Hi Akim, Sorry but I don't understand this:
> $ bison --trace=help > bison: invalid argument ‘help’ for ‘--trace’ > Valid arguments are: > - ‘none - no traces’ > - ‘scan - grammar scanner traces’ > - ‘parse - grammar parser traces’ > - ‘parse-stats - grammar parser stats’ > - ‘automaton - construction of the automaton’ > - ‘bitsets - use of bitsets’ > - ‘closure - input/output of closure’ > - ‘grammar - reading, reducing the grammar’ > - ‘resource - memory consumption (where available)’ > - ‘sets - grammar sets: firsts, nullable etc.’ > - ‘muscles - m4 definitions passed to the skeleton’ > - ‘tools - m4 invocation’ > - ‘m4 - m4 traces’ > - ‘skeleton - skeleton postprocessing’ > - ‘time - time consumption’ > - ‘ielr - IELR conversion’ > - ‘all - all of the above’ Why not: $ bison --trace=help bison: invalid argument ‘help’ for ‘--trace’ Valid arguments are: - ‘none’ - no traces - ‘scan’ - grammar scanner traces - ‘parse’ - grammar parser traces - ‘parse-stats’ - grammar parser stats - ‘automaton’ - construction of the automaton - ‘bitsets’ - use of bitsets - ‘closure’ - input/output of closure - ‘grammar’ - reading, reducing the grammar - ‘resource’ - memory consumption (where available) - ‘sets’ - grammar sets: firsts, nullable etc. - ‘muscles’ - m4 definitions passed to the skeleton - ‘tools’ - m4 invocation - ‘m4’ - m4 traces - ‘skeleton’ - skeleton postprocessing - ‘time’ - time consumption - ‘ielr’ - IELR conversion - ‘all’ - all of the above > + Accept arguments with a documentation string, such as: > + "foo - a first feature" -> 0 > + "bar - a second feature" -> 1 It doesn't make sense to me to expect that the user will type bison --trace='none - no traces' when they can type bison --trace=none Bruno
