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kakoune/rc/extra/cabal.kak
Maxime Coste d49555fc75 Move highlighters into Scopes
That means we can now have highlighters active at global, buffer, and
window scope. The add-highlighter and remove-highlighter syntax changed
to take the parent path (scope/group/...) as a mandatory argument,
superseeding the previous -group switch.
2017-10-28 13:43:04 +08:00

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# http://haskell.org/cabal
# ‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾
# Detection
# ‾‾‾‾‾‾‾‾‾
hook global BufCreate .*[.](cabal) %{
set buffer filetype cabal
}
# Highlighters
# ‾‾‾‾‾‾‾‾‾‾‾‾
add-highlighter shared/ regions -default code cabal \
comment (--) $ '' \
comment \{- -\} \{-
add-highlighter shared/cabal/comment fill comment
add-highlighter shared/cabal/code regex \b(true|false)\b|(([<>]?=?)?\d+(\.\d+)+) 0:value
add-highlighter shared/cabal/code regex \b(if|else)\b 0:keyword
add-highlighter shared/cabal/code regex ^\h*([A-Za-z][A-Za-z0-9_-]*)\h*: 1:variable
# Commands
# ‾‾‾‾‾‾‾‾
def -hidden cabal-filter-around-selections %{
# remove trailing white spaces
try %{ exec -draft -itersel <a-x> s \h+$ <ret> d }
}
def -hidden cabal-indent-on-new-line %[
eval -draft -itersel %[
# copy '#' comment prefix and following white spaces
try %[ exec -draft k <a-x> s ^\h*\K#\h* <ret> y gh j P ]
# preserve previous line indent
try %[ exec -draft \; K <a-&> ]
# filter previous line
try %[ exec -draft k : cabal-filter-around-selections <ret> ]
# indent after lines ending with { or :
try %[ exec -draft <space> k <a-x> <a-k> [:{]$ <ret> j <a-gt> ]
]
]
def -hidden cabal-indent-on-opening-curly-brace %[
eval -draft -itersel %[
# align indent with opening paren when { is entered on a new line after the closing paren
try %[ exec -draft h <a-F> ) M <a-k> \A\(.*\)\h*\n\h*\{\z <ret> s \A|.\z <ret> 1<a-&> ]
]
]
def -hidden cabal-indent-on-closing-curly-brace %[
eval -draft -itersel %[
# align to opening curly brace when alone on a line
try %[ exec -draft <a-h> <a-k> ^\h+\}$ <ret> h m s \A|.\z<ret> 1<a-&> ]
]
]
# Initialization
# ‾‾‾‾‾‾‾‾‾‾‾‾‾‾
hook -group cabal-highlight global WinSetOption filetype=cabal %{ add-highlighter window ref cabal }
hook global WinSetOption filetype=cabal %[
hook window InsertEnd .* -group cabal-hooks cabal-filter-around-selections
hook window InsertChar \n -group cabal-indent cabal-indent-on-new-line
hook window InsertChar \{ -group cabal-indent cabal-indent-on-opening-curly-brace
hook window InsertChar \} -group cabal-indent cabal-indent-on-closing-curly-brace
]
hook -group cabal-highlight global WinSetOption filetype=(?!cabal).* %{ remove-highlighter window/cabal }
hook global WinSetOption filetype=(?!cabal).* %{
remove-hooks window cabal-indent
remove-hooks window cabal-hooks
}