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X.A.Search: Make (!>) right associative

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Unless specified otherwise, operators in Haskell associative to the
left.  However, the ergonomics of (!>) heavily lean towards the left
operand being a "single" search engine, not a combined one.

This causes trouble when not using `multi` or defining search engines
with a right fold, but (following the documentation) writing something
like

    multiEngine = intelligent (wikipedia !> mathworld !> (prefixAware google))

instead.  This particular definition would force the user to write
`wikipedia/mathworld:wikipedia:search-term` instead of just
`wikipedia:search-term` to access the first search engine.

Simply giving (!>) an explicit associativity fixes these problems.
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slotThe 2021-10-19 18:44:04 +02:00
parent 586416b0f9
commit 8e0e8a605d
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XMonad/Actions/Search.hs
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@ -348,6 +348,7 @@ removeColonPrefix s = if ':' `elem` s then drop 1 $ dropWhile (':' /=) s else s
google. The use of intelligent will make sure that URLs are opened directly. -}
(!>) :: SearchEngine -> SearchEngine -> SearchEngine
(SearchEngine name1 site1) !> (SearchEngine name2 site2) = searchEngineF (name1 ++ "/" ++ name2) (\s -> if (name1++":") `isPrefixOf` s then site1 (removeColonPrefix s) else site2 s)
infixr 6 !>
{- | Makes a search engine prefix-aware. Especially useful together with '!>'.
It will automatically remove the prefix from a query so that you don\'t end