* spot/twaalgos/toparity.cc: Do not call prpagate_marks_here twice if
the automaton was not degeneralized.
* spot/twaalgos/toparity.hh: Typo in comment.
Under that option, !(a ^ b) was converted
to (!a <=> !b) instead of simply (a <=> b).
* spot/tl/simplify.cc (equiv_or_xor): Improve
rewriting.
* tests/core/ltl2tgba2.test, tests/python/simstate.py: Adjust test
cases.
Reported by Salomon Sickert.
* bin/ltlcross.cc: Also call determinize_unknown_acceptance() for
positive automata.
* tests/core/ltlcross3.test: Add another test case.
* NEWS: Mention the fix.
Fixes#420 reported by Salomon Sickert.
* bin/ltlcross.cc: Call determine_unknown_acceptance().
* spot/twaalgos/sccinfo.cc, spot/twaalgos/sccinfo.hh: Document
that one_accepting_scc()==-1 can mean "don't know", and update
determine_unknown_acceptance() to set one_acc_scc_.
* tests/core/ltlcross3.test: Add test case.
* NEWS: Mention the fixes.
Fixes#411 reported by Frantiček Blahoudek.
* bin/ltlcross.cc: Catch the issue.
* tests/core/ltlcross6.test: New file.
* tests/Makefile.am: Add it.
* NEWS: Mention it.
Reported by Florian Renkin.
* spot/twaalgos/emptiness.cc (reduce): If the automaton uses Fin
acceptance, check the reduced cycle and revert to the original cycle
if necessary.
* tests/python/intrun.py: New file.
* tests/Makefile.am: Add it.
* spot/twaalgos/emptiness.hh: Improve documentation.
* spot/twaalgos/genem.cc: In the spot29 implementation for the generic
case, when Fin(fo)=true and Fin(fo)=false have to be tested
separately, the second test can be done by a loop instead of a
recursion, to avoid unnecessary processing of the acceptance
condition. Suggested by Jan Strejček.
Use ltldo:... instead of error:... and warning:... and also improve
the diagnostic displayed after a translation failure to mention the
tool and formula.
Incidentally, this fixes a spurious test case failure observed by
Philipp Schlehuber on CentOS7.7 where glibc 2.17 is installed. With
this system, when posix_spawn() starts a binary that does not exist,
it returns success and let the child die with exit code 127. On more
recent glibc, posix_spawn() manages to return execve()'s errno, as if
the child had not been created. We handle those two different ways to
fail, but before this patch one used to print "error:..." and the
other "ltldo:...".
* bin/ltldo.cc: Display the program_name in error message. Display
the command name and formula on translation failure.
* tests/core/ltldo.test: Adjust test case.
* NEWS: Mention the fix.
Bison <3.6 used to complain about "$undefined", while Bison >=3.6 now
write "invalid token".
* tests/core/parseaut.test, tests/core/parseerr.test,
tests/core/sugar.test: Adjust expected diagnostics to match Bison pre
and post 3.6.
Closes#405. This shows no difference on the test suite,
but that is thanks to the previous patch: without it, an
example in automata.ipynb would have an extra edge.
* spot/twaalgos/cleanacc.cc (simplify_acceptance): Call
unit_propagation() before simplify_complementary_marks_here() and
fuse_marks_here(), because that is simpler to perform.
* spot/twaalgos/remfin.cc (default_strategy): Detect transitions
from the main copy that are completely accepting and that do not
need to be repeated in the clones.
* tests/python/remfin.py: Add a test case.
* tests/core/ltl2dstar4.test: Improve expected results.
* NEWS: Mention the change.
This remove some restrictions that prevented fuse_marks_here from
simplifying certain patterns, as noted in the first comment of
issue #405.
* spot/twaalgos/cleanacc.cc (find_interm_rec, find_fusable): Remove
some unnecessary restrictions to singleton marks, and replace the hack
put one non-singleton mark at the beginning of the singleton list by a
sort.
* tests/python/simplacc.py: Add two test cases.
* tests/python/automata.ipynb, tests/core/remfin.test: Improve
expected results.
* NEWS: Mention the bug.
