lean4-htt

Lean 4 fork for HoTT-compatible kernel extensions (Path types, transport, HITs). Maintained against upstream leanprover/lean4.

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Leonardo de Moura 641a4548b6 fix(library/tactic/cases_tactic): use inj_arrow instead no_confusion when index is a nested and/or mutually recursive datatype The `no_confusion` construction is only generated for inductive datatypes supported in the kernel. Before this commit, given `h : T`, `cases h` could leak the internal encoding used by the inductive compiler WHEN a nested and/or mutual inductive datatype is used to index the inductive datatype `T`. The new test exposes the problem. The solution implemented in this commit uses inj_arrow lemmas generated by the inductive compiler. We only use the lemmas if the target is a proposition. If it is not, we sign an error. The reason for this limitation is documented in the source code. cc @jroesch @dselsam Jared: the information leakage has been fixed. So, students will not be confused by the internal encoding used in the inductive compiler. I added the example I posted on slack as a new test. Note that, the workaround I used has been removed.		2017-11-27 21:56:35 -08:00
.github	chore(.github/CONTRIBUTING): fix typos and URLs	2017-10-30 16:23:22 +01:00
bin	chore(bin): remove obsolete files	2017-11-12 12:04:47 +01:00
doc	feat(frontends/lean/{parser,elaborator}): structure instance patterns	2017-11-22 12:16:28 -08:00
extras/latex	chore(extras/depgraph): remove leandeps	2017-07-15 02:27:17 -07:00
images	chore(CMakeLists.txt): move Lean logo to make sure we can test leanemacs without installing Lean	2015-01-31 17:38:49 -08:00
leanpkg	fix(leanpkg): fix error message	2017-09-14 18:48:18 +02:00
library	chore(library): remove id_locked	2017-11-22 16:29:04 -08:00
script	chore(script/package_registry): remove library_dev from test suite	2017-08-17 07:41:35 -07:00
src	fix(library/tactic/cases_tactic): use inj_arrow instead no_confusion when index is a nested and/or mutually recursive datatype	2017-11-27 21:56:35 -08:00
tests	fix(library/tactic/cases_tactic): use inj_arrow instead no_confusion when index is a nested and/or mutually recursive datatype	2017-11-27 21:56:35 -08:00
tmp	feat(library/init/data): start rbtree module	2017-11-15 16:17:39 -08:00
.appveyor.yml	chore(.appveyor.yml,.travis.yml): simplify using glob patterns	2017-07-26 17:13:34 +02:00
.clang-format	feat(library/vm/process): add basic process support	2017-03-28 18:08:06 -07:00
.codecov.yml	fix(.codecov.yml): do not fail github ci if coverage drops by 0.01%	2017-06-25 10:35:02 +02:00
.gitignore	chore(gitignore): ignore nix files	2017-06-19 13:16:04 +02:00
.travis.yml	chore(.travis.yml): undo Travis update	2017-09-15 12:33:46 -07:00
LICENSE	Add LICENSE file	2013-07-15 18:55:48 -07:00
README.md	chore(src/emacs): move lean-mode to https://github.com/leanprover/lean-mode	2017-10-06 10:46:43 -07:00