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76 lines
2.5 KiB
Plaintext
76 lines
2.5 KiB
Plaintext
# http://haskell.org
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# ‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾
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# Detection
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# ‾‾‾‾‾‾‾‾‾
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hook global BufSetOption mimetype=text/x-haskell %{
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set buffer filetype haskell
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}
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hook global BufCreate .*[.](hs) %{
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set buffer filetype haskell
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}
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# Highlighters
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# ‾‾‾‾‾‾‾‾‾‾‾‾
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addhl -group / regions -default code haskell \
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string '"' (?<!\\)(\\\\)*" '' \
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comment (--) $ '' \
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comment \{- -\} \{- \
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macro ^\h*?\K# (?<!\\)\n ''
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addhl -group /haskell/string fill string
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addhl -group /haskell/comment fill comment
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addhl -group /haskell/macro fill meta
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addhl -group /haskell/code regex \<(import)\> 0:meta
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addhl -group /haskell/code regex \<(True|False)\> 0:value
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addhl -group /haskell/code regex \<(as|case|class|data|default|deriving|do|else|hiding|if|in|infix|infixl|infixr|instance|let|module|newtype|of|qualified|then|type|where)\> 0:keyword
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addhl -group /haskell/code regex \<(Int|Integer|Char|Bool|Float|Double|IO|Void|Addr|Array|String)\> 0:type
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# Commands
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# ‾‾‾‾‾‾‾‾
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# http://en.wikibooks.org/wiki/Haskell/Indentation
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def -hidden _haskell_filter_around_selections %{
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eval -draft -itersel %{
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exec <a-x>
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# remove trailing white spaces
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try %{ exec -draft s \h+$ <ret> d }
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}
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}
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def -hidden _haskell_indent_on_new_line %{
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eval -draft -itersel %{
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# preserve previous line indent
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try %{ exec -draft <space> K <a-&> }
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# align to first clause
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try %{ exec -draft <space> k x X s ^\h*(if|then|else)?\h*(([\w']+\h+)+=)?\h*(case\h+[\w']+\h+of|do|let|where)\h+\K.* <ret> s \`|.\' <ret> & }
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# filter previous line
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try %{ exec -draft k : _haskell_filter_around_selections <ret> }
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# copy -- comments prefix and following white spaces
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try %{ exec -draft k x s ^\h*\K--\h* <ret> y j p }
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# indent after lines beginning with condition or ending with expression or =(
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try %{ exec -draft <space> k x <a-k> ^\h*(if)|(case\h+[\w']+\h+of|do|let|where|[=(])$ <ret> j <a-gt> }
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}
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}
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# Initialization
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# ‾‾‾‾‾‾‾‾‾‾‾‾‾‾
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hook global WinSetOption filetype=haskell %{
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addhl ref haskell
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hook window InsertEnd .* -group haskell-hooks _haskell_filter_around_selections
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hook window InsertChar \n -group haskell-indent _haskell_indent_on_new_line
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}
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hook global WinSetOption filetype=(?!haskell).* %{
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rmhl haskell
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rmhooks window haskell-indent
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rmhooks window haskell-hooks
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}
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