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" Vim indent file
" Language: Liquid
" Maintainer: Tim Pope <vimNOSPAM@tpope.org>
" Last Change: 2022 Mar 15
if exists('b:did_indent')
finish
endif
set indentexpr=
if exists('b:liquid_subtype')
exe 'runtime! indent/'.b:liquid_subtype.'.vim'
else
runtime! indent/html.vim
endif
unlet! b:did_indent
if &l:indentexpr == ''
if &l:cindent
let &l:indentexpr = 'cindent(v:lnum)'
else
let &l:indentexpr = 'indent(prevnonblank(v:lnum-1))'
endif
endif
let b:liquid_subtype_indentexpr = &l:indentexpr
let b:did_indent = 1
setlocal indentexpr=GetLiquidIndent()
setlocal indentkeys=o,O,*<Return>,<>>,{,},0),0],o,O,!^F,=end,=endif,=endunless,=endifchanged,=endcase,=endfor,=endtablerow,=endcapture,=else,=elsif,=when,=empty
let b:undo_indent = "setl inde< indk<"
" Only define the function once.
if exists('*GetLiquidIndent')
finish
endif
function! s:count(string, pattern) abort
let string = substitute(a:string,'\C'.a:pattern,"\n",'g')
return strlen(substitute(string,"[^\n]",'','g'))
endfunction
function! GetLiquidIndent(...) abort
if a:0 && a:1 == '.'
let v:lnum = line('.')
elseif a:0 && a:1 =~ '^\d'
let v:lnum = a:1
endif
let vcol = col('.')
call cursor(v:lnum,1)
exe "let ind = ".b:liquid_subtype_indentexpr
let lnum = prevnonblank(v:lnum-1)
let line = getline(lnum)
let cline = getline(v:lnum)
let line = substitute(line,'\C^\%(\s*{%-\=\s*end\w*\s*-\=%}\)\+','','')
let line = substitute(line,'\C\%(\s*{%-\=\s*if.\+-\=%}.\+{%-\=\s*endif\s*-\=%}\)\+','','g')
let line .= matchstr(cline,'\C^\%(\s*{%-\=\s*end\w*\s*-\=%}\)\+')
let cline = substitute(cline,'\C^\%(\s*{%-\=\s*end\w*\s*-\=%}\)\+','','')
let sw = shiftwidth()
let ind += sw * s:count(line,'{%-\=\s*\%(if\|elsif\|else\|unless\|ifchanged\|case\|when\|for\|empty\|tablerow\|capture\)\>')
let ind -= sw * s:count(line,'{%-\=\s*end\%(if\|unless\|ifchanged\|case\|for\|tablerow\|capture\)\>')
let ind -= sw * s:count(cline,'{%-\=\s*\%(elsif\|else\|when\|empty\)\>')
let ind -= sw * s:count(cline,'{%-\=\s*end\w*$')
return ind
endfunction
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