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60 lines
1.6 KiB
VimL
60 lines
1.6 KiB
VimL
" Vim indent file
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" Language: Lua script
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" Maintainer: Marcus Aurelius Farias <marcus.cf 'at' bol.com.br>
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" First Author: Max Ischenko <mfi 'at' ukr.net>
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" Last Change: 2005 Jun 23
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" Only load this indent file when no other was loaded.
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if exists("b:did_indent")
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finish
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endif
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let b:did_indent = 1
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setlocal indentexpr=GetLuaIndent()
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" To make Vim call GetLuaIndent() when it finds '\s*end' or '\s*until'
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" on the current line ('else' is default and includes 'elseif').
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setlocal indentkeys+=0=end,0=until
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setlocal autoindent
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" Only define the function once.
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if exists("*GetLuaIndent")
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finish
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endif
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function! GetLuaIndent()
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" Find a non-blank line above the current line.
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let lnum = prevnonblank(v:lnum - 1)
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" Hit the start of the file, use zero indent.
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if lnum == 0
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return 0
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endif
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" Add a 'shiftwidth' after lines that start a block:
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" 'function', 'if', 'for', 'while', 'repeat', 'else', 'elseif', '{'
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let ind = indent(lnum)
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let flag = 0
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let prevline = getline(lnum)
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if prevline =~ '^\s*\%(if\>\|for\>\|while\>\|repeat\>\|else\>\|elseif\>\|do\>\|then\>\)'
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\ || prevline =~ '{\s*$' || prevline =~ '\<function\>\s*\%(\k\|[.:]\)\{-}\s*('
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let ind = ind + &shiftwidth
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let flag = 1
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endif
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" Subtract a 'shiftwidth' after lines ending with
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" 'end' when they begin with 'while', 'if', 'for', etc. too.
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if flag == 1 && prevline =~ '\<end\>\|\<until\>'
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let ind = ind - &shiftwidth
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endif
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" Subtract a 'shiftwidth' on end, else (and elseif), until and '}'
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" This is the part that requires 'indentkeys'.
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if getline(v:lnum) =~ '^\s*\%(end\|else\|until\|}\)'
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let ind = ind - &shiftwidth
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endif
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return ind
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endfunction
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