Fix Unicode super- and subscript digits in LaTeX parsed-literal

sphinx/util/texescape.py

@@ -48,26 +48,26 @@ tex_replacements = [
     ('│', r'\textbar{}'),
     ('ℯ', r'e'),
     ('ⅈ', r'i'),
-    ('⁰', r'$^\text{0}$'),
-    ('¹', r'$^\text{1}$'),
-    ('²', r'$^\text{2}$'),
-    ('³', r'$^\text{3}$'),
-    ('⁴', r'$^\text{4}$'),
-    ('⁵', r'$^\text{5}$'),
-    ('⁶', r'$^\text{6}$'),
-    ('⁷', r'$^\text{7}$'),
-    ('⁸', r'$^\text{8}$'),
-    ('⁹', r'$^\text{9}$'),
-    ('₀', r'$_\text{0}$'),
-    ('₁', r'$_\text{1}$'),
-    ('₂', r'$_\text{2}$'),
-    ('₃', r'$_\text{3}$'),
-    ('₄', r'$_\text{4}$'),
-    ('₅', r'$_\text{5}$'),
-    ('₆', r'$_\text{6}$'),
-    ('₇', r'$_\text{7}$'),
-    ('₈', r'$_\text{8}$'),
-    ('₉', r'$_\text{9}$'),
+    ('⁰', r'\(\sp{\text{0}}\)'),
+    ('¹', r'\(\sp{\text{1}}\)'),
+    ('²', r'\(\sp{\text{2}}\)'),
+    ('³', r'\(\sp{\text{3}}\)'),
+    ('⁴', r'\(\sp{\text{4}}\)'),
+    ('⁵', r'\(\sp{\text{5}}\)'),
+    ('⁶', r'\(\sp{\text{6}}\)'),
+    ('⁷', r'\(\sp{\text{7}}\)'),
+    ('⁸', r'\(\sp{\text{8}}\)'),
+    ('⁹', r'\(\sp{\text{9}}\)'),
+    ('₀', r'\(\sb{\text{0}}\)'),
+    ('₁', r'\(\sb{\text{1}}\)'),
+    ('₂', r'\(\sb{\text{2}}\)'),
+    ('₃', r'\(\sb{\text{3}}\)'),
+    ('₄', r'\(\sb{\text{4}}\)'),
+    ('₅', r'\(\sb{\text{5}}\)'),
+    ('₆', r'\(\sb{\text{6}}\)'),
+    ('₇', r'\(\sb{\text{7}}\)'),
+    ('₈', r'\(\sb{\text{8}}\)'),
+    ('₉', r'\(\sb{\text{9}}\)'),
     # map Greek alphabet
     ('α', r'\(\alpha\)'),
     ('β', r'\(\beta\)'),