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authorHugo Herbelin2015-05-01 10:21:36 +0200
committerHugo Herbelin2015-05-01 10:39:27 +0200
commit857e82b2ca0d164242070599b66138cc431509c9 (patch)
treedaeabc761c5710a1c4d156f8183b253c75bb80f9 /test-suite
parent5fc6e3a9e8fdd81be83194bbd62093993ddd4b01 (diff)
Giving to "subst" a more natural semantic (fixing #4214) by using all
equalities in configurations like x=y x=z === P(x,y,z) where it now produces === P(z,z,z) In particular (equations are processed from most ancient to most recent). Thanks to this, a "repeat subst" can just be a "subst" in List.v. Incidentally: moved a nf_enter to enter in subst_one, since the latter is normally called from other tactics having normalized evars.
Diffstat (limited to 'test-suite')
-rw-r--r--test-suite/bugs/closed/4214.v5
1 files changed, 5 insertions, 0 deletions
diff --git a/test-suite/bugs/closed/4214.v b/test-suite/bugs/closed/4214.v
new file mode 100644
index 0000000000..cd53c898e9
--- /dev/null
+++ b/test-suite/bugs/closed/4214.v
@@ -0,0 +1,5 @@
+(* Check that subst uses all equations around *)
+Goal forall A (a b c : A), b = a -> b = c -> a = c.
+intros.
+subst.
+reflexivity.