From 00864b06356044980a4e77831cb290aa3cd51146 Mon Sep 17 00:00:00 2001
From: "Davide P. Cervone" <dpvc@union.edu>
Date: Tue, 7 Jun 2016 10:14:51 -0400
Subject: [PATCH] surround \middle with OPEN and CLOSE TeXAtoms, so that the
 spacing will be consistent with TeX's version (e.g.,
 \mathrel{}\middle|\mathrel{} will produce the right spacing).  As a side
 effect, this resolves the problem with the quotes, sot this resolves issue
 #1023.

---
 unpacked/jax/input/TeX/jax.js | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/unpacked/jax/input/TeX/jax.js b/unpacked/jax/input/TeX/jax.js
index 8463c8be36..4b36326af3 100644
--- a/unpacked/jax/input/TeX/jax.js
+++ b/unpacked/jax/input/TeX/jax.js
@@ -1335,9 +1335,11 @@
     
     Middle: function (name) {
       var delim = this.GetDelimiter(name);
+      this.Push(MML.TeXAtom().With({texClass:MML.TEXCLASS.CLOSE}));
       if (this.stack.Top().type !== "left")
         {TEX.Error(["MisplacedMiddle","%1 must be within \\left and \\right",name])}
       this.Push(MML.mo(delim).With({stretchy:true}));
+      this.Push(MML.TeXAtom().With({texClass:MML.TEXCLASS.OPEN}));
     },
     
     NamedFn: function (name,id) {