vim-polyglot/indent/cabal.vim

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if !exists('g:polyglot_disabled') || index(g:polyglot_disabled, 'haskell') == -1
" indentation for cabal
"
" author: raichoo (raichoo@googlemail.com)
"
if exists('b:did_indent')
finish
endif
let b:did_indent = 1
if !exists('g:cabal_indent_section')
"executable name
">>main-is: Main.hs
">>hs-source-dirs: src
let g:cabal_indent_section = 2
elseif exists('g:cabal_indent_section') && g:cabal_indent_section > 4
let g:cabal_indent_section = 4
endif
setlocal indentexpr=GetCabalIndent()
setlocal indentkeys=!^F,o,O,<CR>
function! GetCabalIndent()
let l:prevline = getline(v:lnum - 1)
if l:prevline =~ '\C^\(executable\|library\|flag\|source-repository\|test-suite\|benchmark\)'
return g:cabal_indent_section
else
return match(l:prevline, '\S')
endif
endfunction
endif