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-rw-r--r--src/Text/Pandoc/Readers/Groff.hs2
1 files changed, 1 insertions, 1 deletions
diff --git a/src/Text/Pandoc/Readers/Groff.hs b/src/Text/Pandoc/Readers/Groff.hs
index e0b9d9c94..2e335362f 100644
--- a/src/Text/Pandoc/Readers/Groff.hs
+++ b/src/Text/Pandoc/Readers/Groff.hs
@@ -245,7 +245,7 @@ escape = do
-- \s-1 \s0
escFontSize :: PandocMonad m => GroffLexer m [LinePart]
escFontSize = do
- let sign = option "" $ count 1 (oneOf "+-")
+ let sign = option "" $ ("-" <$ char '-' <|> "" <$ char '+')
let toFontSize xs =
case safeRead xs of
Nothing -> mzero