coq - The formal proof system

Age	Commit message (Collapse)	Author
2020-05-14	[exn] [tactics] improve backtraces on monadic errors	Emilio Jesus Gallego Arias
	Current backtraces for tactics leave a bit to desire, for example given the program: ```coq Lemma u n : n + 0 = n. rewrite plus_O_n. ``` the backtrace stops at: ``` Found no subterm matching "0 + ?M160" in the current goal. Called from file "proofs/proof.ml", line 381, characters 4-42 Called from file "tactics/pfedit.ml", line 102, characters 31-58 Called from file "plugins/ltac/g_ltac.mlg", line 378, characters 8-84 ``` Backtrace information `?info` is as of today optional in some tactics, such as `tclZERO`, it doesn't cost a lot however to reify backtrace information indeed in `tclZERO` and provide backtraces for all tactic errors. The cost should be small if we are not in debug mode. The backtrace for the failed rewrite is now: ``` Found no subterm matching "0 + ?M160" in the current goal. Raised at file "pretyping/unification.ml", line 1827, characters 14-73 Called from file "pretyping/unification.ml", line 1929, characters 17-53 Called from file "pretyping/unification.ml", line 1948, characters 22-72 Called from file "pretyping/unification.ml", line 2020, characters 14-56 Re-raised at file "pretyping/unification.ml", line 2021, characters 66-73 Called from file "proofs/clenv.ml", line 254, characters 12-58 Called from file "proofs/clenvtac.ml", line 95, characters 16-53 Called from file "engine/proofview.ml", line 1110, characters 40-46 Called from file "engine/proofview.ml", line 1115, characters 10-34 Re-raised at file "clib/exninfo.ml", line 82, characters 4-38 Called from file "proofs/proof.ml", line 381, characters 4-42 Called from file "tactics/pfedit.ml", line 102, characters 31-58 Called from file "plugins/ltac/g_ltac.mlg", line 378, characters 8-84 ``` which IMO is much better.
2020-05-06	Documenting plugin/tactic/stdlib keywords in corresponding chapters.	Hugo Herbelin
	Incidentally removing "discriminated", "(bfs)" and "(dfs)" from keywords. It is enough to make them normal identifiers. Note: - keywords reserved by the tactics are: ** [= _eqn \|- by using - keywords reserved by ltac are: lazymatch multimatch \|\|
2020-03-18	Update headers in the whole code base.	Théo Zimmermann
	Add headers to a few files which were missing them.
2019-06-17	Update ml-style headers to new year.	Théo Zimmermann

2019-03-26	Declare initial hint databases in prelude	Maxime Dénès
	Previously, they were hard-wired in the ML code.
2019-02-28	Fix #7632: Change syntax of autoapply according to the documentation.	Théo Zimmermann
	Deprecate the old syntax. The documented syntax was using a with clause which is more standard with a hint database than the using clause that was actually implemented.
2018-10-15	Port remaining EXTEND ml4 files to coqpp.	Pierre-Marie Pédrot
	Almost all of ml4 were removed in the process. The only remaining files are in the test-suite and probably need a bit of fiddling with coq_makefile, and there only two really remaning ml4 files containing code.