Adding an alias "pose proof (x:=a)" for "pose proof a as x".

This is to be consistent with "pose (x:=a)" (and an alternative to
"assert (x:=a)").

This was suggested by
"https://github.com/HoTT/HoTT/pull/1208#discussion_r374342962".

1 files changed, 9 insertions, 0 deletions

diff --git a/test-suite/success/pose.v b/test-suite/success/pose.v
new file mode 100644
index 0000000000..17007915fe
--- /dev/null
+++ b/test-suite/success/pose.v
@@ -0,0 +1,9 @@
+(* Test syntax *)
+
+Goal 0=0.
+pose proof (a := I).
+Fail clearbody a.
+epose proof (b := fun _ => eq_refl).
+Fail clearbody b.
+exact (b a).
+Qed.