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a39bf01958
Update runtime files.
Includes changing &sw to shiftwidth() for all indent scripts.
3ec574f2b5
59 lines
1.5 KiB
VimL
59 lines
1.5 KiB
VimL
" vim: set sw=4 sts=4:
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" Maintainer : Gergely Kontra <kgergely@mcl.hu>
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" Revised on : 2002.02.18. 23:34:05
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" Language : Prolog
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" TODO:
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" checking with respect to syntax highlighting
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" ignoring multiline comments
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" detecting multiline strings
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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=GetPrologIndent()
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setlocal indentkeys-=:,0#
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setlocal indentkeys+=0%,-,0;,>,0)
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" Only define the function once.
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"if exists("*GetPrologIndent")
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" finish
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"endif
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function! GetPrologIndent()
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" Find a non-blank line above the current line.
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let pnum = prevnonblank(v:lnum - 1)
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" Hit the start of the file, use zero indent.
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if pnum == 0
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return 0
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endif
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let line = getline(v:lnum)
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let pline = getline(pnum)
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let ind = indent(pnum)
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" Previous line was comment -> use previous line's indent
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if pline =~ '^\s*%'
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retu ind
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endif
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" Check for clause head on previous line
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if pline =~ ':-\s*\(%.*\)\?$'
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let ind = ind + shiftwidth()
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" Check for end of clause on previous line
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elseif pline =~ '\.\s*\(%.*\)\?$'
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let ind = ind - shiftwidth()
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endif
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" Check for opening conditional on previous line
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if pline =~ '^\s*\([(;]\|->\)'
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let ind = ind + shiftwidth()
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endif
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" Check for closing an unclosed paren, or middle ; or ->
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if line =~ '^\s*\([);]\|->\)'
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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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