The main one is that crunch now uses wpsimp when determining whether a goal
can already be solved, instead of just wp. Crunch can also now use wps
when proving a goal and will now always ignore a constant if told to, even
if it is the top-level constant being crunched.
The main benefit of this is that everything in crunch is now ctrl clickable.
As an added benefit, supplied rules can now be modified by attributes when
needed.
The main aim of this is for crunch to make consistent decisions about
whether to prove new rules. If any rules in the wp set can be used to
directly solve the goal crunch is working on, then crunch will just
use it.
Other changes include:
- crunch_ignore works properly inside locales again.
- if a rule already exists with the specific name crunch is going
to use, but that rule does not solve the goal crunch is working on
then crunch will now error.
- if crunch fails to prove a goal it will now output a warning if
adding crunch_simps or crunch_wps would allow it to make more
progess.
It's just a parser tweak for crunch, and runs multiple crunch commands
with the same sections (wps, ignores, etc).
Also update the comments a little, and move them closer to the anchor of
command clicks (the @{command_keyword} antiquotation).
Substantial adjustments to crunch. Main user changes are:
- 'lift' and 'unfold' mechanisms replaced by more general 'rule'.
- some more 'ignores' standardised.
- crunch has a more principled overall design:
+ discover crunch rule
* provided or by definition extraction
+ recurse according to rule
+ prove goal based on rule, recursive discoveries, standard tactic
* wp/simp adjustments tweak tactic
Gerwin Klein
Corey Lewis
Thomas Sewell
Alejandro Gomez-Londono
Thomas Sewell
Corey Lewis
Gerwin Klein