Revert "EPUB writer: stylesheet changes. Closes #2040."

This reverts commit 1c2951dfd9ee72e5270cb974a06098adb9178f89.

See #2040.

The semantics was too squishy.  `--css` takes a URL, but
for EPUB we need files that we can read.  I prefer keeping
the old system for now, with `--epub-stylesheet`.

1 files changed, 2 insertions, 4 deletions

diff --git a/pandoc.hs b/pandoc.hs
index 45e5de5f2..9023b2625 100644
--- a/pandoc.hs
+++ b/pandoc.hs
@@ -689,10 +689,8 @@ options =
     , Option "" ["epub-stylesheet"]
                  (ReqArg
                   (\arg opt -> do
-                     warn "--epub-stylesheet is deprecated. Use --css or stylesheet in metadata."
-                     let newvars = optVariables opt ++ [("css",arg)]
-                     return opt { optVariables = newvars,
-                                  optStandalone = True })
+                     text <- UTF8.readFile arg
+                     return opt { optEpubStylesheet = Just text })
                   "FILENAME")
                  "" -- "Path of epub.css"