Changed Ext_tex_math to Ext_tex_math_dollars.

README

@@ -1752,7 +1752,7 @@ Attributes can be attached to verbatim text, just as with
 Math
 ----
 
-**Extension: `tex_math`**
+**Extension: `tex_math_dollars`**
 
 Anything between two `$` characters will be treated as TeX math.  The
 opening `$` must have a character immediately to its right, while the

src/Text/Pandoc/Options.hs

@@ -57,7 +57,7 @@ data Extension = Ext_footnotes
                | Ext_pipe_tables
                | Ext_citations
                | Ext_raw_tex
-               | Ext_tex_math
+               | Ext_tex_math_dollars
                | Ext_latex_macros
                | Ext_delimited_code_blocks
                | Ext_inline_code_attributes
@@ -93,7 +93,7 @@ pandocExtensions = Set.fromList
   , Ext_pipe_tables
   , Ext_citations
   , Ext_raw_tex
-  , Ext_tex_math
+  , Ext_tex_math_dollars
   , Ext_latex_macros
   , Ext_delimited_code_blocks
   , Ext_inline_code_attributes

src/Text/Pandoc/Readers/Markdown.hs

@@ -1184,13 +1184,13 @@ math =  (return . B.displayMath <$> (mathDisplay >>= applyMacros'))
 
 mathDisplay :: Parser [Char] ParserState String
 mathDisplay = try $ do
-  guardEnabled Ext_tex_math
+  guardEnabled Ext_tex_math_dollars
   string "$$"
   many1Till (noneOf "\n" <|> (newline >>~ notFollowedBy' blankline)) (try $ string "$$")
 
 mathInline :: Parser [Char] ParserState String
 mathInline = try $ do
-  guardEnabled Ext_tex_math
+  guardEnabled Ext_tex_math_dollars
   char '$'
   notFollowedBy space
   words' <- sepBy1 mathWord (many1 (spaceChar <|> (newline >>~ notFollowedBy' blankline)))