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".

2 files changed, 19 insertions, 0 deletions

diff --git a/doc/changelog/04-tactics/11522-master+pose-proof-wo-as-syntax.rst b/doc/changelog/04-tactics/11522-master+pose-proof-wo-as-syntax.rst
new file mode 100644
index 0000000000..579ccf839f
--- /dev/null
+++ b/doc/changelog/04-tactics/11522-master+pose-proof-wo-as-syntax.rst
@@ -0,0 +1,6 @@
+- **Added:**
+  Syntax :tacn:`pose proof (@ident:=@term)` as an
+  alternative to `pose proof @term as @ident`, following the model of
+  :tacn:`pose (@ident:=@term)`
+  (`#11522 <https://github.com/coq/coq/pull/11522>`_,
+  by Hugo Herbelin).
diff --git a/doc/sphinx/proof-engine/tactics.rst b/doc/sphinx/proof-engine/tactics.rst
index 6a0ce20c79..206342fef1 100644
--- a/doc/sphinx/proof-engine/tactics.rst
+++ b/doc/sphinx/proof-engine/tactics.rst
@@ -1452,6 +1452,19 @@ Controlling the proof flow
    While :tacn:`pose proof` expects that no existential variables are generated by
    the tactic, :tacn:`epose proof` removes this constraint.
 
+.. tacv:: pose proof (@ident := @term)
+
+   This is an alternative syntax for :n:`assert (@ident := @term)` and
+   :n:`pose proof @term as @ident`, following the model of :n:`pose
+   (@ident := @term)` but dropping the value of :token:`ident`.
+
+.. tacv:: epose proof (@ident := @term)
+
+   This is an alternative syntax for :n:`eassert (@ident := @term)`
+   and :n:`epose proof @term as @ident`, following the model of
+   :n:`epose (@ident := @term)` but dropping the value of
+   :token:`ident`.
+
 .. tacv:: enough (@ident : @type)
    :name: enough