From f25e08d6187a84be2fce73624fdc124ded5a7879 Mon Sep 17 00:00:00 2001
From: Ron Kok <ronkok@comcast.net>
Date: Thu, 3 May 2018 13:58:04 -0700
Subject: [PATCH] =?UTF-8?q?Support=20Unicode=20=E2=89=98=E2=89=99=E2=89=9A?=
 =?UTF-8?q?=E2=89=9B=E2=89=9D=E2=89=9E=E2=89=9F=20(#1274)?=
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

* Support Unicode stackrel

Supports Unicode characters ≘ ≙ ≚ ≛ ≝ ≞ ≟

* Fix lint error

* Delete unnecessary braces
---
 src/macros.js      | 10 ++++++++++
 test/katex-spec.js |  2 +-
 2 files changed, 11 insertions(+), 1 deletion(-)

diff --git a/src/macros.js b/src/macros.js
index 8799d2fe..85f53284 100644
--- a/src/macros.js
+++ b/src/macros.js
@@ -151,6 +151,16 @@ defineMacro("\\llap", "\\mathllap{\\textrm{#1}}");
 defineMacro("\\rlap", "\\mathrlap{\\textrm{#1}}");
 defineMacro("\\clap", "\\mathclap{\\textrm{#1}}");
 
+// Unicode stacked relations
+defineMacro("\u2258",
+    "\\mathrel{=\\kern{-1em}\\raisebox{0.4em}{$\\scriptsize\\frown$}}");
+defineMacro("\u2259", "\\stackrel{\\tiny\\wedge}{=}");
+defineMacro("\u225A", "\\stackrel{\\tiny\\vee}{=}");
+defineMacro("\u225B", "\\stackrel{\\scriptsize\\star}{=}");
+defineMacro("\u225D", "\\stackrel{\\tiny\\mathrm{def}}{=}");
+defineMacro("\u225E", "\\stackrel{\\tiny\\mathrm{m}}{=}");
+defineMacro("\u225F", "\\stackrel{\\tiny?}{=}");
+
 //////////////////////////////////////////////////////////////////////
 // amsmath.sty
 // http://mirrors.concertpass.com/tex-archive/macros/latex/required/amsmath/amsmath.pdf
diff --git a/test/katex-spec.js b/test/katex-spec.js
index 1830d4fc..2d2cb613 100644
--- a/test/katex-spec.js
+++ b/test/katex-spec.js
@@ -2982,7 +2982,7 @@ describe("Unicode", function() {
     });
 
     it("should parse more relations", function() {
-        expect("⊂⊃⊆⊇⊏⊐⊑⊒⊢⊣⊩⊪⊸⋈⋍⋐⋑⋔⋛⋞⋟⌢⌣⩾⪆⪌⪕⪖⪯⪰⪷⪸⫅⫆").toParse();
+        expect("⊂⊃⊆⊇⊏⊐⊑⊒⊢⊣⊩⊪⊸⋈⋍⋐⋑⋔⋛⋞⋟⌢⌣⩾⪆⪌⪕⪖⪯⪰⪷⪸⫅⫆≘≙≚≛≝≞≟").toBuild();
     });
 
     it("should parse symbols", function() {