* src/ltltest/tostring.cc: New files. * src/ltlvisit/tostring.hh: From ast to string New files. * src/ltlvisit/tostring.cc: From ast to string New files.
src/ltlast/constant.hh, src/ltlast/formula.hh, src/ltlast/multop.hh, src/ltlast/unop.hh, src/ltlast/visitor.hh, src/ltlenv/defaultenv.hh, src/ltlenv/environment.hh, src/ltlparse/public.hh, src/ltlvisit/clone.hh, src/ltlvisit/dotty.hh, src/ltlvisit/dump.hh, src/ltlvisit/equals.hh, src/ltlvisit/lunabbrev.hh, src/ltlvisit/nenoform.hh, src/ltlvisit/tunabbrev.hh: Add Doxygen comments. * src/visitor.hh: Do not use const_sel. This clarify the code and helps Doxygen.
* src/ltlast/formula.hh: ... this. * src/ltlast/Makefile.am (libltlast_a_SOURCES): Adjust. * src/ltlast/formula.hh (formulae): Rename as ... (formula): ... this. Adjust all uses.
* src/ltlvisit/Makefile.am (libltlvisit_a_SOURCES): Add equals.hh and equals.cc. * src/ltltest/equals.cc, src/ltltest/equals.test: New files. * src/ltltest/Makefile.am (check_PROGRAMS): Add equals. (equals_SOURCES): New variable. (TESTS): Add equals.test.
