile.am: Add some
	test for reduction of automata.
	* src/tgbaalgos/reductgba_sim_del.cc, src/tgbaalgos/reductgba_sim.cc,
	src/tgbaalgos/reductgba_sim.hh: Compute some simulation relation
	to reduce a tgba.
	* src/tgba/tgbareduc.cc, src/tgba/tgbareduc.hh: A implementation
	of tgba for the reduction.
	* src/tgbaalgos/Makefile.am, src/tgba/Makefile.am:
	Add the reduction of automata.
	* src/ltlvisit/syntimpl.cc, src/ltlvisit/basereduc.cc:
	Lot of mistake are corrected.
	* src/ltlvisit/syntimpl.hh, src/ltlvisit/reducform.cc,
	src/ltlvisit/reducform.hh, src/ltltest/reduc.cc: Adjust.
	* src/ltltest/equals.cc, src/ltltest/reduccmp.test,
	src/ltltest/Makefile.am: Add a test for reduction.

2004-06-02  Alexandre Duret-Lutz  <adl@src.lip6.fr>

	* iface/gspn/common.cc, iface/gspn/common.hh: Remove the
	class gspn_environment, and move it to ...
	* src/ltlenv/declenv.cc, src/ltlenv/declenv.hh: .. this new file
	as class declarative_environment.
	* src/ltlenv/Makefile.am (ltlenv_HEADERS): Add declenv.hh.
	(libltlenv_la_SOURCES): Add declenv.cc.
	* iface/gspn/dottygspn.cc, iface/gspn/dottyssp.cc,
	iface/gspn/gspn.cc, iface/gspn/gspn.hh, iface/gspn/ltlgspn.cc,
	iface/gspn/ssp.cc, iface/gspn/ssp.hh: Adjust references
	to declarative_environment.

	* HACKING, src/sanity/style.test: NULL is not portable, prohibit it.
	* iface/gspn/ssp.cc, src/ltltest/reduc.cc, src/ltltest/syntimpl.cc,
	src/ltlvisit/basereduc.cc, src/ltlvisit/reducform.cc,
	src/ltlvisit/syntimpl.cc: Use 0 instead of NULL.

2004-06-01  Alexandre Duret-Lutz  <adl@src.lip6.fr>

	* src/ltltest/inf.cc, src/ltltest/inf.test: Rename as ...
	* src/ltltest/syntimpl.cc, src/ltltest/syntimpl.test: ... these.
	* src/ltltest/Makefile.am: Adjust.
	* src/ltlvisit/forminf.cc: Rename as...
	* src/ltlvisit/syntimpl.cc: ... this.
	* src/ltlvisit/syntimpl.hh: New file with definitions extracted
	from ...
	* src/ltlvisit/reducform.hh: ... this one.
	* src/ltlvisit/Makefile.am, src/ltlvisit/reducform.cc: Adjust.

2004-05-30  Alexandre Duret-Lutz  <adl@src.lip6.fr>

	* src/ltlvisit/forminf.cc (form_eventual_universal_visitor,
	inf_form_right_recurse_visitor, inf_form_left_recurse_visitor): Rename
	as ...
	(eventual_universal_visitor, inf_right_recurse_visitor,
	inf_left_recurse_visitor): ... these.
	(is_GF, is_FG): Move ...
	* src/ltlvisit/basereduc.cc (is_GF, is_FG): ... here, since they
	are only used here.
	(basic_reduce_form, basic_reduce_form_visitor): Rename as ...
	(basic_reduce, basic_reduce_visitor): ... these.
	* src/ltlvisit/reducform.cc (reduce_form_visitor): Rename as ...
	(reduce_visitor): ... this.
	* src/ltltest/inf.cc: Adjust calls.
	* src/sanity/style.test: Improve missing-space after coma detection.

2004-05-26  Alexandre Duret-Lutz  <adl@src.lip6.fr>

	* src/ltlvisit/reducform.cc (reduce_form_visitor::visit(constant)):
	Simplify.

	* src/ltlvisit/basereduc.cc, src/ltlvisit/reducform.cc: Use
	dynamic_cast instead of node_type_form_visitor, this is usually
	smaller.
	* src/ltlvisit/reducform.hh,
	src/ltlvisit/forminf.cc (node_type_form_visitor): Delete.
	* src/sanity/style.test: Two more checks.

2004-05-25  Alexandre Duret-Lutz  <adl@src.lip6.fr>

	* src/ltlvisit/formlength.cc: Rename as ...
	* src/ltlvisit/length.cc: ... this.
	* src/ltlvisit/length.hh: New file, extracted from ...
	* src/ltlvisit/reducform.hh: ... here.
	* src/ltlvisit/Makefile.am (ltlvisit_HEADERS): Add length.hh.
	(libltlvisit_la_SOURCES): Rename formlength.cc as length.cc.
	* src/ltltest/reduc.cc: Include length.hh.

	* src/ltlvisit/formlength.cc (length_form_vistor): Rename as ..
	(length_visitor): ... this.
	(form_length): Rename as ...
	(length): ... this.
	* src/ltlvisit/reducform.hh (form_length): Rename as ...
	(length): ... this.
	* src/ltltest/reduc.cc: Adjust.

	* src/ltlvisit/basereduc.cc, src/ltlvisit/formlength.cc: Remove
	useless includes.

	* AUTHORS: Update.

	* src/ltlvisit/reducform.hh: Update Doxygen comments for
	previous change.

	* src/ltlvisit/reducform.hh (option): Rename as ...
	(reduce_options): ... this, and use it as a bit field so
	option can be combined easily.
	(reduce): Adjust argument.
	(reduce_form): Remove, not needed anymore.
	* src/ltlvisit/reducform.cc, src/ltltest/reduc.cc,
	src/tgbatest/ltl2tgba.cc: Adjust.

	* src/sanity/style.test: Catch {.*{ and }.*}.
	* src/sanity/80columns.test: Untabify files.
	* iface/gspn/ltlgspn.cc, src/ltlvisit/basereduc.cc: Fix long lines.

	* src/ltlvisit/basereduc.cc, src/ltlvisit/reducform.cc,
	src/ltlvisit/forminf.cc: Remove superfluous spot::ltl:: prefixes.

	* wrap/python/cgi/ltl2tgba.in: Typos.

2004-05-24  Alexandre Duret-Lutz  <adl@src.lip6.fr>

	* src/sanity/style.test: Catch `;'-not-followed-by-space.
	* src/ltlvisit/reducform.cc, src/ltlvisit/forminf.cc: Fix style.

	* src/ltlvisit/reducform.hh: Fix some Doxygen comments.

	* src/tgbatest/ltl2tgba.cc (syntax): Keep options sorted.

	* src/sanity/Makefile.am (EXTRA_DIST): Distribute 80columns.test
	and style.test.

	* src/ltltest/Makefile.am (EXTRA_DIST): Distribute formulae.txt.
	* src/ltltest/formulae.txt: New file (2200 LTL formulea generated
	by Wring).
	* src/ltltest/formules.ltl: Delete.
	* src/reduc.test: Read formulae.txt.

2004-05-24  Soheib Baarir  <Souheib.Baarir@lip6.fr>

	* iface/gspn/ssp.hh (gspn_ssp_interface::gspn_ssp_interface): Add
	the `inclusion' flag.
	* iface/gspn/ssp.cc (gspn_ssp_interface::gspn_ssp_interface): Call
	inclusion_version when inclusion is set.
	* iface/gspn/ltlgspn.cc (main) [SSP]: Turn on inclusion for -e3,
	-e4, and -e5.

2004-05-21  Alexandre Duret-Lutz  <adl@src.lip6.fr>

	* iface/gspn/gspn.cc (tgba_gspn_private_): Define alive_prop,
	and dead_prop from the dead argument passed to the constructor.
	(tgba_succ_iterator_gspn): Stutter on dead transitions.
	(tgba_gspn::tgba_gspn): Hand dead to tgba_gspn_private_.
	(gspn_interface::gspn_interface): Hand dead to tgba_gspn.
	* iface/gspn/gspn.hh (gspn_interface::gspn_interface): Take a
	dead argument.
	* iface/gspn/ltlgspn.cc [!SSP]: Add a option -d to specify the
	dead property.
	* iface/gspn/udcseltl.test: Try option -d.

	* src/sanity/style.test: Check the iface/ tree too.
	* iface/gspn/gspn.cc, iface/gspn/ssp.cc: Fix style.

	* src/sanity/80columns.test: Check the iface/ tree too.
	* iface/gspn/dcswaveltl.test, iface/gspn/dcswavefm.test,
	iface/gspn/dcswaveeltl.test, iface/gspn/udcsltl.test,
	iface/gspn/udcseltl.test, iface/gspn/udcsfm.test,
	iface/gspn/udcsefm.test: Wrap to fit 80 columns.

2004-05-18  Alexandre Duret-Lutz  <adl@src.lip6.fr>

	* doc/Makefile.am (EXTRA_DIST, spot.html): Built the html
	documentation in $(srcdir) since it is distributed.
	* doc/Doxyfile.in (HTML_OUTPUT): Likewise.  Upgrade to Doxygen 1.3.7.

2004-05-17  Thomas Martinez  <martinez@src.lip6.fr>

	* src/ltlvisit/basereduc.cc, src/ltltest/inf.cc (main): Style.

	* src/ltlvisit/basereduc.cc (spot): 80 columns.
	* src/ltlvisit/reducform.cc (spot), src/ltltest/inf.cc,
	src/ltltest/reduc.cc (main), src/ltlvisit/reducform.hh,
	src/tgbatest/ltl2tgba.cc (main): More option.
	* src/ltltest/inf.test: More test.

2004-05-17  Alexandre Duret-Lutz  <adl@src.lip6.fr>

	* wrap/python/buddy.i: Define typemap for input_buf and use it
	for fdd_extdomain.  Define const_int_ptr and use it for fdd_vars.

	* src/misc/bddalloc.cc (bdd_allocator::varnum): Suppress.
	(bdd_allocator::bdd_allocator): Adjust.
	(bdd_allocator::extvarnum): Always call bdd_varnum(), so that
	it doesn't matter if the number of variable has been augmented
	externally.
	* src/misc/bddalloc.hh (bdd_allocator::varnum): Suppress.

	* src/ltlvisit/formlength.cc: Fix style to please sanity checks.

	* src/ltlvisit/lunabbrev.cc: Fix style to please sanity checks.

	* src/tgbaalgos/neverclaim.cc: Fix them.
	* sanity/style.test: Diagnose semicolons with leading spaces.

	* src/ltlvisit/forminf.cc: Fix style to please sanity checks.
	Also avoid node_type_form_visitor where a dynamic_cast is done.

2004-05-14  Alexandre Duret-Lutz  <adl@src.lip6.fr>

	* wrap/python/buddy.i: Preliminary bindings for FDD and BVEC.

	* ltltest/inf.cc, ltltest/reduc.cc, ltlvisit/reducform.cc: Fix style.
	* sanity/style.test: More tests.

	* src/tgbatest/ltl2tgba.cc (main): Fix style.
	* HACKING: Mention `else if'.

	* src/tgbaalgos/neverclaim.cc (never_claim_bfs): Do not output
	space before colon, and do not output the top-level formula using
	Spin's syntax.

2004-05-14  Thomas Martinez  <martinez@src.lip6.fr>

	* src/tgbatest/ltl2tgba.cc (main): Thinko.

	* src/ltlvisit/basereduc.cc (spot): Correct some mistakes.
	* src/ltlvisit/lunabbrev.cc (spot): Nothing change.
	* src/tgbatest/ltl2tgba.cc (main): More option to reduce
	formula.
	* src/tgbatest/spotlbtt.test: One more test.

2004-05-14  Alexandre Duret-Lutz  <adl@src.lip6.fr>

	* src/ltlvisit/tostring.cc (to_spin_string_visitor,
	to_string_visitor): Do not parenthesize the top-level formula.
	* tgbatest/explicit.test, tgbatest/explpro2.test,
	tgbatest/explpro3.test, tgbatest/explprod.test,
	tgbatest/readsave.test, tgbatest/tgbaread.test,
	tgbatest/tripprod.test: Adjust expected output.
	* sanity/style.test: Fix regexes to catch an error seen in
	tostring.cc.

	* src/tgbaalgos/gtec/gtec.cc (emptiness_check::remove_component):
	Do not try to erase state that are not found in H.
	Report from Soheib Baarir.

	* src/ltltest/reduc.test: Use ./defs and clean result.data.
	* src/ltltest/Makefile.am (CLEANFILES): Clean result.data.

2004-05-13  Thomas Martinez  <martinez@src.lip6.fr>

	* src/ltlvisit/Makefile.am: Copyright 2004.
	* src/ltltest/inf.test: More test.
	* src/ltlvisit/basereduc.cc, src/ltlvisit/forminf.cc (spot):
	Use dynamic_cast.
	* src/ltlvisit/reducform.cc, src/ltlvisit/reducform.hh,
	src/ltltest/reduc.test, src/ltltest/reduc.cc: Add an option
	to choose which rules applies to simplify the formula.

2004-05-13  Alexandre Duret-Lutz  <adl@src.lip6.fr>

	* src/ltltest/reduc.test: Typo.

	* src/ltlparse/ltlparse.yy (OP_POST_NEG, OP_POST_POS): New tokens.
	(subformula): Recognize `ATOMIC_PROP OP_POST_POS' and
	`ATOMIC_PROP OP_POST_NEG'.
	* src/ltlparse/ltlscan.ll: Introduce the not_prop start condition,
	to restrict the set of atomic propositions allowed in places
	where they are not expected.  Make `true' and `false' case insensitive.
	* src/ltltest/parse.test, src/ltltest/tostring.test: More cases.
	* src/ltlvisit/tostring.cc (to_string_visitor): Quote atomic
	propositions equal to "true" or "false".

2004-05-11  Alexandre Duret-Lutz  <adl@src.lip6.fr>

	* src/ltltest/Makefile.am (TESTS): Run inf.test and reduc.test last.

	* src/ltltest/reduc.test: POSIXify.

2004-05-10  Alexandre Duret-Lutz  <adl@src.lip6.fr>

	* src/sanity/style.test: New file.
	* src/sanity/Makefile.am (check-local): Run it.
	* src/ltlvisit/nenoform.cc, src/ltlvisit/tostring.cc,
	src/tgba/bdddict.cc, src/tgba/bddprint.cc, src/tgba/tgba.cc,
	src/tgba/tgbaproduct.cc, src/tgbaalgos/lbtt.cc,
	src/tgbaalgos/magic.cc, src/tgbaalgos/powerset.cc,
	src/tgbaalgos/reachiter.cc, src/tgbaalgos/gtec/ce.cc,
	src/tgbaalgos/gtec/gtec.cc, src/tgbatest/ltl2tgba.cc: Fix style
	issues reported by style.test.

	* src/ltltest/inf.cc, src/ltltest/inf.test, src/ltltest/reduc.test,
	src/ltlvisit/formlength.cc, src/ltlvisit/reducform.cc,
	src/ltlvisit/reducform.hh: Fix copyright year, these files were
	created in 2004.

	* src/sanity/80columns.test: New file.
	* src/sanity/Makefile.am (check-local): Run it.
	* src/ltltest/equals.test, src/ltltest/lunabbrev.test,
	src/ltltest/nenoform.test, src/ltltest/parseerr.test
        src/ltltest/tunabbrev.test, src/ltltest/reduc.cc,
	src/ltltest/tunabbrev.test, src/ltlvisit/forminf.cc,
	src/tgbatest/explpro2.test, src/tgbatest/explpro3.test,
	src/tgbatest/explprod.test, src/tgbatest/spotlbtt.test,
	src/tgbatest/tripprod.test: Wrap long lines.

2004-05-10  Thomas MARTINEZ  <martinez@abacus.lip6.fr>

	* src/tgbatest/ltl2tgba.cc (main): Add a option for reduce the formula.

	* src/ltltest/formules.ltl: A pattern of 2000 formulas.
	* src/ltltest/inf.test: Test some case of implies.
	* src/ltltest/inf.cc: Test some case of implies.
	* src/ltltest/reduc.test: Test reduction of a file of formula.
	* src/ltltest/reduc.cc: Test reduction of a formula.

	* src/ltlvisit/formlength.cc: Gives the lenght of a formula.
	* src/ltlvisit/forminf.cc: To know if a formula implies an other.
	* src/ltlvisit/basereduc.cc: Implement only basic reduction.
	* src/ltlvisit/reducform.cc: Implement reduction.
	* src/ltlvisit/reducform.hh: To reduce a formula.

2004-05-10  Alexandre Duret-Lutz  <adl@src.lip6.fr>

	* src/tgbaalgos/ltl2tgba_fm.cc (ltl_to_tgba_fm): Refine
	fair_loop_approximation when branching postponement is not used.

	Cache formula translations, and canonize formulae before doing
	branching postponement.
	* src/tgbaalgos/ltl2tgba_fm.cc (formula_canonizer): New class, with
	bits extracted from fill_dests and ltl_to_tgba_fm.
	(fill_dests, ltl_to_tgba_fm): Adjust to use formula_canonizer.

	* src/tgbaalgos/ltl2tgba_fm.hh (ltl_to_tgba_fm): Add argument
	fair_loop_approx.
	* src/tgbaalgos/ltl2tgba_fm.cc (ltl_to_tgba_fm): Implement the
	fair_loop_approx optimization.
	(ltl_promise_visitor, ltl_possible_fair_loop_visitor,
	possible_fair_loop_checker): New classes.
	* src/tgbatest/ltl2tgba.cc: Add the -L option.
	* src/tgbatest/spotlbtt.test: Exercise fair_loop_approx.
	* wrap/python/cgi/ltl2tgba.in: Make it an option.

2004-05-07  Alexandre Duret-Lutz  <adl@src.lip6.fr>

	* src/tgbaalgos/ltl2tgba_fm.hh (ltl_to_tgba_fm): Add argument
	branching_postponement.
	* src/tgbaalgos/ltl2tgba_fm.cc (fill_dests): New function, extracted
	from ltl_to_tgba_fm().
	(ltl_to_tgba_fm): Implement the branching_postponement optimization.
	* src/tgbatest/ltl2tgba.cc: Add the -p option.
	* src/tgbatest/spotlbtt.test: Exercise branching postponement.
	* wrap/python/cgi/ltl2tgba.in: Make it an option.

2004-05-04  Alexandre Duret-Lutz  <adl@src.lip6.fr>

	* src/tgbaalgos/ltl2tgba_fm.cc: Add a superfluous return to pacify
	some GCC version.  Report from Denis Poitrenaud.

	* wrap/python/cgi/ltl2tgba.in: Fix output HTML.

2004-05-03  Alexandre Duret-Lutz  <adl@src.lip6.fr>

	* src/tgbaalgos/ltl2tgba_fm.cc (ltl_to_tgba_fm): Clone and then
	free all formulae entered into canonical_succ, to avoid errors
	when a formula is entered into canonical_succ but not into
	formulae_seen.
	* src/tgbatest/ltl2tgba.test: Add a new test, and check with -f.
	Report from Thomas Martinez.

2004-04-23  Alexandre Duret-Lutz  <adl@src.lip6.fr>

	* configure.ac, NEWS: Bump version to 0.0u.

	* configure.ac, NEWS: Bump version to 0.0t.
	* HACKING: Update tools requirements.
	* src/sanity/Makefile.am (EXTRA_DIST): Distribute includes.test.

	* src/sanity/Makefile.am, src/sanity/includes.test: New files.
	* src/Makefile.am (SUBDIRS): Add sanity.
	* configure.ac: Output src/sanity/Makefile.in.

	* src/tgbatest/Makefile.am (check_PROGRAMS): Move ltl2tgba ...
	(noinst_PROGRAMS): ... here.
	* iface/gspn/Makefile.am (check_PROGRAMS): Rename as ...
	(noinst_PROGRAMS): ... this.

2004-04-22  Alexandre Duret-Lutz  <adl@src.lip6.fr>

	* src/tgbatest/explicit.test: Reorder bdd variables in output.
	Report from Denis Poitrenaud.

	* wrap/python/cgi/ltl2tgba.in: Print degeneralized statistics
	when show_never_claim.  Change the title to LTL-to-TGBA.
	Suggested by Denis Poitrenaud.

2004-04-21  Alexandre Duret-Lutz  <adl@src.lip6.fr>

	* wrap/python/cgi/ltl2tgba.in (print_footer): Make ltl2tgba.py's
	version a separate variable.

	* wrap/python/cgi/ltl2tgba.in: Pass the formula to
	never_claim_reachable, and cgi.escape its output.
	Lighten the color a bit.

	* src/tgbaalgos/gtec/ce.hh, src/misc/freelist.hh,
	src/tgba/bddprint.hh: Fix Doxygen comments.

	* src/tgbaalgos/neverclaim.hh (never_claim_reachable): Document
	arguments.
	* src/tgbaalgos/neverclaim.cc (never_claim_bfs::state_is_accepting):
	New method.
	(never_claim_bfs::get_state_label, never_claim_bfs::process_state):
	Use it.

	* wrap/python/cgi/ltl2tgba.in: Use darker color and introduce
	the new variable dot_bgcolor.

	* wrap/python/cgi/ltl2tgba.in (add_options): Revamp options output
	using this new function.

	* wrap/python/spot.i: Process tgbaalgos/neverclaim.hh.
	* wrap/python/cgi/ltl2tgba.in: Display the never claim on demand.

2004-04-21  Denis Poitrenaud  <dp@src.lip6.fr>

	* src/ltlvisit/tostring.hh (to_spin_string): New function.
	Convert a formula into a string parsable by Spin.
	* src/tgbaalgos/neverclaim.hh, src/tgbaalgos/neverclaim.cc: New files.
	Print the never claim in Spin format of a degeneralized TGBA.
	* src/tgbaalgos/Makefile.am: Add them.
	* src/tgbatest/ltl2tgba.cc: Add the option -N which outputs the
	never claim in Spin format of a degeneralized TGBA.
	* src/tgbatest/ltl2neverclaim.test: New file.
	* src/tgbatest/Makefile.am: Add it.

2004-04-20  Alexandre Duret-Lutz  <adl@src.lip6.fr>

	* src/ltltest/defs.in, src/tgbatest/defs.in: Correctly set exitcode
	when valgrind is not used.
	Reported by Denis Poitrenaud.

	* src/tgba/tgba.hh (tgba::succ_iter): Doco.
	* src/tgba/tgbatba.hh (tgba_tba_proxy::state_is_accepting): Document
	it.
	Reported by Denis Poitrenaud.

2004-04-17  Alexandre Duret-Lutz  <adl@src.lip6.fr>

	* iface/gspn/ltlgspn.cc (main) [SSP]: Use the standard
	counter-example computation for -e5 too.

	* iface/gspn/ltlgspn.cc (main) [!SSP]: Do not accept -e3, -e4, or -e5.
	(main) [SSP]: Use the standard counter-example computation
	for -e and -e1.

2004-04-15  Soheib Baarir  <Souheib.Baarir@lip6.fr>
	    Alexandre Duret-Lutz  <adl@src.lip6.fr>

	Rename EESRG as SSP.
	* iface/gspn/eesrg.cc, iface/gspn/eesrg.hh,
	iface/gspn/dottyeesrg.cc: Rename as ...
	* iface/gspn/ssp.cc, iface/gspn/ssp.hh, iface/gspn/dottyssp.cc:
	... these.  Adjust all classes and function names.
	* iface/gspn/ltlgspn.cc, iface/gspn/Makefile.am: Adjust all classes
	filenames and function names.
	* m4/gspnlib.m4: Define WITH_GSPN_SSP and LIBGSPNSSP_LDFLAGS.

	* src/tgbaalgos/gtec/nsheap.cc (numbered_state_heap_hash_map::find):
	Rewrite.
	(numbered_state_heap_hash_map::index): New functions.
	(numbered_state_heap_hash_map::filter): Delete.
	* src/tgbaalgos/gtec/nsheap.hh
	(numbered_state_heap_hash_map::index): New functions.
	(numbered_state_heap_hash_map::filter): Delete.
	* iface/gspn/eesrg.cc (numbered_state_heap_eesrg_semi::find,
	numbered_state_heap_eesrg_semi::index): Rewrite.
	(numbered_state_heap_eesrg_semi::filter): Remove.
	* src/tgbaalgos/gtec/gtec.cc, src/tgbaalgos/gtec/ce.cc:
	Adjust to use find() and index() instead of filter()..


	* iface/gspn/eesrg.cc (connected_component_eesrg::has_state):
	Free filtered states.
	(emptiness_check_shy_eesrg): New class.
	(emptiness_check_eesrg_shy): New function.
	* iface/gspn/eesrg.hh (emptiness_check_eesrg_shy): New function.
	* iface/gspn/ltlgspn.cc (main) [EESRG]: Handle -e3, -e4, and -e5.
	* * src/tgbaalgos/gtec/gtec.hh, src/tgbaalgos/gtec/gtec.cc
	(emptiness_check_shy::check): Move arc, num, succ_queue, and todo
	as attributes.
	(emptiness_check_shy::find_state): New virtual function.

2004-04-14  Soheib Baarir  <Souheib.Baarir@lip6.fr>
	    Alexandre Duret-Lutz  <adl@src.lip6.fr>

	* iface/gspn/ltlgspn.cc (connected_component_eesrg,
	connected_component_eesrg_factory, numbered_state_heap_eesrg_semi,
	numbered_state_heap_eesrg_const_iterator,
	numbered_state_heap_eesrg_factory_semi): New classes.
	(emptiness_check_eesrg_semi, emptiness_check_eesrg_shy_semi,
	counter_example_eesrg): New functions.
	* iface/gspn/eesrg.hh (emptiness_check_eesrg_semi,
	emptiness_check_eesrg_shy_semi, counter_example_eesrg): New
	functions.
	* iface/gspn/ltlgspn.cc [EESRG]: Adjust to call these new functions.

2004-04-14  Soheib Baarir  <Souheib.Baarir@lip6.fr>

	* iface/gspn/eesrg.cc (tgba_succ_iterator_gspn_eesrg,
	state_gspn_eesrg): Compute the array of all successors of the
	right state beforehand, pass it to Greatspn (left automata) at
	once, let it compute the resulting synchronized arcs, and iterate
	on that result.

2004-04-14  Alexandre Duret-Lutz  <adl@src.lip6.fr>

	* src/tgbaalgos/gtec/nsheap.hh (numbered_state_heap_factory,
	numbered_state_heap_hash_map_factory): New class.
	* src/tgbaalgos/gtec/nsheap.cc (numbered_state_heap_hash_map_factory):
	Implement it.
	* src/tgbaalgos/gtec/gtec.hh (emptiness_check::emptiness_check,
	emptiness_check_shy::emptiness_check_shy): Take a
	numbered_state_heap_factory argument.
	* tgbaalgos/gtec/status.hh
	(emptiness_check_status::emptiness_check_status): Likewise.
	(emptiness_check_status::h): Make it a numbered_state_heap*.
	* src/tgbaalgos/gtec/ce.cc, tgbaalgos/gtec/gtec.cc,
	tgbaalgos/gtec/status.cc: Adjust uses of ecs_->h.

	* src/tgbaalgos/emptinesscheck.hh, src/tgbaalgos/emptinesscheck.cc:
	Delete and split into ...
	* src/tgbaalgos/gtec/ce.cc, src/tgbaalgos/gtec/ce.hh,
	src/tgbaalgos/gtec/explscc.cc, src/tgbaalgos/gtec/explscc.hh,
	src/tgbaalgos/gtec/gtec.cc, src/tgbaalgos/gtec/gtec.hh,
	src/tgbaalgos/gtec/nsheap.cc, src/tgbaalgos/gtec/nsheap.hh,
	src/tgbaalgos/gtec/sccstack.cc, src/tgbaalgos/gtec/sccstack.hh,
	src/tgbaalgos/gtec/status.cc, src/tgbaalgos/gtec/status.hh: ...
	these new files.
	* src/tgbaalgos/gtec/Makefile.am: New file.
	* src/tgbaalgos/Makefile.am (SUBDIRS, libtgbaalgos_la_LIBADD):
	Recurse into gtec and link gtec/libgtec.la.
	(tgbaalgos_HEADERS, libtgbaalgos_la_SOURCES): Remove emptinesscheck.hh
	and emptinesscheck.cc.
	* configure.ac: Output src/tgbalagos/gtec/Makefile.
	* iface/gspn/ltlgspn.cc, src/tgbatest/ltl2tgba.cc: Update includes.
	* README: Update tree description.

2004-04-13  Alexandre Duret-Lutz  <adl@src.lip6.fr>

	* src/tgbaalgos/emptinesscheck.hh (numbered_state_heap_const_iterator,
	numbered_state_heap, numbered_state_heap_hash_map): New classes.
	* src/tgbaalgos/emptinesscheck.cc
	(numbered_state_heap_hash_map_const_iterator): New class.
	(numbered_state_heap_hash_map): Implement it.

	* src/tgbaalgos/emptinesscheck.hh
	(explicit_connected_component_factory,
	connected_component_hash_set_factory): New classes.
	(counter_example::counter_example): Take an
	explicit_connected_component_factory factory argument.
	* src/tgbaalgos/emptinesscheck.cc: Adjust.

	* src/tgbaalgos/emptinesscheck.hh (explicit_connected_component):
	New class.
	(counter_example::connected_component_set): Rename as ...
	(connected_component_hash_set): ... this, and inherit from
	explicit_connected_component.
	(counter_example::accepting_path, counter_example::complete_cycle):
	Take an explicit_connected_component argument instead of a
	connected_component_set.
	* src/tgbaalgos/emptinesscheck.cc: Adjust.

	* src/tgbaalgos/emptinesscheck.hh
	(counter_example::connected_component_set::has_state): Return
	a const state* and behave like h_filt.
	* src/tgbaalgos/emptinesscheck.cc: Adjust.

	* src/tgbaalgos/emptinesscheck.hh (emptiness_check::check2): Move
	into ...
	(emptiness_check_shy): This new subclass of emptiness_check.
	* src/tgbaalgos/emptinesscheck.cc, src/tgbatest/ltl2tgba.cc,
	iface/gspn/ltlgspn.cc: Adjust.

	* src/tgba/bdddict.hh (bdd_dict::annon_free_list): Hide from Swig.

	* src/tgbaalgo/semptinesscheck.hh (counter_example): New class,
	extracted from ...
	(emptiness_check): ... here.
	* src/tgbaalgos/emptinesscheck.cc, src/tgbatest/ltl2tgba.cc,
	iface/gspn/ltlgspn.cc: Adjust.

	* wrap/python/Makefile.am ($(srcdir)/spot_wrap.cxx)
	($(srcdir)/buddy_wrap.cxx): Use -noruntime instead of -c.

	* src/tgbaalgo/semptinesscheck.hh (emptiness_check_status): New class,
	extracted from ...
	(emptiness_check): ... here.
	* src/tgbaalgos/emptinesscheck.cc: Adjust.

	* src/tgbaalgo/semptinesscheck.hh (scc_stack): New class, extracted
	from ...
	(emptiness_check): ... here.
	(emptiness_check::root): Redefined as a scc_stack object.
	* src/tgbaalgos/emptinesscheck.cc: Adjust.

2004-04-05  Alexandre Duret-Lutz  <adl@src.lip6.fr>

	* src/tgbaalgos/emptinesscheck.cc (emptiness_check::complete_cycle):
	Do not visit a state more than once.  Report from Soheib Baarir.

2004-03-25  Alexandre Duret-Lutz  <adl@src.lip6.fr>

	* src/tgbaalgos/ltl2tgba_fm.cc (translate_dict): Reuse Acc and Var
	variables from a shared bdd_dict.  Register Next variables as
	anonymous variables.
	(translate_dict::translate_dict, translate_dict::~translate_dict,
	translate_dict::register_proposition,
	translate_dict::register_a_variable,
	translate_dict::register_next_variable,
	translate_dict::dump, translate_dict::var_to_formula,
	ltl_to_tgba_fm): Adjust.
	(translate_dict::dict): New attribute.
	(translate_dict::a_map, translate_dict::a_formula_map,
	translate_dict::var_map, translate_dict::var_formula_map): Delete.

	* src/misc/freelist.cc (free_list::remove): Work around
	invalidated iterators.
	* tgba/bdddict.cc (unregister_variable): New methods,
	extracted from ...
	(bdd_dict::unregister_all_my_variables): ... here.
	* tgba/bdddict.hh (unregister_variable): Declare them.

2004-03-23  Alexandre DURET-LUTZ  <adl@src.lip6.fr>

	* src/misc/freelist.hh (free_list::remove, free_list::insert): New
	methods.
	* src/misc/freelist.cc (free_list::register_n,
	free_list::releases_n): Rewrite using free_list::remove and
	free_list::insert.
	(free_list::remove, free_list::insert): New methods.
	* src/tgba/bdddict.hh (bdd_dict::register_anonymous_variables):
	New method.
	(bdd_dict::annon_free_list): New subclass.
	(bdd_dict::free_annonymous_list_of_type_of): New attribute.
	* src/tgba/bdddict.cc (bdd_dict::register_all_variables_of,
	bdd_dict::unregister_all_my_variables): Handle anonymous variables
	too.
	(bdd_dict::register_anonymous_variables,
	bdd_dict::annon_free_list::annon_free_list,
	bdd_dict::annon_free_list::extend): New methods.

	* src/tgbaalgos/emptinesscheck.cc (emptiness_check::accepting_path)
	Fix handling of PATH when backtracking.  Report from Soheib Baarir.

2004-03-18  Alexandre Duret-Lutz  <adl@src.lip6.fr>

	Move the free_list management into a separate class for reuse.

	* src/misc/freelist.hh, src/misc/freelist.cc: New files.
	* src/misc/Makefile.am (misc_HEADERS, libmisc_la_SOURCES): Add them.
	* src/misc/bddalloc.hh (bdd_allocator): Inherit from free_list and
	make dump_free_list visible.
	* src/misc/bddalloc.cc (bdd_allocator::allocate_variables): Move
	all the code into free_list::register_n() and
	bdd_allocator::extend(), and call the former.
	(bdd_allocator::release_variables): Move all the code into
	free_list::release_n() and call it.
	(bdd_allocator::extend): New method.
	* src/tgba/bdddict.cc (bdd_dict::dump): Call dump_free_list;

2004-03-09  Alexandre Duret-Lutz  <adl@src.lip6.fr>

	* configure.ac, NEWS: Bump version to 0.0s.

2004-03-08  Alexandre Duret-Lutz  <adl@src.lip6.fr>

	* configure.ac, NEWS: Bump version to 0.0r.

	* src/tgbaalgos/ltl2tgba_fm.cc (ltl_to_tgba_fm) <exprop>: Do not
	blindly enumerate all combinations of atomic properties; initially
	set all_props to the set of all possibly satisfiable combinations.

2004-02-21  Alexandre Duret-Lutz  <adl@src.lip6.fr>

	* lbtt/src/Makefile.am (lbtt_translate_SOURCES): Fix leftover
	from 1.0.3 merge.

	* wrap/python/cgi/ltl2tgba.in: Process ltl2tgba.opt if it exists.

	* wrap/python/cgi/ltl2tgba.in: Color translators and their options.

2004-02-20  Alexandre Duret-Lutz  <adl@src.lip6.fr>

	* wrap/python/cgi/ltl2tgba.in: Present the options in a table.

	* wrap/python/cgi/ltl2tgba.in: Remove the "print dot" options,
	add a "dot source" source behind each picture instead.  Do
	not run `dot' on big automata.

	* src/tgbaalgos/ltl2tgba_fm.cc (ltl_to_tgba_fm): Fix example
	in comment.  Skip false transitions, and do not compute
	sub-formulae reachable only via false transitions.

	* src/tgbaalgos/ltl2tgba_fm.cc (ltl_to_tgba_fm): Revert
	yesterday's change.  This optimization is NOT covered by exprop.
	In fact it could be generalized.

2004-02-19  Alexandre Duret-Lutz  <adl@src.lip6.fr>

	* src/tgbaalgos/ltl2tgba_fm.cc (ltl_to_tgba_fm): Remove the
	cond_for_true optimization.  It is covered by exprop.

	* src/tgba/tgbatba.cc (tgba_tba_proxy_succ_iterator::current_state):
	Fix reference to Oddoux's thesis.

2004-02-16  Alexandre Duret-Lutz  <adl@src.lip6.fr>

	* src/tgbaalgos/ltl2tgba_fm.hh (ltl_to_tgba_fm): Add the
	symb_merge argument.
	* src/tgbaalgos/ltl2tgba_fm.cc (ltl_to_tgba_fm): Likewise.
	* src/tgbatest/ltl2tgba.cc (main): Rename -fx as -x, and add -y
	to unset symb_merge.
	* wrap/python/cgi/ltl2tgba.in: Remove the exprop version
	of the FM translator, make exprop and symb_merge options.

	* src/tgbaalgos/ltl2tgba_fm.cc (ltl_trad_visitor::visit) <unop::G>:
	suppress the GFy optimisation introduced on 2003-11-26, it is
	generalized by the identification of states with same symbolic
	rewriting introduced on 2004-02-02.

	* lbtt/: Merge lbtt 1.0.3.

2004-02-13  Alexandre Duret-Lutz  <adl@src.lip6.fr>

	* src/tgbatest/ltl2baw.pl (END): Ensure LTL2TGBA is always
	closed.

2004-02-11  Alexandre Duret-Lutz  <adl@src.lip6.fr>

	* src/tgbatest/ltl2tgba.cc (syntax): Recognize "-" as input
	filename for the formula.  Merge the transitions of automata
	read with -X.
	* src/tgbatest/spotlbtt.test: Add many disabled algorithms.
	It is convenient to reuse the `config' file created by this
	test when making statistics.
	* src/tgbatest/ltl2baw.pl: New file.
	* src/tgbatest/Makefile.am (EXTRA_DIST): Add ltl2baw.pl.

2004-02-10  Alexandre Duret-Lutz  <adl@src.lip6.fr>

	* wrap/python/libpy.c: Update from Swig 1.3.21.
	* HACKING: Update versions.

	* src/tgbaalgos/ltl2tgba_fm.cc (ltl_to_tgba_fm): Take an exprop
	argument.  Consider all possible combinations of propositions when
	generating arcs.  Suggested by Jean-Michel Couvreur.
	* src/tgbaalgos/ltl2tgba_fm.hh (ltl_to_tgba_fm): Adjust.
	* src/tgbatest/ltl2tgba.cc: Honor -fx.
	* src/tgbatest/spotlbtt.test: Exercise -fx.
	* wrap/python/cgi/ltl2tgba.in: Support Couvreur/FM with exploded
	properties.

2004-02-09  Alexandre Duret-Lutz  <adl@src.lip6.fr>

	* src/ltlparse/ltlparse.yy: Typo.

	* wrap/python/cgi/ltl2tgba.in: Use render_dot when
	showing formula.
	* wrap/python/cgi/README: Mention unique_id.

2004-02-08  Alexandre Duret-Lutz  <adl@src.lip6.fr>

	This should help getting accurate statistics (on both the
	formula automaton and the synchronized product) from LBTT.
	Idea from Jean-Michel Couvreur.

	* src/tgbaalgos/lbtt.cc (nonacceptant_lbtt_bfs): New class.
	(nonacceptant_lbtt_reachable): New function.
	* src/tgbaalgos/lbtt.hh (nonacceptant_lbtt_reachable): New
	function.
	* src/tgbatest/ltl2tgba.cc (main): Call nonacceptant_lbtt_reachable
	if the -T option is used.
	* src/tgbatest/spotlbtt.test: Setup the -T variants, disabled by
	default.

2004-02-05  Alexandre Duret-Lutz  <adl@src.lip6.fr>

	* src/tgbaalgos/lbtt.hh: Typos.

	* src/tgbatest/spotlbtt.test: Typo.

	* wrap/python/spot.i (unblock_signal): New function.
	* wrap/python/cgi/ltl2tgba.in (print_footer, alarm_handler)
	(reset_alarm): New functions.  Kill the script and its
	children if it runs for too long.
	(render_dot): Call reset_alarm.

2004-02-03  Alexandre Duret-Lutz  <adl@src.lip6.fr>

	* configure.ac, NEWS: Bump version to 0.0q.

	* configure.ac, NEWS: Bump version to 0.0p.

	* wrap/python/cgi/ltl2tgba.in: Fix <table> setting to cope
	with IE, Safari, konqueror, ... None of these support
	rules="groups" frame="border" properly (Mozilla is OK).

2004-02-02  Alexandre Duret-Lutz  <adl@src.lip6.fr>

	* wrap/python/cgi/ltl2tgba.in: Output a description of the syntax.

	* wrap/python/cgi/ltl2tgba.in: Import spot and redirect stderr
	to stdout early.

	* wrap/python/cgi/ltl2tgba.in (print_stats): Compute and display
	the number of acceptance conditions.

	* wrap/python/tests/bddnqueen.py, wrap/python/tests/interdep.py,
	wrap/python/tests/ltl2tgba.py, wrap/python/tests/ltlparse.py,
	wrap/python/tests/ltlsimple.py: Specify coding system to
	accommodate newer Python versions.

	* src/misc/bddalloc.hh: Make all methods public.
	* wrap/python/spot.i: Include misc/bddalloc.hh and misc/minato.hh.
	* wrap/python/tests/minato.py: New file.
	* wrap/python/tests/Makefile.am (TESTS): Add minato.py.

	* src/tgbatest/explicit.cc, src/tgbatest/explprod.cc,
	src/tgbatest/ltl2tgba.cc, src/tgbatest/ltlprod.cc,
	src/tgbatest/mixprod.cc, src/tgbatest/powerset.cc,
	src/tgbatest/readsave.cc, src/tgbatest/tgbaread.cc,
	src/tgbatest/tripprod.cc: Add missing copyright license.

	* wrap/python/cgi/ltl2tgba.in (render_dot): Render .png directly
	with dot, without using convert.
	* wrap/python/cgi/README: Do not mention convert.

	* wrap/python/cgi/ltl2tgba.in (render_dot, render_automaton)
	(render_bdd): New functions, extracted from the rest of the code.

	* wrap/python/cgi/ltl2tgba.in (default_translator): Default
	to trans_fm.
	(translators): Show trans_fm before trans_lacim.

	* wrap/python/cgi/ltl2tgba.in (print_stats): New function.  Call
	it to display the size of the generalized and degeneralized
	automata.

	* src/tgbalagos/stats.hh, src/tgbalagos/stats.cc: New files.
	* src/tgbalagos/Makefile.am: Add them.
	* wrap/python/spot.i: Include src/tgbalagos/dupexp.hh and
	src/tgbalagos/stats.hh

	* src/tgbaalgos/ltl2tgba_fm.cc (ltl_to_tgba_fm): Identify states
	with identical successors.  This optimizes the translation
	of `a R (b R c)', for instance.
	* src/tgbatest/ltl2tgba.test: Add two new tests.

	Hide the tgba_gspn and tgba_gspn_eesrg classes.  Offer the
	corresponding automaton via the automaton() method of the
	gspn_interface and gspn_eesrg_interface classes.

	* iface/gspn/gspn.hh (gspn_interface::gspn_interface): Take dict and
	env arguments.
	(gspn_interface::automaton): New method.
	(tgba_gspn): Move all the declaration ...
	* iface/gspn/gspn.cc (tgba_gspn): ... here.
	(gspn_interface::automaton): Implement it.
	* iface/gspn/eesrg.hh (gspn_eesrg_interface::gspn_eesrg_interface):
	Take dict and env arguments.
	(gspn_eesrg_interface::automaton): New method.
	(tgba_gspn_eesrg): Move all the declaration ...
	* iface/gspn/gspn.cc (tgba_gspn_eesrg): ... here.
	(gspn_eesrg_interface::automaton): Implement it.
	* iface/gspn/dottygspn.cc, iface/gspn/dottyeesrg.cc,
	iface/gspn/ltlgspn.cc: Adjust.

2004-01-30  Alexandre Duret-Lutz  <adl@src.lip6.fr>

	* src/ltlvisit/tostring.cc: Fix output of F0, F1, G0, G1, X0, and X1.
	* src/ltltest/tostring.test: Test these.

2004-01-29  Alexandre Duret-Lutz  <adl@src.lip6.fr>

	* src/tgba/tgbaexplicit.cc (tgba_explicit::get_acceptance_condition):
	Do not treat true and false specially.  Otherwise it breaks
	translation of F(false).
	* src/tgbatest/explprod.test, src/tgbatest/tripprod.test: Do not
	use true as acceptance condition.

	* src/tgbaalgos/ltl2tgba_fm.cc (ltl_trad_visitor): Use Acc[b] as
	acceptance condition for Fb, not Acc[Fb].

	After this change, degeneralized automata are 40% smaller
	in LBTT's statistics.

	* src/tgba/tgbatba.cc (state_tba_proxy): Store an iterator,
	pointing somewhere into the acceptance conditions list, instead of
	an acceptance condition.
	(state_tba_proxy::acceptance_iterator): New method.
	(tgba_tba_proxy_succ_iterator): Adjust to use iterators too.
	(tgba_tba_proxy_succ_iterator::current_state): If the current
	transition is in several consecutive acceptance steps after the
	expected one, advance many steps at once.
	(tgba_tba_proxy::tgba_tba_proxy): Build the acceptance cycle
	as a list, not a map.
	(tgba_tba_proxy::get_init_state, tgba_tba_proxy::succ_iter):
	Adjust.
	* src/tgba/tgbatba.hh (tgba_tba_proxy::acc_cycle_): Declare as
	a list, not a map.

2004-01-26  Alexandre Duret-Lutz  <adl@src.lip6.fr>

	* src/tgbaalgos/magic.cc (magic_search::~magic_search): Release
	all iterators on the stack.
	(magic_search::check): Release iterators that are popped off the
	stack.

	* src/tgbatest/explpro2.test: Fix reordering regex.

	* src/tgbatest/defs.in (run): Use libtool --mode=execute.

2004-01-23  Alexandre Duret-Lutz  <adl@src.lip6.fr>

	* src/tgbaalgos/ltl2tgba_fm.cc (ltl_to_tgba_fm): Merge transitions
	with same destination and acceptance conditions directly, without
	calling a->merge_transition().  If one transitions goes to "True",
	subtract its conditions from all other transitions; this optimizes
	a U b.

	* src/ltlast/refformula.hh (ref_formula::ref_count_): New method.
	* src/ltlast/refformula.cc (ref_formula::ref_count_): New method.
	* src/ltlast/atomic_prop.hh (atomic_prop::dump_instance): New method.
	* src/ltlast/atomic_prop.cc (atomic_prop::dump_instance): New method.

	* src/tgbaalgos/ltl2tgba_fm.cc: Typos in comments.

2004-01-13  Alexandre Duret-Lutz  <adl@src.lip6.fr>

	* configure.ac, NEWS: Bump version to 0.0o.

	* configure.ac: Bump version to 0.0n.
	* NEWS: Update.

	* src/tgbaalgos/emptinesscheck.hh (emptiness_check::check,
	emptiness_check::check2): Document them.

2004-01-12  Alexandre Duret-Lutz  <adl@src.lip6.fr>

	* iface/gspn/ltlgspn.cc (main): Typo, use MIN_ARG.

2004-01-09  Alexandre Duret-Lutz  <adl@src.lip6.fr>

	* iface/gspn/dcswaveeltl.test, iface/gspn/udcsefm.test,
	iface/gspn/udcseltl.test: Exercize -e2.

	* src/tgbaalgos/emptinesscheck.cc (emptiness_check::check2):
	New function, variant of emptiness_check::check().
	* src/tgbaalgos/emptinesscheck.hh (emptiness_check::check2):
	Likewise.
	* src/tgbatest/emptchk.test, src/tgbatest/emptchke.test: Exercize -e2.
	* src/tgbatest/ltl2tgba.cc: Support -e2, for emptiness_check::check2().
	* iface/gspn/Makefile.am [WITH_GSPN_EESRG] (check_PROGRAMS):
	Compile ltlgspn-eesrg instead of ltleesrg.
	(ltleesrg_SOURCES, ltleesrg_LDADD): Replace by...
	(ltlgspn_eesrg_SOURCES, ltlgspn_eesrg_LDADD, LIBGSPNESRG_LDFLAGS):
	... these.
	* iface/gspn/ltleesrg.cc: Delete.
	* iface/gspn/ltlgspn.cc [EESRG]: Support EESRG conditionally.
	Support -e2.

	* src/tgbaalgos/ltl2tgba_lacim.cc: Typo in comment.

	* src/tgbaalgos/emptinesscheck.cc (emptiness_check::check): Typos
	in comments.


	* m4/gspnlib.m4 (AX_CHECK_GSPNLIB): Do not warn about a missing
	library for eesrg.  Define the WITH_GSPN_EESRG conditional.
	* iface/gspn/Makefile.am (gspn_HEADERS, check_PROGRAMS): Add the
	eesrg items in condition WITH_GSPN_EESRG.
	(libspotgspneesrg_la_LIBADD, libspotgspneesrg_la_CPPFLAGS)
	(libspotgspneesrg_la_SOURCES): Define only in condition
	WITH_GSPN_EESRG.

	* src/tgbaalgos/emptinesscheck.cc (emptiness_check::print_stats):
	New function.
	* src/tgbaalgos/emptinesscheck.hh (emptiness_check::print_stats):
	Likewise.
	* iface/gspn/ltlgspn.cc (main) <Couvreur>: Call print_stats().
	* iface/gspn/ltleesrg.cc (main): Likewise.

	* iface/gspn/ltlgspn.cc: Add option -P.

2004-01-08  Alexandre Duret-Lutz  <adl@src.lip6.fr>

	Run valgrind in test cases.
	* src/tgbatest/defs.in (VALGRIND, run): Define.
	* src/tgbatest/bddprod.test, src/tgbatest/dupexp.test,
	src/tgbatest/emptchk.test, src/tgbatest/emptchke.test,
	src/tgbatest/explicit.test, src/tgbatest/explpro2.test,
	src/tgbatest/explpro3.test, src/tgbatest/explprod.test,
	src/tgbatest/ltl2tgba.test, src/tgbatest/ltlprod.test,
	src/tgbatest/mixprod.test, src/tgbatest/readsave.test,
	src/tgbatest/tgbaread.test, src/tgbatest/tripprod.test: Use run().

2004-01-06  Alexandre Duret-Lutz  <adl@src.lip6.fr>

	* iface/gspn/eesrg.cc (format_state): Do not rewrite \n's,
	just strip the last one.  Escaping must be done at output.
	* iface/gspn/gspm.cc (format_state): Likewise.
	* src/misc/escape.hh, src/misc/escape.cc: New files.
	* src/misc/Makefile.am: Add them.
	* src/tgba/bddprint.cc (bdd_format_accset): New function.
	* src/tgba/bddprint.hh (bdd_format_accset): New function.
	* src/tgbaalgos/dotty.cc (dotty_bfs::process_state):
	Escape the state name using escape_str().
	(dotty_bfs::process_link): Escape conditions and acceptance
	conditions using escape_str().
	* src/tgbaalgos/save.cc (save_bfs::start): Call print_acc().
	(save_bfs::print_acc): New function extracted from save_bfs::start().
	Escape each acceptance condition.
	(save_bfs::process_state): Use escape_str() and print_acc()

	* src/ltlvisit/tostring.cc
	(to_string_visitor::visit(const atomic_prop*)): Quote propositions
	that start with F, G, or X.
	* src/ltltest/tostring.test: Test quoted propositions.
	* src/tgbaalgos/save.cc (save_bfs::process_state): Escape " and \
	characters in formulae.
	* src/tgbatest/readsave.test: Test for this.

	* src/tgbaalgos/reachiter.hh: Typos in comments.

	* iface/gspn/eesrg.cc (tgba_gspn_eesrg::all_acceptance_conditions,
	tgba_gspn_eesrg::neg_acceptance_conditions): Forward to
	data_->operand.

	* src/tgbaalgos/emptinesscheck.cc (emptiness_check::complete_cycle):
	Do not skip this computation if from == to but the period is empty.

	* iface/gspn/eesrg.cc (state_gspn_eesrg::clone): Clone the right
	state.

	* iface/gspn/ltleesrg.cc: Emptinesscheck the full product, not
	the control automaton.

	* iface/gspn/eesrg.cc (tgba_gspn_eesrg::project_state): New method.
	* iface/gspn/eesrg.hh: Likewise.

2004-01-05  Alexandre Duret-Lutz  <adl@src.lip6.fr>

	* src/tgbaalgos/powerset.cc, src/tgbaalgos/powerset.hh: New files.
	* src/tgbaalgos/Makefile.am: Add them.
	* src/tgbatest/powerset.cc: New file.
	* src/tgbatest/Makefile.am: Construct powerset and expldot from
	powerset.cc.

	* src/tgbaalgos/reachiter.cc (tgba_reachable_iterator::run)
	Reuse s->second to avoid a hash lookup.
	* src/tgbaalgos/save.cc (save_bfs::process_state): Delete dest.

	* src/ltlparse/Makefile.am ($(FROM_LTLPARSE_YY_MAIN)):
	Use $(FROM_LTLPARSE_YY_MAIN), not $@, because $@ can contains
	VPATH and we do not want Bison to see absolute paths.
	* src/tgbaparse/Makefile.am ($(FROM_TGBAPARSE_YY_MAIN)): Likewise.

	* src/ltltest/parseerr.test: Adjust.
	* src/ltlparse/ltlparse.yy: Simplify error handling now that Bison
	will call destructors.  Give each operator a full name, so that
	Bison uses it in error messages.

2003-12-30  Alexandre Duret-Lutz  <adl@src.lip6.fr>

	* iface/gspn/ltleesrg.cc: New file.
	* iface/gspn/Makefile.am (check_PROGRAMS): Add ltleesrg.
	(ltleesrg_LDADD, ltleesrg_SOURCES): New variables.

	* src/ltltest/defs.in (run): Rerun valgrind with --leak-check=yes.
	* src/ltlparse/ltlparse.yy: Add `%destructor's.

2003-12-29  Alexandre Duret-Lutz  <adl@src.lip6.fr>

	* src/ltltest/defs.in (run): New function, run valgrind.
	* src/ltltest/equals.test, src/ltltest/lunabbrev.test,
	src/ltltest/nenoform.test, src/ltltest/parse.test,
	src/ltltest/parseerr.test, src/ltltest/tostring.test,
	src/ltltest/tunabbrev.test, src/ltltest/tunenoform.test: Use run().
	* Makefile.am (EXTRA_DIST): Don't list the m4/*.m4 files,
	Automake 1.8 find them automatically.
	* configure.ac: Require Automake 1.8, in gnits mode, and check
	for valgrind.
	* THANKS: New empty file.

	* doc/Doxyfile.in: Upgrade to Doxygen 1.3.5.  Build
	documentation for iface/.
	* dox/mainpage.dox: Fix reference to ltl_to_tgba.
	* src/ltlenv/environment.hh: Typo.

2003-12-03  Alexandre Duret-Lutz  <adl@src.lip6.fr>

	* src/tgba/tgbaexplicit.cc, src/tgba/tgbaexplicit.hh
	(tgba_explicit::merge_transitions): New method.
	* src/tgbaalgos/ltl2tgba_fm.cc (ltl_to_tgba_fm): Factorize all
	variables (not just Next and A) when computing prime implicants,
	and then call merge_transitions().

2003-12-01  Alexandre Duret-Lutz  <adl@src.lip6.fr>

	* configure.ac: Bump version to 0.0m.

	* configure.ac, NEWS: Bump version to 0.0l.
	* doc/Makefile.am ($(srcdir)/spotref.pdf): Do not assume spot.latex is
	in the srcdir.

2003-11-28  Alexandre Duret-Lutz  <adl@src.lip6.fr>

	* src/tgbaparse/tgbaparse.yy (cond_list): Simplify into...
	(condition): ... this.  We now accept only one condition, which
	is a formula.
	* src/tgba/tgbaexplicit.hh (tgba_explicit::add_neg_condition,
	tgba_explicit::get_condition): Remove, unused.
	* src/tgba/tgbaexplicit.cc: Likewise.

	* iface/gspn/eesrg.cc, iface/gspn/eesrg.hh, iface/gspn/gspn.cc,
	iface/gspn/gspn.hh, src/tgba/bdddict.cc, src/tgba/bdddict.hh,
	src/tgba/bddprint.hh, src/tgba/succiter.hh,
	src/tgba/succiterconcrete.cc, src/tgba/succiterconcrete.hh,
	src/tgba/tgba.hh, src/tgba/tgbabddconcrete.cc,
	src/tgba/tgbabddconcrete.hh, src/tgba/tgbabddconcretefactory.cc,
	src/tgba/tgbabddconcretefactory.hh, src/tgba/tgbabddcoredata.cc,
	src/tgba/tgbabddcoredata.hh, src/tgba/tgbaexplicit.cc,
	src/tgba/tgbaexplicit.hh, src/tgba/tgbaproduct.cc,
	src/tgba/tgbaproduct.hh, src/tgba/tgbatba.cc, src/tgba/tgbatba.hh,
	src/tgbaalgos/dotty.cc, src/tgbaalgos/dupexp.cc,
	src/tgbaalgos/emptinesscheck.cc, src/tgbaalgos/emptinesscheck.hh,
	src/tgbaalgos/lbtt.cc, src/tgbaalgos/lbtt.hh,
	src/tgbaalgos/ltl2tgba_fm.cc, src/tgbaalgos/ltl2tgba_lacim.cc,
	src/tgbaalgos/save.cc, src/tgbatest/explicit.cc,
	src/tgbatest/ltl2tgba.cc, src/tgbaparse/tgbaparse.yy,
	wrap/python/tests/ltl2tgba.py:
	Rewrite `accepting condition' as `acceptance condition'.
	The symbols which have been renamed are:
	tgba::all_accepting_conditions
	tgba::neg_accepting_conditions
	succ_iterator::current_accepting_conditions
	bdd_dict::register_accepting_variable
	bdd_dict::register_accepting_variables
	bdd_dict::is_registered_accepting_variable
	tgba_bdd_concrete_factory::declare_accepting_condition
	tgba_bdd_core_data::accepting_conditions
	tgba_bdd_core_data::all_accepting_conditions
	tgba_explicit::declare_accepting_condition
	tgba_explicit::complement_all_accepting_conditions
	tgba_explicit::has_accepting_condition
	tgba_explicit::get_accepting_condition
	tgba_explicit::add_accepting_condition
	tgba_explicit::all_accepting_conditions
	tgba_explicit::neg_accepting_conditions
	state_tba_proxy::acceptance_cond
	accepting_cond_splitter

2003-11-26  Alexandre Duret-Lutz  <adl@src.lip6.fr>

	* src/tgbaalgos/ltl2tgba_fm.cc (ltl_trad_visitor::visit) <G>:
	Optimize translation of GFy.

	* src/tgba/bddprint.cc (print_accset_handler, bdd_print_accset): New
	functions.
	* src/tgba/bddprint.cc (bdd_print_accset): Declare it.
	* src/tgbaalgos/dotty.cc (dotty_bfs::process_link): Use it.
	* src/tgbatest/tgbaread.test, src/tgbatest/explicit.test: Adjust
	expected output.

2003-11-25  Alexandre Duret-Lutz  <adl@src.lip6.fr>

	* src/tgbaparse/tgbaparse.yy: Remove a random character.
	* src/tgba/formula2bdd.cc: Include cassert.

2003-11-24  Alexandre Duret-Lutz  <adl@src.lip6.fr>

	Explicit automata can now have arbitrary logic formula on their
	arcs.  ltl2tgba_fm benefits from this and join multiple arcs with
	the same destination and acceptance conditions.
	* src/tgba/formula2bdd.cc, src/tgba/formula2bdd.hh: New files.
	* src/tgba/Makefile.am (tgba_HEADERS, libtgba_la_SOURCES): Add them.
	* src/tgba/bddprint.cc, src/tgba/bddprint.hh (bdd_pring_formula,
	bdd_format_formula): New functions.
	* src/tgba/tgbaexplicit.hh (tgba_explicit::get_condition,
	tgba_explicit::add_condition, tgba_explicit::add_neg_condition,
	tgba_explicit::declare_accepting_condition,
	tgba_explicit::has_accepting_condition,
	tgba_explicit::get_accepting_condition,
	tgba_explicit::add_accepting_condition): Take a const formula*.
	* src/tgba/tgbaexplicit.cc (tgba_explicit::add_condition):
	Rewrite using formula_to_bdd.
	* src/tgbaalgos/dotty.cc (dotty_bfs::process_link): Use
	bdd_print_formula to display conditions.
	* src/tgbaalgos/save.cc (save_bfs::process_state): Likewise.
	* src/tgbaalgos/ltl2tgba_fm.cc (translate_dict::bdd_to_formula):
	New function.
	(translate_dict::conj_bdd_to_atomic_props): Remove.
	(ltl_to_tgba_fm): Factor successors on accepting conditions
	and destinations, not conditions.  Use bdd_to_formula to translate
	the conditions.
	* src/tgbaparse/tgbaparse.yy: Expect conditions as a formula
	in a string, call the LTL parser for this.
	* src/tgbaparse/tgbascan.ll: Process \" and \\ escapes in
	strings.
	* src/tgbatest/emptchke.test, src/tgbatest/explicit.test,
	src/tgbatest/explpro2.test, src/tgbatest/explpro3.test,
	src/tgbatest/explprod.test, src/tgbatest/mixprod.test,
	src/tgbatest/readsave.test, src/tgbatest/tgbaread.test,
	src/tgbatest/tripprod.test: Adjust to new syntax for explicit
	automata.

	* src/misc/minato.hh (minato_isop(bdd,bdd)): New constructor variant.
	(minato_isop::local_vars::vars): New attribute.
	(minato_isop::local_vars::local_vars): Add the vars arguments.
	(minato_isop::todo, minato_isop::cube, minato_isop::ret): Rename as ...
	(minato_isop::todo_, minato_isop::cube_, minato_isop::ret_): ... these.
	* src/misc/minato.cc: Adjust to factorize only variables in vars.

	* m4/devel.m4: Fix quoting and simplify default setting of
	enable_devel.

2003-11-21  Alexandre Duret-Lutz  <adl@src.lip6.fr>

	* AUTHORS: New file.
	* configure.ac (AM_INIT_AUTOMAKE): Remove `foreign' option.

	* COPYING: New file.
	* Makefile.am, configure.ac, doc/Makefile.am, iface/Makefile.am,
	iface/gspn/Makefile.am, iface/gspn/common.cc,
	iface/gspn/common.hh, iface/gspn/dottyeesrg.cc,
	iface/gspn/dottygspn.cc, iface/gspn/eesrg.cc, iface/gspn/eesrg.hh,
	iface/gspn/gspn.cc, iface/gspn/gspn.hh, iface/gspn/ltlgspn.cc,
	src/Makefile.am, src/ltlast/Makefile.am, src/ltlast/allnodes.hh,
	src/ltlast/atomic_prop.cc, src/ltlast/atomic_prop.hh,
	src/ltlast/binop.cc, src/ltlast/binop.hh, src/ltlast/constant.cc,
	src/ltlast/constant.hh, src/ltlast/formula.cc,
	src/ltlast/formula.hh, src/ltlast/multop.cc, src/ltlast/multop.hh,
	src/ltlast/predecl.hh, src/ltlast/refformula.cc,
	src/ltlast/refformula.hh, src/ltlast/unop.cc, src/ltlast/unop.hh,
	src/ltlast/visitor.hh, src/ltlenv/Makefile.am,
	src/ltlenv/defaultenv.cc, src/ltlenv/defaultenv.hh,
	src/ltlenv/environment.hh, src/ltlparse/Makefile.am,
	src/ltlparse/fmterror.cc, src/ltlparse/ltlparse.yy,
	src/ltlparse/ltlscan.ll, src/ltlparse/parsedecl.hh,
	src/ltlparse/public.hh, src/ltltest/Makefile.am,
	src/ltltest/defs.in, src/ltltest/equals.cc,
	src/ltltest/equals.test, src/ltltest/lunabbrev.test,
	src/ltltest/nenoform.test, src/ltltest/parse.test,
	src/ltltest/parseerr.test, src/ltltest/readltl.cc,
	src/ltltest/tostring.cc, src/ltltest/tostring.test,
	src/ltltest/tunabbrev.test, src/ltltest/tunenoform.test,
	src/ltlvisit/Makefile.am, src/ltlvisit/clone.cc,
	src/ltlvisit/clone.hh, src/ltlvisit/destroy.cc,
	src/ltlvisit/destroy.hh, src/ltlvisit/dotty.cc,