Fixing #5762 (supporting imp. args. in "where" clause of an inductive def.).

This allows e.g. the following to work:

Reserved Notation "* a" (at level 70).
Inductive P {n : nat} : nat -> Prop := c m : *m where "* m" := (P m).

We seize this opportunity to make main calls to Metasyntax to depend
on an arbitrary env rather than on Global.env.

Incidentally, this fixes a little coqdoc bug in classifying the
inductive type referred to in the "where" clause.

3 files changed, 30 insertions, 2 deletions

diff --git a/test-suite/bugs/closed/5762.v b/test-suite/bugs/closed/5762.v
new file mode 100644
index 0000000000..edd5c8d73d
--- /dev/null
+++ b/test-suite/bugs/closed/5762.v
@@ -0,0 +1,28 @@
+(* Supporting imp. params. in inductive or fixpoints mutually defined with a notation *)
+
+Reserved Notation "* a" (at level 70).
+Inductive P {n : nat} : nat -> Prop :=
+| c m : *m
+where "* m" := (P m).
+
+Reserved Notation "##".
+Inductive I {A:Type} := C : ## where "##" := I.
+
+(* The following was working in 8.6 *)
+
+Require Import Vector.
+
+Reserved Notation "# a" (at level 70).
+Fixpoint f {n : nat} (v:Vector.t nat n) : nat :=
+  match v with
+  | nil _ => 0
+  | cons _ _ _ v => S (#v)
+  end
+where "# v" := (f v).
+
+(* The following was working in 8.6 *)
+
+Reserved Notation "%% a" (at level 70).
+Record R :=
+  {g : forall {A} (a:A), a=a where "%% x" := (g x);
+   k : %% 0 = eq_refl}.
diff --git a/test-suite/coqdoc/links.html.out b/test-suite/coqdoc/links.html.out
index 7d7d01c1b4..e2928f78d4 100644
--- a/test-suite/coqdoc/links.html.out
+++ b/test-suite/coqdoc/links.html.out
@@ -76,7 +76,7 @@ Various checks for coqdoc
 <br/>
 <span class="id" title="keyword">Inductive</span> <a name="eq"><span class="id" title="inductive">eq</span></a> (<span class="id" title="var">A</span>:<span class="id" title="keyword">Type</span>) (<span class="id" title="var">x</span>:<a class="idref" href="Coqdoc.links.html#A"><span class="id" title="variable">A</span></a>) : <span class="id" title="var">A</span> <a class="idref" href="http://coq.inria.fr/stdlib/Coq.Init.Logic.html#d43e996736952df71ebeeae74d10a287"><span class="id" title="notation">-&gt;</span></a> <span class="id" title="keyword">Prop</span> := <a name="eq_refl"><span class="id" title="constructor">eq_refl</span></a> : <a class="idref" href="Coqdoc.links.html#x"><span class="id" title="variable">x</span></a> <a class="idref" href="Coqdoc.links.html#8f9364556521ebb498093f28eea2240f"><span class="id" title="notation">=</span></a> <a class="idref" href="Coqdoc.links.html#x"><span class="id" title="variable">x</span></a> <a class="idref" href="Coqdoc.links.html#8f9364556521ebb498093f28eea2240f"><span class="id" title="notation">:&gt;</span></a><a class="idref" href="Coqdoc.links.html#A"><span class="id" title="variable">A</span></a><br/>
 <br/>
-<span class="id" title="keyword">where</span> <a name="8f9364556521ebb498093f28eea2240f"><span class="id" title="notation">&quot;</span></a>x = y :&gt; A" := (@<a class="idref" href="Coqdoc.links.html#eq"><span class="id" title="variable">eq</span></a> <span class="id" title="var">A</span> <span class="id" title="var">x</span> <span class="id" title="var">y</span>) : <span class="id" title="var">type_scope</span>.<br/>
+<span class="id" title="keyword">where</span> <a name="8f9364556521ebb498093f28eea2240f"><span class="id" title="notation">&quot;</span></a>x = y :&gt; A" := (@<a class="idref" href="Coqdoc.links.html#eq"><span class="id" title="inductive">eq</span></a> <a class="idref" href="Coqdoc.links.html#A"><span class="id" title="variable">A</span></a> <a class="idref" href="Coqdoc.links.html#x"><span class="id" title="variable">x</span></a> <span class="id" title="var">y</span>) : <span class="id" title="var">type_scope</span>.<br/>
 
 <br/>
 <span class="id" title="keyword">Definition</span> <a name="eq0"><span class="id" title="definition">eq0</span></a> := 0 <a class="idref" href="Coqdoc.links.html#8f9364556521ebb498093f28eea2240f"><span class="id" title="notation">=</span></a> 0 <a class="idref" href="Coqdoc.links.html#8f9364556521ebb498093f28eea2240f"><span class="id" title="notation">:&gt;</span></a> <a class="idref" href="http://coq.inria.fr/stdlib/Coq.Init.Datatypes.html#nat"><span class="id" title="inductive">nat</span></a>.<br/>
diff --git a/test-suite/coqdoc/links.tex.out b/test-suite/coqdoc/links.tex.out
index 844fb3031c..de3182d1a0 100644
--- a/test-suite/coqdoc/links.tex.out
+++ b/test-suite/coqdoc/links.tex.out
@@ -59,7 +59,7 @@ Various checks for coqdoc
 \coqdocnoindent
 \coqdoceol
 \coqdocnoindent
-\coqdockw{where} \coqdef{Coqdoc.links.:type scope:x '=' x ':>' x}{"}{"}x = y :> A" := (@\coqdocvariable{eq} \coqdocvar{A} \coqdocvar{x} \coqdocvar{y}) : \coqdocvar{type\_scope}.\coqdoceol
+\coqdockw{where} \coqdef{Coqdoc.links.:type scope:x '=' x ':>' x}{"}{"}x = y :> A" := (@\coqref{Coqdoc.links.eq}{\coqdocinductive{eq}} \coqdocvariable{A} \coqdocvariable{x} \coqdocvar{y}) : \coqdocvar{type\_scope}.\coqdoceol
 \coqdocemptyline
 \coqdocnoindent
 \coqdockw{Definition} \coqdef{Coqdoc.links.eq0}{eq0}{\coqdocdefinition{eq0}} := 0 \coqref{Coqdoc.links.:type scope:x '=' x ':>' x}{\coqdocnotation{=}} 0 \coqref{Coqdoc.links.:type scope:x '=' x ':>' x}{\coqdocnotation{:>}} \coqexternalref{nat}{http://coq.inria.fr/stdlib/Coq.Init.Datatypes}{\coqdocinductive{nat}}.\coqdoceol