Use babel, not polyglossia, with xelatex.babel

Previously polyglossia worked better with xelatex, but
that is no longer the case, so we simplify the code so that
babel is used with all latex engines.

This involves a change to the default LaTeX template.

2 files changed, 6 insertions, 57 deletions

diff --git a/src/Text/Pandoc/Writers/LaTeX/Lang.hs b/src/Text/Pandoc/Writers/LaTeX/Lang.hs
index 0ba68b74e..f6fa8d187 100644
--- a/src/Text/Pandoc/Writers/LaTeX/Lang.hs
+++ b/src/Text/Pandoc/Writers/LaTeX/Lang.hs
@@ -10,61 +10,12 @@
    Portability : portable
 -}
 module Text.Pandoc.Writers.LaTeX.Lang
-  ( toPolyglossiaEnv,
-    toPolyglossia,
-    toBabel
+  ( toBabel
   ) where
 import Data.Text (Text)
 import Text.Collate.Lang (Lang(..))
 
 
--- In environments \Arabic instead of \arabic is used
-toPolyglossiaEnv :: Lang -> (Text, Text)
-toPolyglossiaEnv l =
-  case toPolyglossia l of
-    ("arabic", o) -> ("Arabic", o)
-    x             -> x
-
--- Takes a list of the constituents of a BCP47 language code and
--- converts it to a Polyglossia (language, options) tuple
--- http://mirrors.ctan.org/macros/latex/contrib/polyglossia/polyglossia.pdf
-toPolyglossia :: Lang -> (Text, Text)
-toPolyglossia (Lang "ar" _ (Just "DZ") _ _ _)  = ("arabic", "locale=algeria")
-toPolyglossia (Lang "ar" _ (Just "IQ") _ _ _)  = ("arabic", "locale=mashriq")
-toPolyglossia (Lang "ar" _ (Just "JO") _ _ _)  = ("arabic", "locale=mashriq")
-toPolyglossia (Lang "ar" _ (Just "LB") _ _ _)  = ("arabic", "locale=mashriq")
-toPolyglossia (Lang "ar" _ (Just "LY") _ _ _)  = ("arabic", "locale=libya")
-toPolyglossia (Lang "ar" _ (Just "MA") _ _ _)  = ("arabic", "locale=morocco")
-toPolyglossia (Lang "ar" _ (Just "MR") _ _ _)  = ("arabic", "locale=mauritania")
-toPolyglossia (Lang "ar" _ (Just "PS") _ _ _)  = ("arabic", "locale=mashriq")
-toPolyglossia (Lang "ar" _ (Just "SY") _ _ _)  = ("arabic", "locale=mashriq")
-toPolyglossia (Lang "ar" _ (Just "TN") _ _ _)  = ("arabic", "locale=tunisia")
-toPolyglossia (Lang "de" _ _ vars _ _)
-  | "1901" `elem` vars                         = ("german", "spelling=old")
-toPolyglossia (Lang "de" _ (Just "AT") vars _ _)
-  | "1901" `elem` vars         = ("german", "variant=austrian, spelling=old")
-toPolyglossia (Lang "de" _ (Just "AT") _ _ _)  = ("german", "variant=austrian")
-toPolyglossia (Lang "de" _ (Just "CH") vars _ _)
-  | "1901" `elem` vars        = ("german", "variant=swiss, spelling=old")
-toPolyglossia (Lang "de" _ (Just "CH") _ _ _) = ("german", "variant=swiss")
-toPolyglossia (Lang "de" _ _ _ _ _)           = ("german", "")
-toPolyglossia (Lang "dsb" _ _ _ _ _)          = ("lsorbian", "")
-toPolyglossia (Lang "el" _ _ vars _ _)
-  | "polyton" `elem` vars                     = ("greek",   "variant=poly")
-toPolyglossia (Lang "en" _ (Just "AU") _ _ _) = ("english", "variant=australian")
-toPolyglossia (Lang "en" _ (Just "CA") _ _ _) = ("english", "variant=canadian")
-toPolyglossia (Lang "en" _ (Just "GB") _ _ _) = ("english", "variant=british")
-toPolyglossia (Lang "en" _ (Just "NZ") _ _ _) = ("english", "variant=newzealand")
-toPolyglossia (Lang "en" _ (Just "UK") _ _ _) = ("english", "variant=british")
-toPolyglossia (Lang "en" _ (Just "US") _ _ _) = ("english", "variant=american")
-toPolyglossia (Lang "grc" _ _ _ _ _)          = ("greek",   "variant=ancient")
-toPolyglossia (Lang "hsb" _ _ _ _ _)          = ("usorbian", "")
-toPolyglossia (Lang "la" _ _ vars _ _)
-  | "x-classic" `elem` vars                   = ("latin", "variant=classic")
-toPolyglossia (Lang "pt" _ (Just "BR") _ _ _) = ("portuguese", "variant=brazilian")
-toPolyglossia (Lang "sl" _ _ _ _ _)           = ("slovenian", "")
-toPolyglossia x                               = (commonFromBcp47 x, "")
-
 -- Takes a list of the constituents of a BCP47 language code and
 -- converts it to a Babel language string.
 -- http://mirrors.ctan.org/macros/latex/required/babel/base/babel.pdf
diff --git a/src/Text/Pandoc/Writers/LaTeX/Util.hs b/src/Text/Pandoc/Writers/LaTeX/Util.hs
index c34338121..d79326e0d 100644
--- a/src/Text/Pandoc/Writers/LaTeX/Util.hs
+++ b/src/Text/Pandoc/Writers/LaTeX/Util.hs
@@ -26,7 +26,7 @@ import Control.Monad (when)
 import Text.Pandoc.Class (PandocMonad, toLang)
 import Text.Pandoc.Options (WriterOptions(..), isEnabled)
 import Text.Pandoc.Writers.LaTeX.Types (LW, WriterState(..))
-import Text.Pandoc.Writers.LaTeX.Lang (toPolyglossiaEnv)
+import Text.Pandoc.Writers.LaTeX.Lang (toBabel)
 import Text.Pandoc.Highlighting (toListingsLanguage)
 import Text.DocLayout
 import Text.Pandoc.Definition
@@ -238,13 +238,11 @@ wrapDiv (_,classes,kvs) t = do
                   Just "ltr" -> align "LTR"
                   _          -> id
       wrapLang txt = case lang of
-                       Just lng -> let (l, o) = toPolyglossiaEnv lng
-                                       ops = if T.null o
-                                             then ""
-                                             else brackets $ literal o
-                                   in  inCmd "begin" (literal l) <> ops
+                       Just lng -> let l = toBabel lng
+                                   in  inCmd "begin" "otherlanguage"
+                                            <> (braces (literal l))
                                        $$ blankline <> txt <> blankline
-                                       $$ inCmd "end" (literal l)
+                                       $$ inCmd "end" "otherlanguage"
                        Nothing  -> txt
   return $ wrapColumns . wrapColumn . wrapDir . wrapLang $ t