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1 " Vim indent file
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2 " Language: bst
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3 " Author: Tim Pope <vimNOSPAM@tpope.info>
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39
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4 " $Id: bst.vim,v 1.1 2007/05/05 18:11:12 vimboss Exp $
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5
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6 if exists("b:did_indent")
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7 finish
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8 endif
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9 let b:did_indent = 1
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10
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11 setlocal expandtab
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12 setlocal indentexpr=GetBstIndent(v:lnum)
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13 "setlocal smartindent
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14 setlocal cinkeys&
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15 setlocal cinkeys-=0#
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16 setlocal indentkeys&
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17 "setlocal indentkeys+=0%
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18
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19 " Only define the function once.
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20 if exists("*GetBstIndent")
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21 finish
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22 endif
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23
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24 function! s:prevgood(lnum)
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25 " Find a non-blank line above the current line.
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26 " Skip over comments.
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27 let lnum = a:lnum
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28 while lnum > 0
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29 let lnum = prevnonblank(lnum - 1)
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30 if getline(lnum) !~ '^\s*%.*$'
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31 break
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32 endif
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33 endwhile
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34 return lnum
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35 endfunction
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36
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37 function! s:strip(lnum)
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38 let line = getline(a:lnum)
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39 let line = substitute(line,'"[^"]*"','""','g')
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40 let line = substitute(line,'%.*','','')
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41 let line = substitute(line,'^\s\+','','')
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42 return line
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43 endfunction
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44
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45 function! s:count(string,char)
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46 let str = substitute(a:string,'[^'.a:char.']','','g')
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47 return strlen(str)
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48 endfunction
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49
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50 function! GetBstIndent(lnum) abort
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51 if a:lnum == 1
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52 return 0
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53 endif
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54 let lnum = s:prevgood(a:lnum)
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55 if lnum <= 0
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56 return indent(a:lnum - 1)
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57 endif
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58 let line = s:strip(lnum)
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59 let cline = s:strip(a:lnum)
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60 if cline =~ '^}' && exists("b:current_syntax")
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61 call cursor(a:lnum,indent(a:lnum))
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62 if searchpair('{','','}','bW',"synIDattr(synID(line('.'),col('.'),1),'name') =~? 'comment\\|string'")
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63 if col('.')+1 == col('$')
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64 return indent('.')
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65 else
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66 return virtcol('.')-1
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67 endif
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68 endif
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69 endif
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70 let fakeline = substitute(line,'^}','','').matchstr(cline,'^}')
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71 let ind = indent(lnum)
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72 let ind = ind + &sw * s:count(line,'{')
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73 let ind = ind - &sw * s:count(fakeline,'}')
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74 return ind
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75 endfunction
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