From 488ee5279a7b595c2999df9b689514b8b2887b18 Mon Sep 17 00:00:00 2001
From: Takeshi KOMIYA <i.tkomiya@gmail.com>
Date: Mon, 2 May 2016 11:03:32 +0900
Subject: [PATCH] Fix #2501: Unicode subscript numbers are normalized in LaTeX

---
 CHANGES                  |  1 +
 sphinx/util/texescape.py | 22 ++++++++++++++++++++--
 2 files changed, 21 insertions(+), 2 deletions(-)

diff --git a/CHANGES b/CHANGES
index 991f3db44..9f83a3310 100644
--- a/CHANGES
+++ b/CHANGES
@@ -48,6 +48,7 @@ Bugs fixed
 * #2460: too much white space on top of captioned literal blocks in PDF output
 * Show error reason when multiple math extensions are loaded (ref: #2499)
 * #2483: any figure number was not assigned if figure title contains only non text objects
+* #2501: Unicode subscript numbers are normalized in LaTeX
 
 
 Release 1.4.1 (released Apr 12, 2016)
diff --git a/sphinx/util/texescape.py b/sphinx/util/texescape.py
index 41ab9741c..e8cee0ba1 100644
--- a/sphinx/util/texescape.py
+++ b/sphinx/util/texescape.py
@@ -47,8 +47,26 @@ tex_replacements = [
     ('│', r'\textbar{}'),
     ('ℯ', r'e'),
     ('ⅈ', r'i'),
-    ('₁', r'1'),
-    ('₂', r'2'),
+    ('⁰', r'$^0$'),
+    ('¹', r'$^1$'),
+    ('²', r'$^2$'),
+    ('³', r'$^3$'),
+    ('⁴', r'$^4$'),
+    ('⁵', r'$^5$'),
+    ('⁶', r'$^6$'),
+    ('⁷', r'$^7$'),
+    ('⁸', r'$^8$'),
+    ('⁹', r'$^9$'),
+    ('₀', r'$_0$'),
+    ('₁', r'$_1$'),
+    ('₂', r'$_2$'),
+    ('₃', r'$_3$'),
+    ('₄', r'$_4$'),
+    ('₅', r'$_5$'),
+    ('₆', r'$_6$'),
+    ('₇', r'$_7$'),
+    ('₈', r'$_8$'),
+    ('₉', r'$_9$'),
     # map Greek alphabet
     ('α', r'\(\alpha\)'),
     ('β', r'\(\beta\)'),