Re-added the --ascii option.

Now it is implemented in pandoc.hs, not in the HTML writer.

README

@@ -333,6 +333,11 @@ Options affecting specific writers
 :   Produce HTML5 instead of HTML4.  This option has no effect for writers
     other than `html`. (*Deprecated:*  Use the `html5` output format instead.)
 
+`--ascii`
+:   Use only ascii characters in output.  Currently supported only
+    for HTML output (which uses numerical entities instead of
+    UTF-8 when this option is selected).
+
 `--reference-links`
 :   Use reference-style links, rather than inline links, in writing markdown
     or reStructuredText.  By default inline links are used.

changelog

@@ -178,9 +178,6 @@ pandoc (1.9)
   * `'` is no longer escaped in HTML output.  It does not need to be
     escaped outside of attributes.
 
-  * The `--ascii` option has been removed, because of differences
-      in blaze-html's and xhtml's escaping.
-
   * Pandoc will no longer transform leading newlines in code
     blocks to `<br/>` tags.
 

src/pandoc.hs

@@ -134,6 +134,7 @@ data Opt = Opt
     , optLaTeXEngine       :: String     -- ^ Program to use for latex -> pdf
     , optSlideLevel        :: Maybe Int  -- ^ Header level that creates slides
     , optSetextHeaders     :: Bool       -- ^ Use atx headers for markdown level 1-2
+    , optAscii             :: Bool       -- ^ Use ascii characters only in html
     }
 
 -- | Defaults for command-line options.
@@ -185,6 +186,7 @@ defaultOpts = Opt
     , optLaTeXEngine       = "pdflatex"
     , optSlideLevel        = Nothing
     , optSetextHeaders     = True
+    , optAscii             = False
     }
 
 -- | A list of functions, each transforming the options data structure
@@ -412,6 +414,11 @@ options =
                      return opt { optHtml5 = True }))
                  "" -- "Produce HTML5 in HTML output"
 
+    , Option "" ["ascii"]
+                 (NoArg
+                  (\opt -> return opt { optAscii = True }))
+                 ""  -- "Use ascii characters only in HTML output"
+
     , Option "" ["reference-links"]
                  (NoArg
                   (\opt -> return opt { optReferenceLinks = True } ))
@@ -796,6 +803,7 @@ main = do
               , optLaTeXEngine       = latexEngine
               , optSlideLevel        = slideLevel
               , optSetextHeaders     = setextHeaders
+              , optAscii             = ascii
              } = opts
 
   when dumpArgs $
@@ -1027,10 +1035,15 @@ main = do
               case res of
                    Right pdf -> writeBinary pdf
                    Left err' -> err 43 $ toString err'
-        Just r  -> writerFn outputFile =<< postProcess result
+        Just r
+          | htmlFormat && ascii ->
+                  writerFn outputFile =<< selfcontain (toEntities result)
+          | otherwise ->
+                  writerFn outputFile =<< selfcontain result
           where result       = r writerOptions doc2 ++ ['\n' | not standalone']
-                htmlFormats = ["html","html+lhs","html5","html5+lhs",
+                htmlFormat = writerName' `elem`
+                               ["html","html+lhs","html5","html5+lhs",
                                "s5","slidy","dzslides"]
-                postProcess = if selfContained && writerName' `elem` htmlFormats
-                                then makeSelfContained datadir
-                                else return
+                selfcontain = if selfContained && htmlFormat
+                                 then makeSelfContained datadir
+                                 else return