1 files changed, 85 insertions, 83 deletions

diff --git a/sphinx/util/texescape.py b/sphinx/util/texescape.py
index c0619f46..6fcf9ff0 100644
--- a/sphinx/util/texescape.py
+++ b/sphinx/util/texescape.py
@@ -9,93 +9,95 @@
     :license: BSD, see LICENSE for details.
 """
 
+from __future__ import unicode_literals
+
 tex_replacements = [
     # map TeX special chars
-    (u'$', ur'\$'),
-    (u'%', ur'\%'),
-    (u'&', ur'\&'),
-    (u'#', ur'\#'),
-    (u'_', ur'\_'),
-    (u'{', ur'\{'),
-    (u'}', ur'\}'),
-    (u'[', ur'{[}'),
-    (u']', ur'{]}'),
-    (u'`', ur'{}`'),
-    (u'\\',ur'\textbackslash{}'),
-    (u'~', ur'\textasciitilde{}'),
-    (u'<', ur'\textless{}'),
-    (u'>', ur'\textgreater{}'),
-    (u'^', ur'\textasciicircum{}'),
+    ('$', r'\$'),
+    ('%', r'\%'),
+    ('&', r'\&'),
+    ('#', r'\#'),
+    ('_', r'\_'),
+    ('{', r'\{'),
+    ('}', r'\}'),
+    ('[', r'{[}'),
+    (']', r'{]}'),
+    ('`', r'{}`'),
+    ('\\',r'\textbackslash{}'),
+    ('~', r'\textasciitilde{}'),
+    ('<', r'\textless{}'),
+    ('>', r'\textgreater{}'),
+    ('^', r'\textasciicircum{}'),
     # map special Unicode characters to TeX commands
-    (u'¶', ur'\P{}'),
-    (u'§', ur'\S{}'),
-    (u'€', ur'\texteuro{}'),
-    (u'∞', ur'\(\infty\)'),
-    (u'±', ur'\(\pm\)'),
-    (u'→', ur'\(\rightarrow\)'),
-    (u'‣', ur'\(\rightarrow\)'),
+    ('¶', r'\P{}'),
+    ('§', r'\S{}'),
+    ('€', r'\texteuro{}'),
+    ('∞', r'\(\infty\)'),
+    ('±', r'\(\pm\)'),
+    ('→', r'\(\rightarrow\)'),
+    ('‣', r'\(\rightarrow\)'),
     # used to separate -- in options
-    (u'', ur'{}'),
+    ('', r'{}'),
     # map some special Unicode characters to similar ASCII ones
-    (u'─', ur'-'),
-    (u'⎽', ur'\_'),
-    (u'╲', ur'\textbackslash{}'),
-    (u'|', ur'\textbar{}'),
-    (u'│', ur'\textbar{}'),
-    (u'ℯ', ur'e'),
-    (u'ⅈ', ur'i'),
-    (u'₁', ur'1'),
-    (u'₂', ur'2'),
+    ('─', r'-'),
+    ('⎽', r'\_'),
+    ('╲', r'\textbackslash{}'),
+    ('|', r'\textbar{}'),
+    ('│', r'\textbar{}'),
+    ('ℯ', r'e'),
+    ('ⅈ', r'i'),
+    ('₁', r'1'),
+    ('₂', r'2'),
     # map Greek alphabet
-    (u'α', ur'\(\alpha\)'),
-    (u'β', ur'\(\beta\)'),
-    (u'γ', ur'\(\gamma\)'),
-    (u'δ', ur'\(\delta\)'),
-    (u'ε', ur'\(\epsilon\)'),
-    (u'ζ', ur'\(\zeta\)'),
-    (u'η', ur'\(\eta\)'),
-    (u'θ', ur'\(\theta\)'),
-    (u'ι', ur'\(\iota\)'),
-    (u'κ', ur'\(\kappa\)'),
-    (u'λ', ur'\(\lambda\)'),
-    (u'μ', ur'\(\mu\)'),
-    (u'ν', ur'\(\nu\)'),
-    (u'ξ', ur'\(\xi\)'),
-    (u'ο', ur'o'),
-    (u'π', ur'\(\pi\)'),
-    (u'ρ', ur'\(\rho\)'),
-    (u'σ', ur'\(\sigma\)'),
-    (u'τ', ur'\(\tau\)'),
-    (u'υ', u'\\(\\upsilon\\)'),
-    (u'φ', ur'\(\phi\)'),
-    (u'χ', ur'\(\chi\)'),
-    (u'ψ', ur'\(\psi\)'),
-    (u'ω', ur'\(\omega\)'),
-    (u'Α', ur'A'),
-    (u'Β', ur'B'),
-    (u'Γ', ur'\(\Gamma\)'),
-    (u'Δ', ur'\(\Delta\)'),
-    (u'Ε', ur'E'),
-    (u'Ζ', ur'Z'),
-    (u'Η', ur'H'),
-    (u'Θ', ur'\(\Theta\)'),
-    (u'Ι', ur'I'),
-    (u'Κ', ur'K'),
-    (u'Λ', ur'\(\Lambda\)'),
-    (u'Μ', ur'M'),
-    (u'Ν', ur'N'),
-    (u'Ξ', ur'\(\Xi\)'),
-    (u'Ο', ur'O'),
-    (u'Π', ur'\(\Pi\)'),
-    (u'Ρ', ur'P'),
-    (u'Σ', ur'\(\Sigma\)'),
-    (u'Τ', ur'T'),
-    (u'Υ', u'\\(\\Upsilon\\)'),
-    (u'Φ', ur'\(\Phi\)'),
-    (u'Χ', ur'X'),
-    (u'Ψ', ur'\(\Psi\)'),
-    (u'Ω', ur'\(\Omega\)'),
-    (u'Ω', ur'\(\Omega\)'),
+    ('α', r'\(\alpha\)'),
+    ('β', r'\(\beta\)'),
+    ('γ', r'\(\gamma\)'),
+    ('δ', r'\(\delta\)'),
+    ('ε', r'\(\epsilon\)'),
+    ('ζ', r'\(\zeta\)'),
+    ('η', r'\(\eta\)'),
+    ('θ', r'\(\theta\)'),
+    ('ι', r'\(\iota\)'),
+    ('κ', r'\(\kappa\)'),
+    ('λ', r'\(\lambda\)'),
+    ('μ', r'\(\mu\)'),
+    ('ν', r'\(\nu\)'),
+    ('ξ', r'\(\xi\)'),
+    ('ο', r'o'),
+    ('π', r'\(\pi\)'),
+    ('ρ', r'\(\rho\)'),
+    ('σ', r'\(\sigma\)'),
+    ('τ', r'\(\tau\)'),
+    ('υ', '\\(\\upsilon\\)'),
+    ('φ', r'\(\phi\)'),
+    ('χ', r'\(\chi\)'),
+    ('ψ', r'\(\psi\)'),
+    ('ω', r'\(\omega\)'),
+    ('Α', r'A'),
+    ('Β', r'B'),
+    ('Γ', r'\(\Gamma\)'),
+    ('Δ', r'\(\Delta\)'),
+    ('Ε', r'E'),
+    ('Ζ', r'Z'),
+    ('Η', r'H'),
+    ('Θ', r'\(\Theta\)'),
+    ('Ι', r'I'),
+    ('Κ', r'K'),
+    ('Λ', r'\(\Lambda\)'),
+    ('Μ', r'M'),
+    ('Ν', r'N'),
+    ('Ξ', r'\(\Xi\)'),
+    ('Ο', r'O'),
+    ('Π', r'\(\Pi\)'),
+    ('Ρ', r'P'),
+    ('Σ', r'\(\Sigma\)'),
+    ('Τ', r'T'),
+    ('Υ', '\\(\\Upsilon\\)'),
+    ('Φ', r'\(\Phi\)'),
+    ('Χ', r'X'),
+    ('Ψ', r'\(\Psi\)'),
+    ('Ω', r'\(\Omega\)'),
+    ('Ω', r'\(\Omega\)'),
 ]
 
 tex_escape_map = {}
@@ -105,8 +107,8 @@ tex_hl_escape_map_new = {}
 def init():
     for a, b in tex_replacements:
         tex_escape_map[ord(a)] = b
-        tex_replace_map[ord(a)] = u'_'
+        tex_replace_map[ord(a)] = '_'
 
     for a, b in tex_replacements:
-        if a in u'[]{}\\': continue
+        if a in '[]{}\\': continue
         tex_hl_escape_map_new[ord(a)] = b