Make raw_tex extension non-default for textile reader, writer.

Enable `raw_tex` extension in textile writer.

Closes #1532.

changelog

@@ -89,6 +89,11 @@ pandoc (1.13)
       `\cite{Coffee}`), can be used without any further escaping (Albert
       Krewinkel).
 
+  * Textile reader and writer:
+
+    + The `raw_tex` extension is no longer set by default.  You can
+      enable it with `textile+raw_tex`.
+
   * DocBook reader:
 
     + Support `equation`, `informalequation`, `inlineequation` elements with

src/Text/Pandoc.hs

@@ -304,8 +304,7 @@ getDefaultExtensions "markdown_github" = githubMarkdownExtensions
 getDefaultExtensions "markdown"        = pandocExtensions
 getDefaultExtensions "plain"           = pandocExtensions
 getDefaultExtensions "org"             = Set.fromList [Ext_citations]
-getDefaultExtensions "textile"         = Set.fromList [Ext_auto_identifiers,
-                                                       Ext_raw_tex]
+getDefaultExtensions "textile"         = Set.fromList [Ext_auto_identifiers]
 getDefaultExtensions "html"            = Set.fromList [Ext_auto_identifiers,
                                                        Ext_native_divs,
                                                        Ext_native_spans]

src/Text/Pandoc/Writers/Textile.hs

@@ -404,8 +404,10 @@ inlineToTextile _ (Str str) = return $ escapeStringForTextile str
 inlineToTextile _ (Math _ str) =
   return $ "<span class=\"math\">" ++ escapeStringForXML str ++ "</math>"
 
-inlineToTextile _ (RawInline f str)
+inlineToTextile opts (RawInline f str)
   | f == Format "html" || f == Format "textile" = return str
+  | (f == Format "latex" || f == Format "tex") &&
+     isEnabled Ext_raw_tex opts                 = return str
   | otherwise                                   = return ""
 
 inlineToTextile _ (LineBreak) = return "\n"

tests/textile-reader.native

@@ -155,10 +155,6 @@ Pandoc (Meta {unMeta = fromList []})
  [[Plain [Str "this",Space,RawInline (Format "html") "<div>",Space,Str "won\8217t",Space,Str "produce",Space,Str "raw",Space,Str "html",Space,Str "blocks",Space,RawInline (Format "html") "</div>"]]
  ,[Plain [Str "but",Space,Str "this",Space,RawInline (Format "html") "<strong>",Space,Str "will",Space,Str "produce",Space,Str "inline",Space,Str "html",Space,RawInline (Format "html") "</strong>"]]]
 ,Para [Str "Can",Space,Str "you",Space,Str "prove",Space,Str "that",Space,Str "2",Space,Str "<",Space,Str "3",Space,Str "?"]
-,Header 1 ("raw-latex",[],[]) [Str "Raw",Space,Str "LaTeX"]
-,Para [Str "This",Space,Str "Textile",Space,Str "reader",Space,Str "also",Space,Str "accepts",Space,Str "raw",Space,Str "LaTeX",Space,Str "for",Space,Str "blocks",Space,Str ":"]
-,RawBlock (Format "latex") "\\begin{itemize}\n  \\item one\n  \\item two\n\\end{itemize}"
-,Para [Str "and",Space,Str "for",Space,RawInline (Format "latex") "\\emph{inlines}",Str "."]
 ,Header 1 ("acronyms-and-marks",[],[]) [Str "Acronyms",Space,Str "and",Space,Str "marks"]
 ,Para [Str "PBS (Public Broadcasting System)"]
 ,Para [Str "Hi\8482"]

tests/textile-reader.textile

@@ -235,17 +235,6 @@ Html blocks can be <div>inlined</div> as well.
 
 Can you prove that 2 < 3 ?
 
-h1. Raw LaTeX
-
-This Textile reader also accepts raw LaTeX for blocks :
-
-\begin{itemize}
-  \item one
-  \item two
-\end{itemize}
-
-and for \emph{inlines}.
-
 h1. Acronyms and marks
 
 PBS(Public Broadcasting System)