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1 " Vim indent file
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2 " Language: Vim script
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3 " Maintainer: Bram Moolenaar <Bram@vim.org>
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4 " Last Change: 2003 May 25
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5
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6 " Only load this indent file when no other was loaded.
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7 if exists("b:did_indent")
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8 finish
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9 endif
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10 let b:did_indent = 1
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11
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12 setlocal indentexpr=GetVimIndent()
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13 setlocal indentkeys+==end,=else,=cat,=fina,=END,0\\
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14
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15 " Only define the function once.
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16 if exists("*GetVimIndent")
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17 finish
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18 endif
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19
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20 function GetVimIndent()
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21 " Find a non-blank line above the current line.
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22 let lnum = prevnonblank(v:lnum - 1)
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23
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24 " If the current line doesn't start with '\' and below a line that starts
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25 " with '\', use the indent of the line above it.
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26 if getline(v:lnum) !~ '^\s*\\'
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27 while lnum > 0 && getline(lnum) =~ '^\s*\\'
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28 let lnum = lnum - 1
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29 endwhile
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30 endif
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31
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32 " At the start of the file use zero indent.
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33 if lnum == 0
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34 return 0
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35 endif
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36
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37 " Add a 'shiftwidth' after :if, :while, :try, :catch, :finally, :function
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38 " and :else. Add it three times for a line that starts with '\' after
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39 " a line that doesn't.
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40 let ind = indent(lnum)
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41 if getline(v:lnum) =~ '^\s*\\' && v:lnum > 1 && getline(lnum) !~ '^\s*\\'
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42 let ind = ind + &sw * 3
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43 elseif getline(lnum) =~ '\(^\||\)\s*\(if\|wh\%[ile]\|try\|cat\%[ch]\|fina\%[lly]\|fu\%[nction]\|el\%[seif]\)\>'
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44 let ind = ind + &sw
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45 elseif getline(lnum) =~ '^\s*aug\%[roup]' && getline(lnum) !~ '^\s*aug\%[roup]\s*!\=\s\+END'
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46 let ind = ind + &sw
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47 endif
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48
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49 " If the previous line contains an "end" after a pipe, but not in an ":au"
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50 " command.
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51 if getline(lnum) =~ '|\s*\(ene\@!\)' && getline(lnum) !~ '^\s*au\%[tocmd]'
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52 let ind = ind - &sw
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53 endif
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54
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55
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56 " Subtract a 'shiftwidth' on a :endif, :endwhile, :catch, :finally, :endtry,
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57 " :endfun, :else and :augroup END.
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58 if getline(v:lnum) =~ '^\s*\(ene\@!\|cat\|fina\|el\|aug\%[roup]\s*!\=\s\+END\)'
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59 let ind = ind - &sw
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60 endif
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61
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62 return ind
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63 endfunction
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64
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65 " vim:sw=2
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