* NEWS, configure.ac: Set version 2.2.2.dev.

* NEWS, configure.ac, doc/org/setup.org: Update version.

* python/spot/__init__.py (automata): Do not create a session for
every command, this is only needed if automata() is run with a timeout
parameter.
* python/ajax/spotcgi.in: Adjust exclude the main process from
the process group, so that only children are killed on SIGALRM.
* NEWS: Mention the bug.

Reported by Shufang Zhu.

* spot/tl/ltlf.cc, spot/tl/ltlf.hh: Fix the transltion
and update the comments.
* tests/core/ltlfilt.test: Adjust test cases.
* NEWS: Mention the fix.
* THANKS: Add Shufang Zhu.

Compilation of each header file alone, as a safety check, was removed
when introducing "#pragma once" because we did not have to check for
possible double inclusion.  However we still need to compile each
header to make sure they are self-contained.

* tests/sanity/includes.test: Compile each header.
* tests/run.in: Export various compiler and directory flags.
* spot/twaalgos/emptiness_stats.hh, spot/misc/mspool.hh,
spot/misc/fixpool.hh: Include <spot/misc/common.hh>.
* spot/misc/common.hh: Include <cassert>.
* NEWS: Mention the fixed headers.

* spot/parseaut/parseaut.yy: Add a diagnostic.
* tests/core/parseaut.test: Test it.
* NEWS: Document it.

This should solve issue with the Debian package.

* spot/ltsmin/Makefile.am: Use the LTDLINC, LTDLDEPS and LIBLTDL as
documented.
* NEWS: Mention the fix.

Fix #198.  Reported by Maximilien Colange.

* spot/twaalgos/strength.cc (is_terminal): Test that no accepting
transition lead to a rejecting SCC.
* tests/core/strength.test: Add test case.
* spot/twaalgos/strength.hh, spot/twa/twa.hh, doc/org/concepts.org:
Adjust documentation.
* NEWS: Mention the fix.

Reported by František Blahoudek.

* spot/twaalgos/sccfilter.cc: Remove extra print statement.
* NEWS: Mention it.

* NEWS, configure.ac, doc/org/setup.org: Update.

* tests/core/ltl2tgba.test: Add new test-case,
reported by Tomáš Babiak.
* NEWS: Mention the bug fixed by previous patch.

* configure.ac, doc/org/setup.org, NEWS: Set version number.

* doc/org/oaut.org (Timing): New section.
* NEWS: Link to it.

* spot/twa/twa.hh, spot/twa/twa.cc (intersects, intersecting_run,
intersecting_word): New functions.
* NEWS: Mention them.
* doc/org/tut51.org, tests/python/bugdet.py: Use them.

Suggested by Juraj Major.

* spot/twaalgos/sccfilter.cc: Here.
* tests/python/sccfilter.py: New file.
* tests/Makefile.am: Add it.
* NEWS: Mention the news.

Reported by Juraj Major.

* spot/twa/twa.hh: check num_sets() in prop_state_acc() so we do not
have to set it in set_acceptance(), causing trouble if set_acceptance()
is called multiple times.
* tests/python/setacc.py: New test case.
* tests/Makefile.am: Add it.
* THANKS: Add Juraj.
* NEWS: Mention the bug.

* spot/twaalgos/remfin.cc: Do not add a sink states to deterministic
weak automata, and actually apply the "weak" Fin-removal to any weak
automaton.
* tests/core/explprod.test: Add a test case for the previous patch,
but that used to fail because of this bug.
* NEWS: Mention the bug.

* spot/parseaut/public.hh, spot/parseaut/scanaut.ll: When parsing
automata read from some given FD, do not close the file descriptor, as
the caller is likely to already close it, and closing FDs twice is very
bad.  This seems to have be the root of some issue we had with recent
jupyter versions, were 0MQ would crash with "Bad file descriptor"
messages.  Also do not close stdin while we are at it.
* NEWS: Mention the bug.

Fixes #189.

* bin/ltldo.cc: Here.
* tests/core/ltldo.test: Adjust and add test-case for %R.
* NEWS: Mention the change.

Alexandre GBAGUIDI AISSE authored Oct 24, 2016 and Alexandre Duret-Lutz committed Nov 08, 2016

For #189.

* NEWS: Update.
* bin/autfilt.cc: Replace stopwatch with process_timer.
* bin/dstar2tgba.cc: Replace stopwatch with process_timer.
* bin/ltl2tgba.cc: Replace stopwatch with process_timer.
* bin/ltlcross.cc: Replace stopwatch with process_timer.
* bin/ltldo.cc: Replace stopwatch with process_timer.
* bin/randaut.cc: Replace stopwatch with process_timer.
* bin/common_aoutput.hh: Implement process_timer, integrate it.
* bin/common_aoutput.cc: Integrate process_timer and implement new
print method.
* spot/misc/timer.hh: Modify timer class and timeinfo struct
i.e. add cutime (children_utime) and cstime (children_stime).
* spot/misc/timer.cc: Help code to behave as before all this.
* spot/twaalgos/dtbasat.cc: Help print_log to behave as before
all this.
* spot/twaalgos/dtwasat.cc: Help print_log to behave as before
all this.
* spot/misc/formater.hh: Add operator<< for spot::timer.

Fixes #187.

* spot/tl/ltlf.cc, spot/tl/ltlf.hh: New files.
* spot/tl/Makefile.am: Add them.
* bin/ltlfilt.cc: Add a new option.
* bin/man/ltlfilt.x: Add bibliographic reference.
* tests/core/ltlfilt.test: Add more tests.
* tests/python/ltlf.py: New file.
* tests/Makefile.am: Add it.
* python/spot/impl.i: Python bindings.
* NEWS: Mention it.

This fixes the incorrect output of tgba_determinize() reported yesterday
by Reuben Rowe.

* spot/twaalgos/simulation.cc: Do not purge unreachable states when
recording implications.
* tests/python/bugdet.py: New test case.
* tests/Makefile.am: Add it.
* THANKS: Add Reuben.
* NEWS: Mention the bug.

Fixes #193, reported by Etienne Renault.

* spot/parsetl/parsetl.yy: Clone printed formulas.
* tests/core/parse.test: Add test case.
* NEWS: Mention the issue.

These were not actually printing in "SERE" mode due to a copy/paste
error.  PVS-Studio seems really good at finding those.  For #192.

* spot/tl/print.cc: Fix it.
* NEWS: Mention the bug.

Fixes #190.

* NEWS, spot/misc/intvcomp.cc: here.

Fix an issue reported by Tomáš Babiak, who noticed that he could not
manage to have ltl2tgba process `genltl --go-theta=N` efficiently for
larger values of N.

* spot/twaalgos/translate.hh (set_level): Reset any owned LTL simplifier
whenever the optimization level is changed.
* NEWS: Mention the bug.

* spot/twaalgos/simulation.cc: Detect deterministic automata, and skip
the partial-order update.
* NEWS: Mention the speedup.

Related to #188.  This is a third fix that independently
makes `'utfilt --is-unambiguous -q smaller.hoa' instantaneous.

* spot/twaalgos/remfin.cc: Clean the received automaton if
necessary.
* bin/autfilt.cc: No need to call cleanup_acceptance_here() before
remove_fin() anymore.
* tests/core/remfin.test: Add an additional test.
* NEWS: Mention the change.

As observed in #188, the smaller.hoa automaton is made only of
1-state/1-self-loop SCCs, for which calling remove_fin is a complete
waste of time.  This patch alone (i.e., without the other changes
suggested by #188) improves the run time of

% autofilt -q --is-unambiguous smaller.hoa

from 38s to 0.05s.

* spot/twaalgos/sccinfo.cc: If a single-state SCC has undeterminate SCC
and only one self-loop, then it is necessarily rejecting.
* NEWS: Mention the change.

Avoid calling scc_info::determine_unknown_acceptance on the product, as
suggested in #188.

* spot/twaalgos/isunamb.cc (is_unambiguous): Rewrite.
* tests/core/unambig.test: Add the automaton from #188.
* NEWS: Mention the improved function.
* spot/twaalgos/mask.cc,
spot/twaalgos/mask.hh (mask_keep_accessible_states): New function.

* NEWS, configure.ac, doc/org/setup.org: Bump version.

* bench/dtgbasat/formulas: Typo.
* NEWS: Mention the fix.
* AUTHORS: Add Alexandre.

Suggested by František Blahoudek.

* bin/ltlcross.cc: Implement the two options.
* doc/org/ltlcross.org, NEWS: Document them.
* tests/core/complementation.test: Adjust test case.
* tests/core/ltlcross3.test, tests/core/unambig.test: More tests.

Report from František Blahoudek.

* bin/ltlcross.cc: Do not display stats for automata
that do not exist.
* tests/core/ltlcross3.test: Test it.
* NEWS: Mention the fix.