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unlexing latex code: no space between closing $ and punctuation

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aarne
2014-10-17 07:04:50 +00:00
parent 42cfacbf86
commit 2caf6fa125
1 changed files with 6 additions and 3 deletions
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9
src/runtime/haskell/PGF/Lexing.hs
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@@ -81,10 +81,13 @@ unlexMixed = capitInit . concat . alternate False where
alternate env s = case s of
_:_ -> case break (=="$") s of
(t,[]) -> unlex env t : []
(t,c:m) -> unlex env t : sep env c : alternate (not env) m
(t,c:m) -> unlex env t : sep env c m : alternate (not env) m
_ -> []
unlex env = if env then unlexCode else unlexText
sep env c = if env then c ++ " " else " " ++ c
unlex env = if env then unlexCode else (uncapitInit . unlexText)
sep env c m = case (m,env) of
([p]:_,True) | isPunct p -> c -- closing $ glued to next punct
(_, True) -> c ++ " " -- closing $ otherwise separated by space from what follows
_ -> " " ++ c -- put space before opening $
-- * Additional lexing uitilties