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