diff --git a/LICENSE b/LICENSE
new file mode 100644
--- /dev/null
+++ b/LICENSE
@@ -0,0 +1,339 @@
+             GNU GENERAL PUBLIC LICENSE
+                Version 2, June 1991
+
+ Copyright (C) 1989, 1991 Free Software Foundation, Inc.,
+ 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
+ Everyone is permitted to copy and distribute verbatim copies
+ of this license document, but changing it is not allowed.
+
+                     Preamble
+
+  The licenses for most software are designed to take away your
+freedom to share and change it.  By contrast, the GNU General Public
+License is intended to guarantee your freedom to share and change free
+software--to make sure the software is free for all its users.  This
+General Public License applies to most of the Free Software
+Foundation's software and to any other program whose authors commit to
+using it.  (Some other Free Software Foundation software is covered by
+the GNU Lesser General Public License instead.)  You can apply it to
+your programs, too.
+
+  When we speak of free software, we are referring to freedom, not
+price.  Our General Public Licenses are designed to make sure that you
+have the freedom to distribute copies of free software (and charge for
+this service if you wish), that you receive source code or can get it
+if you want it, that you can change the software or use pieces of it
+in new free programs; and that you know you can do these things.
+
+  To protect your rights, we need to make restrictions that forbid
+anyone to deny you these rights or to ask you to surrender the rights.
+These restrictions translate to certain responsibilities for you if you
+distribute copies of the software, or if you modify it.
+
+  For example, if you distribute copies of such a program, whether
+gratis or for a fee, you must give the recipients all the rights that
+you have.  You must make sure that they, too, receive or can get the
+source code.  And you must show them these terms so they know their
+rights.
+
+  We protect your rights with two steps: (1) copyright the software, and
+(2) offer you this license which gives you legal permission to copy,
+distribute and/or modify the software.
+
+  Also, for each author's protection and ours, we want to make certain
+that everyone understands that there is no warranty for this free
+software.  If the software is modified by someone else and passed on, we
+want its recipients to know that what they have is not the original, so
+that any problems introduced by others will not reflect on the original
+authors' reputations.
+
+  Finally, any free program is threatened constantly by software
+patents.  We wish to avoid the danger that redistributors of a free
+program will individually obtain patent licenses, in effect making the
+program proprietary.  To prevent this, we have made it clear that any
+patent must be licensed for everyone's free use or not licensed at all.
+
+  The precise terms and conditions for copying, distribution and
+modification follow.
+
+             GNU GENERAL PUBLIC LICENSE
+   TERMS AND CONDITIONS FOR COPYING, DISTRIBUTION AND MODIFICATION
+
+  0. This License applies to any program or other work which contains
+a notice placed by the copyright holder saying it may be distributed
+under the terms of this General Public License.  The "Program", below,
+refers to any such program or work, and a "work based on the Program"
+means either the Program or any derivative work under copyright law:
+that is to say, a work containing the Program or a portion of it,
+either verbatim or with modifications and/or translated into another
+language.  (Hereinafter, translation is included without limitation in
+the term "modification".)  Each licensee is addressed as "you".
+
+Activities other than copying, distribution and modification are not
+covered by this License; they are outside its scope.  The act of
+running the Program is not restricted, and the output from the Program
+is covered only if its contents constitute a work based on the
+Program (independent of having been made by running the Program).
+Whether that is true depends on what the Program does.
+
+  1. You may copy and distribute verbatim copies of the Program's
+source code as you receive it, in any medium, provided that you
+conspicuously and appropriately publish on each copy an appropriate
+copyright notice and disclaimer of warranty; keep intact all the
+notices that refer to this License and to the absence of any warranty;
+and give any other recipients of the Program a copy of this License
+along with the Program.
+
+You may charge a fee for the physical act of transferring a copy, and
+you may at your option offer warranty protection in exchange for a fee.
+
+  2. You may modify your copy or copies of the Program or any portion
+of it, thus forming a work based on the Program, and copy and
+distribute such modifications or work under the terms of Section 1
+above, provided that you also meet all of these conditions:
+
+    a) You must cause the modified files to carry prominent notices
+    stating that you changed the files and the date of any change.
+
+    b) You must cause any work that you distribute or publish, that in
+    whole or in part contains or is derived from the Program or any
+    part thereof, to be licensed as a whole at no charge to all third
+    parties under the terms of this License.
+
+    c) If the modified program normally reads commands interactively
+    when run, you must cause it, when started running for such
+    interactive use in the most ordinary way, to print or display an
+    announcement including an appropriate copyright notice and a
+    notice that there is no warranty (or else, saying that you provide
+    a warranty) and that users may redistribute the program under
+    these conditions, and telling the user how to view a copy of this
+    License.  (Exception: if the Program itself is interactive but
+    does not normally print such an announcement, your work based on
+    the Program is not required to print an announcement.)
+
+These requirements apply to the modified work as a whole.  If
+identifiable sections of that work are not derived from the Program,
+and can be reasonably considered independent and separate works in
+themselves, then this License, and its terms, do not apply to those
+sections when you distribute them as separate works.  But when you
+distribute the same sections as part of a whole which is a work based
+on the Program, the distribution of the whole must be on the terms of
+this License, whose permissions for other licensees extend to the
+entire whole, and thus to each and every part regardless of who wrote it.
+
+Thus, it is not the intent of this section to claim rights or contest
+your rights to work written entirely by you; rather, the intent is to
+exercise the right to control the distribution of derivative or
+collective works based on the Program.
+
+In addition, mere aggregation of another work not based on the Program
+with the Program (or with a work based on the Program) on a volume of
+a storage or distribution medium does not bring the other work under
+the scope of this License.
+
+  3. You may copy and distribute the Program (or a work based on it,
+under Section 2) in object code or executable form under the terms of
+Sections 1 and 2 above provided that you also do one of the following:
+
+    a) Accompany it with the complete corresponding machine-readable
+    source code, which must be distributed under the terms of Sections
+    1 and 2 above on a medium customarily used for software interchange; or,
+
+    b) Accompany it with a written offer, valid for at least three
+    years, to give any third party, for a charge no more than your
+    cost of physically performing source distribution, a complete
+    machine-readable copy of the corresponding source code, to be
+    distributed under the terms of Sections 1 and 2 above on a medium
+    customarily used for software interchange; or,
+
+    c) Accompany it with the information you received as to the offer
+    to distribute corresponding source code.  (This alternative is
+    allowed only for noncommercial distribution and only if you
+    received the program in object code or executable form with such
+    an offer, in accord with Subsection b above.)
+
+The source code for a work means the preferred form of the work for
+making modifications to it.  For an executable work, complete source
+code means all the source code for all modules it contains, plus any
+associated interface definition files, plus the scripts used to
+control compilation and installation of the executable.  However, as a
+special exception, the source code distributed need not include
+anything that is normally distributed (in either source or binary
+form) with the major components (compiler, kernel, and so on) of the
+operating system on which the executable runs, unless that component
+itself accompanies the executable.
+
+If distribution of executable or object code is made by offering
+access to copy from a designated place, then offering equivalent
+access to copy the source code from the same place counts as
+distribution of the source code, even though third parties are not
+compelled to copy the source along with the object code.
+
+  4. You may not copy, modify, sublicense, or distribute the Program
+except as expressly provided under this License.  Any attempt
+otherwise to copy, modify, sublicense or distribute the Program is
+void, and will automatically terminate your rights under this License.
+However, parties who have received copies, or rights, from you under
+this License will not have their licenses terminated so long as such
+parties remain in full compliance.
+
+  5. You are not required to accept this License, since you have not
+signed it.  However, nothing else grants you permission to modify or
+distribute the Program or its derivative works.  These actions are
+prohibited by law if you do not accept this License.  Therefore, by
+modifying or distributing the Program (or any work based on the
+Program), you indicate your acceptance of this License to do so, and
+all its terms and conditions for copying, distributing or modifying
+the Program or works based on it.
+
+  6. Each time you redistribute the Program (or any work based on the
+Program), the recipient automatically receives a license from the
+original licensor to copy, distribute or modify the Program subject to
+these terms and conditions.  You may not impose any further
+restrictions on the recipients' exercise of the rights granted herein.
+You are not responsible for enforcing compliance by third parties to
+this License.
+
+  7. If, as a consequence of a court judgment or allegation of patent
+infringement or for any other reason (not limited to patent issues),
+conditions are imposed on you (whether by court order, agreement or
+otherwise) that contradict the conditions of this License, they do not
+excuse you from the conditions of this License.  If you cannot
+distribute so as to satisfy simultaneously your obligations under this
+License and any other pertinent obligations, then as a consequence you
+may not distribute the Program at all.  For example, if a patent
+license would not permit royalty-free redistribution of the Program by
+all those who receive copies directly or indirectly through you, then
+the only way you could satisfy both it and this License would be to
+refrain entirely from distribution of the Program.
+
+If any portion of this section is held invalid or unenforceable under
+any particular circumstance, the balance of the section is intended to
+apply and the section as a whole is intended to apply in other
+circumstances.
+
+It is not the purpose of this section to induce you to infringe any
+patents or other property right claims or to contest validity of any
+such claims; this section has the sole purpose of protecting the
+integrity of the free software distribution system, which is
+implemented by public license practices.  Many people have made
+generous contributions to the wide range of software distributed
+through that system in reliance on consistent application of that
+system; it is up to the author/donor to decide if he or she is willing
+to distribute software through any other system and a licensee cannot
+impose that choice.
+
+This section is intended to make thoroughly clear what is believed to
+be a consequence of the rest of this License.
+
+  8. If the distribution and/or use of the Program is restricted in
+certain countries either by patents or by copyrighted interfaces, the
+original copyright holder who places the Program under this License
+may add an explicit geographical distribution limitation excluding
+those countries, so that distribution is permitted only in or among
+countries not thus excluded.  In such case, this License incorporates
+the limitation as if written in the body of this License.
+
+  9. The Free Software Foundation may publish revised and/or new versions
+of the General Public License from time to time.  Such new versions will
+be similar in spirit to the present version, but may differ in detail to
+address new problems or concerns.
+
+Each version is given a distinguishing version number.  If the Program
+specifies a version number of this License which applies to it and "any
+later version", you have the option of following the terms and conditions
+either of that version or of any later version published by the Free
+Software Foundation.  If the Program does not specify a version number of
+this License, you may choose any version ever published by the Free Software
+Foundation.
+
+  10. If you wish to incorporate parts of the Program into other free
+programs whose distribution conditions are different, write to the author
+to ask for permission.  For software which is copyrighted by the Free
+Software Foundation, write to the Free Software Foundation; we sometimes
+make exceptions for this.  Our decision will be guided by the two goals
+of preserving the free status of all derivatives of our free software and
+of promoting the sharing and reuse of software generally.
+
+                     NO WARRANTY
+
+  11. BECAUSE THE PROGRAM IS LICENSED FREE OF CHARGE, THERE IS NO WARRANTY
+FOR THE PROGRAM, TO THE EXTENT PERMITTED BY APPLICABLE LAW.  EXCEPT WHEN
+OTHERWISE STATED IN WRITING THE COPYRIGHT HOLDERS AND/OR OTHER PARTIES
+PROVIDE THE PROGRAM "AS IS" WITHOUT WARRANTY OF ANY KIND, EITHER EXPRESSED
+OR IMPLIED, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
+MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.  THE ENTIRE RISK AS
+TO THE QUALITY AND PERFORMANCE OF THE PROGRAM IS WITH YOU.  SHOULD THE
+PROGRAM PROVE DEFECTIVE, YOU ASSUME THE COST OF ALL NECESSARY SERVICING,
+REPAIR OR CORRECTION.
+
+  12. IN NO EVENT UNLESS REQUIRED BY APPLICABLE LAW OR AGREED TO IN WRITING
+WILL ANY COPYRIGHT HOLDER, OR ANY OTHER PARTY WHO MAY MODIFY AND/OR
+REDISTRIBUTE THE PROGRAM AS PERMITTED ABOVE, BE LIABLE TO YOU FOR DAMAGES,
+INCLUDING ANY GENERAL, SPECIAL, INCIDENTAL OR CONSEQUENTIAL DAMAGES ARISING
+OUT OF THE USE OR INABILITY TO USE THE PROGRAM (INCLUDING BUT NOT LIMITED
+TO LOSS OF DATA OR DATA BEING RENDERED INACCURATE OR LOSSES SUSTAINED BY
+YOU OR THIRD PARTIES OR A FAILURE OF THE PROGRAM TO OPERATE WITH ANY OTHER
+PROGRAMS), EVEN IF SUCH HOLDER OR OTHER PARTY HAS BEEN ADVISED OF THE
+POSSIBILITY OF SUCH DAMAGES.
+
+              END OF TERMS AND CONDITIONS
+
+     How to Apply These Terms to Your New Programs
+
+  If you develop a new program, and you want it to be of the greatest
+possible use to the public, the best way to achieve this is to make it
+free software which everyone can redistribute and change under these terms.
+
+  To do so, attach the following notices to the program.  It is safest
+to attach them to the start of each source file to most effectively
+convey the exclusion of warranty; and each file should have at least
+the "copyright" line and a pointer to where the full notice is found.
+
+    <one line to give the program's name and a brief idea of what it does.>
+    Copyright (C) <year>  <name of author>
+
+    This program is free software; you can redistribute it and/or modify
+    it under the terms of the GNU General Public License as published by
+    the Free Software Foundation; either version 2 of the License, or
+    (at your option) any later version.
+
+    This program is distributed in the hope that it will be useful,
+    but WITHOUT ANY WARRANTY; without even the implied warranty of
+    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+    GNU General Public License for more details.
+
+    You should have received a copy of the GNU General Public License along
+    with this program; if not, write to the Free Software Foundation, Inc.,
+    51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
+
+Also add information on how to contact you by electronic and paper mail.
+
+If the program is interactive, make it output a short notice like this
+when it starts in an interactive mode:
+
+    Gnomovision version 69, Copyright (C) year name of author
+    Gnomovision comes with ABSOLUTELY NO WARRANTY; for details type `show w'.
+    This is free software, and you are welcome to redistribute it
+    under certain conditions; type `show c' for details.
+
+The hypothetical commands `show w' and `show c' should show the appropriate
+parts of the General Public License.  Of course, the commands you use may
+be called something other than `show w' and `show c'; they could even be
+mouse-clicks or menu items--whatever suits your program.
+
+You should also get your employer (if you work as a programmer) or your
+school, if any, to sign a "copyright disclaimer" for the program, if
+necessary.  Here is a sample; alter the names:
+
+  Yoyodyne, Inc., hereby disclaims all copyright interest in the program
+  `Gnomovision' (which makes passes at compilers) written by James Hacker.
+
+  <signature of Ty Coon>, 1 April 1989
+  Ty Coon, President of Vice
+
+This General Public License does not permit incorporating your program into
+proprietary programs.  If your program is a subroutine library, you may
+consider it more useful to permit linking proprietary applications with the
+library.  If this is what you want to do, use the GNU Lesser General
+Public License instead of this License.
diff --git a/PandocCompat.hs b/PandocCompat.hs
new file mode 100644
--- /dev/null
+++ b/PandocCompat.hs
@@ -0,0 +1,13 @@
+{-# LANGUAGE CPP #-}
+module PandocCompat (readLaTeX, readLaTeX') where
+import qualified Text.Pandoc as P
+
+#if MIN_VERSION_pandoc(1,15,0)
+readLaTeX = P.readLaTeX
+readLaTeX' opt src = case P.readLaTeX opt src of
+  Right pan -> pan
+  Left err  -> error $ show err
+#else
+readLaTeX opts = Right . P.readLaTeX opts
+readLaTeX' = P.readLaTeX
+#endif
diff --git a/Setup.hs b/Setup.hs
new file mode 100644
--- /dev/null
+++ b/Setup.hs
@@ -0,0 +1,2 @@
+import Distribution.Simple
+main = defaultMain
diff --git a/env-to-div-filter.hs b/env-to-div-filter.hs
new file mode 100644
--- /dev/null
+++ b/env-to-div-filter.hs
@@ -0,0 +1,28 @@
+{-# LANGUAGE OverloadedStrings, PatternGuards, ViewPatterns #-}
+module Main where
+
+import PandocCompat (readLaTeX)
+
+import           Data.Default           (def)
+import qualified Data.Text              as T
+import           Text.LaTeX             (render)
+import           Text.LaTeX.Base.Parser (parseLaTeX)
+import           Text.LaTeX.Base.Syntax (LaTeX (..))
+import           Text.LaTeX.Utils       (stripTeX)
+import           Text.Pandoc            (bottomUp)
+import           Text.Pandoc.Definition (Block (..), Pandoc (..))
+import           Text.Pandoc.JSON       (toJSONFilter)
+import           Text.Pandoc.Options    (ReaderOptions (..))
+
+main :: IO ()
+main = toJSONFilter envToDiv
+
+envToDiv :: Block -> Block
+envToDiv (RawBlock "latex" src)
+  | Right lat <- parseLaTeX (T.pack src)
+  , TeXEnv name args body <- stripTeX lat =
+  let Right (Pandoc _ bs) = readLaTeX def { readerParseRaw = True } $
+                            T.unpack $ render body
+  in Div ([], [name], [("data-tex-args", T.unpack $ T.concat $ map render args)]) $
+     map (bottomUp envToDiv) bs
+envToDiv b = b
diff --git a/japanese-filter.hs b/japanese-filter.hs
new file mode 100644
--- /dev/null
+++ b/japanese-filter.hs
@@ -0,0 +1,176 @@
+{-# LANGUAGE OverloadedStrings, PatternGuards, QuasiQuotes, ViewPatterns #-}
+module Main where
+import PandocCompat (readLaTeX, readLaTeX')
+
+import           Control.Arrow          ((>>>))
+import           Data.Default
+import           Data.List              (intercalate)
+import qualified Data.Set               as S
+import qualified Data.Text              as T
+import           Text.LaTeX             (LaTeX, render)
+import           Text.LaTeX.Base.Parser (parseLaTeX)
+import           Text.LaTeX.QQ          (hat')
+import           Text.Pandoc            (writeHtmlString, writeICML)
+import           Text.Pandoc            (writeLaTeX)
+import           Text.Pandoc.Builder    (Inlines, doc, fromList, plain)
+import           Text.Pandoc.Definition (Format, Inline (RawInline, Span))
+import           Text.Pandoc.Definition (Block (..), Inline (..), Pandoc (..))
+import           Text.Pandoc.JSON       (toJSONFilter)
+import           Text.Pandoc.Options    (Extension (..), ReaderOptions (..))
+import           Text.Pandoc.Options    (WriterOptions (..))
+import           Text.Pandoc.Shared     (stringify)
+import           Text.XML.HXT.Core      (addAttrl, catA, hasName, ifA, isElem)
+import           Text.XML.HXT.Core      (none, processBottomUp, processChildren)
+import           Text.XML.HXT.Core      (runLA, sattr, this)
+import           Text.XML.HXT.Core      (writeDocumentToString, xread)
+import qualified Text.XML.HXT.Core      as XML
+
+main :: IO ()
+main = toJSONFilter procJapanese
+
+pandocify :: Inlines -> Pandoc
+pandocify = doc . plain
+
+toHtml :: Inlines -> String
+toHtml = writeHtmlString myWriterOpts . pandocify
+
+toLaTeX :: Inlines -> String
+toLaTeX = writeLaTeX myWriterOpts . pandocify
+
+toICML :: Inlines -> String
+toICML = writeICML myWriterOpts . pandocify
+
+myWriterExts :: S.Set Extension
+myWriterExts = S.union (S.fromList [Ext_ignore_line_breaks
+                              ,Ext_raw_html
+                              , Ext_raw_tex]) $ writerExtensions def
+
+myWriterOpts :: WriterOptions
+myWriterOpts = def { writerExtensions  = myWriterExts  }
+
+data TenMode = Sesame | Dot
+             deriving (Read, Show, Eq, Ord)
+
+data JapaneseMarkup = Ruby [(String, String)] [([Inline], [Inline])]
+                    | Kenten TenMode [Inline]
+                    | TatechuYoko [Inline]
+                    deriving (Read, Show, Eq, Ord)
+
+htmlLike :: Format -> Bool
+htmlLike = (`elem` ["epub", "epub3", "html", "html5"])
+
+renderJapanese :: Maybe Format -> JapaneseMarkup -> Inline
+renderJapanese (Just fmt) i | htmlLike fmt
+  = case i of
+      Ruby _opts rtbs ->
+        RawInline "html" $ concat $ "<ruby>" : map (\(rt, bs) ->
+                                                     concat [ toHtml $ fromList bs
+                                                            , "<rt>", toHtml $ fromList rt, "</rt>"
+                                                            ]) rtbs
+                                    ++["</ruby>"]
+      Kenten Sesame inl ->
+        Span ([], ["goma"], []) inl
+      Kenten Dot inl ->
+        Span ([], ["bou"], []) inl
+      TatechuYoko inl ->
+        Span ("", ["tcy"], []) inl
+renderJapanese (Just "latex") i
+  = case i of
+      Ruby _opts rtbs ->
+        let mode | length rtbs <= 1 = "g"
+                 | otherwise = "m"
+        in  RawInline "latex" $ concat [ "\\ruby[", mode, "]{", concatMap (toLaTeX . fromList . fst) rtbs, "}{",
+                                         intercalate "|" $ map (toLaTeX . fromList . snd) rtbs, "}"]
+      Kenten _ il ->
+        RawInline "latex" $ concat ["\\bou{", toLaTeX $ fromList il, "}"]
+      TatechuYoko il ->
+        RawInline "latex" $ concat ["\\rensuji{", toLaTeX $ fromList il, "}"]
+renderJapanese (Just "icml") mark
+  = case mark of
+    Ruby _opts rtbs ->
+      let kind | length rtbs == 1 = "GroupRuby"
+               | otherwise = "PerCharacterRuby"
+      in encloseICML [("RubyFlag", "1")
+                     ,("RubyString", intercalate " " $ map (stringify.snd) rtbs)
+                     ,("RubyType", kind)]
+                  $ concatMap fst rtbs
+    Kenten Dot il ->
+      encloseICML [("KentenKind", "kentenSmallBlackCircle")] il
+    Kenten Sesame il ->
+      encloseICML [("KentenKind", "KentenSesameDot")] il
+    TatechuYoko il ->
+      encloseICML [("Tatechuyoko", "true")] il
+
+renderJapanese _ _ = error "Japanese format not supported!"
+
+inlify :: Pandoc -> [Inline]
+inlify (Pandoc _ bs0) = concatMap go bs0
+  where
+    go (Plain is) = is
+    go (Para is) = is
+    go (RawBlock _ _) = []
+    go (CodeBlock _ _) = []
+    go (BlockQuote bs) = concatMap go bs
+    go (BulletList bs) = concatMap (concatMap go) bs
+    go (OrderedList _ bs) = concatMap (concatMap go) bs
+    go (DefinitionList bs) = concatMap (\(is, b) -> is ++ concatMap (concatMap go) b) bs
+    go (Header _ _ b) = b
+    go HorizontalRule = []
+    go (Table _ _ _ _ _) = []
+    go (Div _ bs) = concatMap go bs
+    go Null = []
+
+latToInl :: LaTeX -> [Inline]
+latToInl = inlify . readLaTeX' myReaderOpts . T.unpack . render
+
+procJapanese :: Maybe Format -> Inline -> Inline
+procJapanese mfmt (Span (_, ["ruby"], atts) [rt, base])
+  = renderJapanese mfmt $ Ruby atts [([rt], [base])]
+procJapanese mfmt (RawInline "latex" src)
+  | Right [hat'|\ruby[\hask{mode}]{\hask{base}}{\hask{rt}}|] <- parseLaTeX (T.pack src)
+  = let modestr = T.unpack (render  mode)
+        isGroup = 'g' `elem` modestr
+        isMono  = 'm' `elem` modestr
+        isJuku  = 'j' `elem` modestr
+        args | isGroup = [(latToInl rt, latToInl base)]
+             | isMono || isJuku =
+                 zip (map (return . Str . T.unpack) $ T.splitOn "|" $ T.pack $ stringify $ latToInl rt)
+                     (map (return . Str . (:[])) $ stringify $ latToInl base)
+             | otherwise = [(latToInl rt, latToInl base)]
+    in renderJapanese mfmt $ Ruby [] args
+  | Right [hat'|\ruby{\hask{base}}{\hask{rt}}|] <- parseLaTeX (T.pack src)
+  = renderJapanese mfmt $ Ruby [] [(latToInl rt, latToInl base)]
+procJapanese mfmt (Span (_, ["sesame"], _) is)
+  = renderJapanese mfmt $ Kenten Sesame is
+procJapanese mfmt (Span (_, ["bullet"], _) is)
+  = renderJapanese mfmt $ Kenten Dot is
+procJapanese mfmt (RawInline "latex" src)
+  | Right [hat'|\bou{\hask{rt}}|] <- parseLaTeX (T.pack src)
+  = let toI = inlify . readLaTeX' myReaderOpts . T.unpack . render
+    in renderJapanese mfmt $ Kenten Sesame $ toI rt
+procJapanese mfmt (Span (_, ["tcy"], _) is)
+  = renderJapanese mfmt $ TatechuYoko is
+procJapanese mfmt (RawInline "latex" src)
+  | Right [hat'|\rensuji{\hask{rt}}|] <- parseLaTeX (T.pack src)
+  = let toI = inlify . readLaTeX' myReaderOpts . T.unpack . render
+    in renderJapanese mfmt $ TatechuYoko $ toI rt
+procJapanese _ i = i
+
+myReaderOpts :: ReaderOptions
+myReaderOpts = def { readerParseRaw = True
+                   , readerApplyMacros = False
+                   }
+
+type Attrs = [(String, String)]
+
+encloseICML :: Attrs -> [Inline] -> Inline
+encloseICML args body =
+  let src = toICML $ fromList body
+  in RawInline "icml" $
+     concat $ runLA (xread >>> hasName "ParagraphStyleRange" >>> enc
+                           >>> processChildren (ifA (hasName "Br") none this)
+                           >>> writeDocumentToString []) src
+  where
+    enc = processBottomUp (trans `XML.when` isCSR)
+    isCSR = isElem >>> hasName "CharacterStyleRange"
+    trans = addAttrl (catA $ map (uncurry sattr) args)
diff --git a/math-to-svg-filter.hs b/math-to-svg-filter.hs
new file mode 100644
--- /dev/null
+++ b/math-to-svg-filter.hs
@@ -0,0 +1,133 @@
+{-# LANGUAGE ExtendedDefaultRules, FlexibleContexts, LambdaCase          #-}
+{-# LANGUAGE MultiParamTypeClasses, NoMonomorphismRestriction            #-}
+{-# LANGUAGE OverloadedStrings, PatternGuards, QuasiQuotes, ViewPatterns #-}
+{-# OPTIONS_GHC -fno-warn-type-defaults #-}
+module Main where
+
+import           Control.Applicative       ((<*))
+import           Control.Applicative       ((<$>))
+import           Control.Effect            (EffectState, evalState, get, modify)
+import           Control.Effect            (runEffect, runWriter, tell)
+import           Control.Monad             (forM_)
+import           Control.Monad             (void)
+import           Control.Monad.Effect      (Effect)
+import qualified Data.Text                 as T
+import           Filesystem.Path.CurrentOS (encodeString)
+import           Shelly                    (cd, cp, findWhen, hasExt, mkdir_p)
+import           Shelly                    (pwd, shelly, withTmpDir, writefile)
+import           Shelly                    ((<.>), (</>))
+import           Shelly                    (cmd)
+import           Shelly                    (silently)
+import           Shelly                    (liftIO)
+import           Text.LaTeX                (document, documentclass)
+import           Text.LaTeX                (execLaTeXM, render, usepackage)
+import           Text.LaTeX                (execLaTeXT)
+import           Text.LaTeX.Base.Class     (fromLaTeX)
+import           Text.LaTeX.Base.Parser    (parseLaTeX)
+import           Text.LaTeX.Base.Syntax    (LaTeX (..))
+import           Text.LaTeX.Base.Syntax    (matchCommand)
+import           Text.LaTeX.Base.Syntax    (TeXArg (..))
+import           Text.LaTeX.QQ             (hat, hat')
+import           Text.LaTeX.Utils          (stripTeX)
+import           Text.Pandoc               (Inline (..), MathType (..))
+import           Text.Pandoc               (Pandoc (..), bottomUpM)
+import           Text.Pandoc               (Block (..))
+import           Text.Pandoc.JSON          (toJSONFilter)
+
+default (T.Text, Double)
+
+main :: IO ()
+main = toJSONFilter processMath
+
+newIdent :: EffectState Integer r => Effect r Integer
+newIdent = get <* modify succ
+
+toSVGName :: Integer -> String
+toSVGName n = encodeString $ "maths" </> ("math-" ++ show n) <.> "svg"
+
+splitDisplayMath :: Block -> [Block]
+splitDisplayMath = undefined
+
+data MathSetting = MathSetting
+                   { mathMode :: MathType
+                   , mathBody :: String
+                   } deriving (Read, Show, Eq, Ord)
+
+
+b2i :: Num a => Bool -> a
+b2i False = 0
+b2i True  = 1
+
+mathToTag :: MathType -> Integer -> String -> Inline
+mathToTag mode n src =
+  let labeled = either (const False) (not . null . matchCommand (`elem` ["tag", "label"])) $
+                parseLaTeX $ T.pack src
+      indented = "&" `T.isInfixOf` T.pack src
+      offset = b2i (labeled || indented) + b2i (mode == DisplayMath)
+      linum = T.count "\\\\" (T.pack src) + 1 + offset
+  in Span ("", [show mode], [])
+     [RawInline "html" $ "<img src=\""++ toSVGName n ++ "\" style=\"height:"++show linum ++"em\" />"]
+
+data Math = Equation LaTeX
+          | FitchProof LaTeX
+          | GentzenProof LaTeX
+          deriving (Show, Eq)
+
+processMath :: Pandoc -> IO Pandoc
+processMath pan = do
+  let (pan', maths) = runEffect $ runWriter $ evalState 1 $ flip bottomUpM pan $ \case
+        RawInline "latex" src
+          | Right [hat'|\pboxy{\hask{lat}}|] <- parseLaTeX $ T.pack src
+          , [hat'|$\hask{math}$|] <- stripTeX lat -> do
+            n <- newIdent
+            tell [(n, MathSetting InlineMath $ T.unpack $ render math)]
+            return $ mathToTag InlineMath n src
+        Math mode math -> do
+            n <- newIdent
+            tell [(n, MathSetting mode math)]
+            return $ mathToTag mode n math
+        i -> return i
+  shelly $ do
+    cwd <- pwd
+    let dist = cwd </> "maths"
+    mkdir_p dist
+    src <- render <$> (execLaTeXT $ do
+          documentclass ["leqno"] "bxjsarticle"
+          usepackage ["active", "xetex", "tightpage"] "preview"
+          usepackage [] "mymacros"
+          usepackage [] "amsmath,amssymb"
+          usepackage ["inline"] "enumitem"
+          usepackage [] "bm"
+          usepackage [] "zxjatype"
+          usepackage ["kozuka4"] "zxjafont"
+          usepackage [] "zxotf"
+          usepackage [] "cases"
+          usepackage [] "fitch"
+          usepackage [] "picins"
+          fromLaTeX [hat|\def\fCenter{\ \vdash\ }|]
+          document $ forM_ maths $ \(_, MathSetting mode cont) -> do
+            liftIO $ print cont
+            let Right lat = parseLaTeX $ T.pack cont
+                labeled = not (null $ matchCommand (`elem` ["tag", "label"]) lat)
+                math | mode == InlineMath = [hat|$\hask{lat}$|]
+                     | TeXEnv "aligned" [] body <- lat =
+                        TeXEnv "minipage" [FixArg [hat|25 \jsZw|]] $ TeXEnv (if labeled then "align" else "align*") [] body
+                     | labeled = TeXEnv "minipage" [FixArg [hat|25 \jsZw|]] $ TeXEnv "align" [] lat
+                     | labeled = TeXEnv "minipage" [FixArg [hat|25 \jsZw|]] $ TeXEnv "align*" [] lat
+                     | otherwise = TeXEnv "minipage" [FixArg [hat|25 \jsZw|]] $ [hat|\[ \hask{lat} \]|]
+            fromLaTeX $ TeXEnv "preview" [] math)
+    let tmp = cwd </> "tmp"
+    mkdir_p tmp
+    withTmpDir $ \_tmp -> do
+      let texfile = tmp </> "math.tex"
+      cd tmp
+      writefile texfile src
+      void $ silently $ cmd "xelatex" "-shell-escape" "-halt-on-error"
+                            "-file-line-error" "-interaction=nonstopmode"
+                            texfile
+      void $ cmd "pdf2svg" (tmp </> "math.pdf") (tmp </> "math-%d.svg") "all"
+      mapM_ (flip cp dist) =<< findWhen (return . hasExt "svg") tmp
+      return ()
+  return pan'
+
+
diff --git a/pandoc-japanese-filters.cabal b/pandoc-japanese-filters.cabal
new file mode 100644
--- /dev/null
+++ b/pandoc-japanese-filters.cabal
@@ -0,0 +1,78 @@
+-- Initial hi-executable.cabal generated by cabal init.  For further 
+-- documentation, see http://haskell.org/cabal/users-guide/
+
+name:                pandoc-japanese-filters
+version:             0.1.0.0
+synopsis:            Japanese-specific markup filters for pandoc.
+description:         Japanese-specific markup filters for pandoc.
+license:             GPL-2
+license-file:        LICENSE
+author:              Hiromi ISHII <konn.jinro_at_gmail.com>
+maintainer:          Hiromi ISHII <konn.jinro_at_gmail.com>
+copyright:           (c) Hiromi ISHII 2015
+category:            Text
+build-type:          Simple
+-- extra-source-files:  
+cabal-version:       >=1.10
+
+source-repository head
+  type: git
+  location: git://github.com/konn/pandoc-japanese-filters.git
+
+executable tate-math-to-svg-filter
+  Main-is:             tate-math-to-svg-filter.hs
+  Other-modules:       PandocCompat
+  build-depends:       base             >= 4 && < 5
+                     , system-filepath
+                     , system-fileio
+                     , pandoc
+                     , pandoc-types
+                     , HaTeX
+                     , HaTeX-qq
+                     , text
+                     , shelly
+                     , effin
+  default-language:    Haskell2010
+
+executable math-to-svg-filter
+  Main-is:             math-to-svg-filter.hs
+  Other-modules:       PandocCompat
+  build-depends:       base             >= 4 && < 5
+                     , system-filepath
+                     , system-fileio
+                     , pandoc
+                     , pandoc-types
+                     , HaTeX
+                     , HaTeX-qq
+                     , text
+                     , shelly
+                     , effin
+  default-language:    Haskell2010
+
+executable japanese-filter
+  Main-is:             japanese-filter.hs
+  Other-modules:       PandocCompat
+  build-depends:       HaTeX
+                     , HaTeX-qq
+                     , base
+                     , containers
+                     , data-default
+                     , pandoc
+                     , pandoc-types
+                     , text
+                     , hxt
+  default-language:    Haskell2010
+
+executable env-to-div-filter
+  Main-is:             env-to-div-filter.hs
+  Other-modules:       PandocCompat
+  build-depends:       HaTeX
+                     , HaTeX-qq
+                     , base
+                     , containers
+                     , data-default
+                     , pandoc
+                     , pandoc-types
+                     , text
+                     , hxt
+  default-language:    Haskell2010
diff --git a/tate-math-to-svg-filter.hs b/tate-math-to-svg-filter.hs
new file mode 100644
--- /dev/null
+++ b/tate-math-to-svg-filter.hs
@@ -0,0 +1,132 @@
+{-# LANGUAGE ExtendedDefaultRules, FlexibleContexts, LambdaCase          #-}
+{-# LANGUAGE MultiParamTypeClasses, NoMonomorphismRestriction            #-}
+{-# LANGUAGE OverloadedStrings, PatternGuards, QuasiQuotes, ViewPatterns #-}
+{-# OPTIONS_GHC -fno-warn-type-defaults #-}
+module Main where
+
+import           Control.Applicative       ((<*))
+import           Control.Effect            (EffectState, evalState, get, modify)
+import           Control.Effect            (runEffect, runWriter, tell)
+import           Control.Monad             (forM_)
+import           Control.Monad             (void)
+import           Control.Monad.Effect      (Effect)
+import qualified Data.Text                 as T
+import           Filesystem.Path.CurrentOS (encodeString)
+import           Shelly                    (cd, cp, findWhen, hasExt, mkdir_p)
+import           Shelly                    (pwd, shelly, withTmpDir, writefile)
+import           Shelly                    ((<.>), (</>))
+import           Shelly                    (cmd)
+import           Shelly                    (silently)
+import           Text.LaTeX                (document, documentclass)
+import           Text.LaTeX                (execLaTeXM, render, usepackage)
+import           Text.LaTeX.Base.Class     (fromLaTeX)
+import           Text.LaTeX.Base.Parser    (parseLaTeX)
+import           Text.LaTeX.Base.Syntax    (LaTeX (..))
+import           Text.LaTeX.Base.Syntax    (matchCommand)
+import           Text.LaTeX.Base.Syntax    (TeXArg (..))
+import           Text.LaTeX.QQ             (hat, hat')
+import           Text.LaTeX.Utils          (stripTeX)
+import           Text.Pandoc               (Inline (..), MathType (..))
+import           Text.Pandoc               (Pandoc (..), bottomUpM)
+import           Text.Pandoc               (Block (..))
+import           Text.Pandoc.JSON          (toJSONFilter)
+
+default (T.Text)
+
+main :: IO ()
+main = toJSONFilter processMath
+
+newIdent :: EffectState Integer r => Effect r Integer
+newIdent = get <* modify succ
+
+toSVGName :: Integer -> String
+toSVGName n = encodeString $ "maths" </> ("math-" ++ show n) <.> "svg"
+
+splitDisplayMath :: Block -> [Block]
+splitDisplayMath = undefined
+
+data MathSetting = MathSetting
+                   { mathMode :: MathType
+                   , mathYoko :: Bool
+                   , mathBody :: String
+                   } deriving (Read, Show, Eq, Ord)
+
+
+b2i :: Num a => Bool -> a
+b2i False = 0
+b2i True  = 1
+
+mathToTag :: MathType -> Integer -> String -> Inline
+mathToTag mode n src =
+  let labeled = either (const False) (not . null . matchCommand (`elem` ["tag", "label"])) $
+                parseLaTeX $ T.pack src
+      indented = "&" `T.isInfixOf` T.pack src
+      offset = b2i (labeled || indented) + b2i (mode == DisplayMath)
+      linum = T.count "\\\\" (T.pack src) + 1 + offset
+  in Span ("", [show mode], [])
+     [RawInline "html" $ "<img src=\""++ toSVGName n ++ "\" style=\"width:"++show linum ++"em\" />"]
+
+data Math = Equation LaTeX
+          | FitchProof LaTeX
+          | GentzenProof LaTeX
+          deriving (Show, Eq)
+
+processMath :: Pandoc -> IO Pandoc
+processMath pan = do
+  let (pan', maths) = runEffect $ runWriter $ evalState 1 $ flip bottomUpM pan $ \case
+        RawInline "latex" src
+          | Right [hat'|\pboxy{\hask{lat}}|] <- parseLaTeX $ T.pack src
+          , [hat'|$\hask{math}$|] <- stripTeX lat -> do
+            n <- newIdent
+            tell [(n, MathSetting InlineMath True $ T.unpack $ render math)]
+            return $ mathToTag InlineMath n src
+        Math mode math -> do
+            n <- newIdent
+            tell [(n, MathSetting mode False math)]
+            return $ mathToTag mode n math
+        i -> return i
+  shelly $ do
+    cwd <- pwd
+    let dist = cwd </> "maths"
+    mkdir_p dist
+    let src = render $ execLaTeXM $ do
+          documentclass ["leqno"] "bxjsarticle"
+          usepackage ["active", "xetex", "tightpage"] "preview"
+          usepackage [] "mymacros"
+          usepackage [] "amsmath,amssymb"
+          usepackage ["inline"] "enumitem"
+          usepackage [] "bm"
+          usepackage [] "zxjatype"
+          usepackage ["kozuka4"] "zxjafont"
+          usepackage [] "zxotf"
+          usepackage [] "cases"
+          usepackage [] "fitch"
+          usepackage [] "picins"
+          fromLaTeX [hat|\def\fCenter{\ \vdash\ }|]
+          document $ forM_ maths $ \(_, MathSetting mode yoko cont) -> do
+            let Right lat = parseLaTeX $ T.pack cont
+                labeled = not (null $ matchCommand (`elem` ["tag", "label"]) lat)
+                math | mode == InlineMath = [hat|$\hask{lat}$|]
+                     | TeXEnv "aligned" [] body <- lat =
+                        TeXEnv "minipage" [FixArg [hat|25 \jsZw|]] $ TeXEnv (if labeled then "align" else "align*") [] body
+                     | labeled = TeXEnv "minipage" [FixArg [hat|25 \jsZw|]] $ TeXEnv "align" [] lat
+                     | labeled = TeXEnv "minipage" [FixArg [hat|25 \jsZw|]] $ TeXEnv "align*" [] lat
+                     | otherwise = TeXEnv "minipage" [FixArg [hat|25 \jsZw|]] $ [hat|\[ \hask{lat} \]|]
+                rot t | yoko = t
+                      | otherwise = TeXComm "rotatebox" [FixArg "-90", FixArg t]
+            fromLaTeX $ TeXEnv "preview" [] $ rot math
+    let tmp = cwd </> "tmp"
+    mkdir_p tmp
+    withTmpDir $ \_tmp -> do
+      let texfile = tmp </> "math.tex"
+      cd tmp
+      writefile texfile src
+      void $ silently $ cmd "xelatex" "-shell-escape" "-halt-on-error"
+                            "-file-line-error" "-interaction=nonstopmode"
+                            texfile
+      void $ cmd "pdf2svg" (tmp </> "math.pdf") (tmp </> "math-%d.svg") "all"
+      mapM_ (flip cp dist) =<< findWhen (return . hasExt "svg") tmp
+      return ()
+  return pan'
+
+
