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271
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1 " Vim indent file
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25880
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2 " Language: Mathematica
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3 " Maintainer: Steve Layland <layland@wolfram.com> (Invalid email address)
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4 " Doug Kearns <dougkearns@gmail.com>
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5 " Last Change: Sat May 10 18:56:22 CDT 2005
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6 " 2022 April: b:undo_indent added by Doug Kearns
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7 " Source: http://vim.sourceforge.net/scripts/script.php?script_id=1274
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8 " http://members.wolfram.com/layland/vim/indent/mma.vim
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9 "
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10 " NOTE:
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11 " Empty .m files will automatically be presumed to be Matlab files
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12 " unless you have the following in your .vimrc:
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13 "
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14 " let filetype_m="mma"
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15 "
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16 " Credits:
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856
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17 " o steve hacked this out of a random indent file in the Vim 6.1
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271
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18 " distribution that he no longer remembers...sh.vim? Thanks!
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19
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20 " Only load this indent file when no other was loaded.
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21 if exists("b:did_indent")
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22 finish
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23 endif
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24 let b:did_indent = 1
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25
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26 setlocal indentexpr=GetMmaIndent()
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27 setlocal indentkeys+=0[,0],0(,0)
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28 setlocal nosi "turn off smart indent so we don't over analyze } blocks
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29
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30 let b:undo_indent = "setl inde< indk< si<"
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31
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32 if exists("*GetMmaIndent")
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33 finish
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34 endif
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35
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36 function GetMmaIndent()
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37
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38 " Hit the start of the file, use zero indent.
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39 if v:lnum == 0
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40 return 0
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41 endif
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42
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43 " Find a non-blank line above the current line.
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44 let lnum = prevnonblank(v:lnum - 1)
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45
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46 " use indenting as a base
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47 let ind = indent(v:lnum)
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48 let lnum = v:lnum
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49
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50 " if previous line has an unmatched bracket, or ( indent.
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51 " doesn't do multiple parens/blocks/etc...
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52
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53 " also, indent only if this line if this line isn't starting a new
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54 " block... TODO - fix this with indentkeys?
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55 if getline(v:lnum-1) =~ '\\\@<!\%(\[[^\]]*\|([^)]*\|{[^}]*\)$' && getline(v:lnum) !~ '\s\+[\[({]'
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56 let ind = ind+shiftwidth()
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57 endif
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58
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59 " if this line had unmatched closing block,
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60 " indent to the matching opening block
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61 if getline(v:lnum) =~ '[^[]*]\s*$'
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62 " move to the closing bracket
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63 call search(']','bW')
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64 " and find its partner's indent
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65 let ind = indent(searchpair('\[','',']','bWn'))
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66 " same for ( blocks
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67 elseif getline(v:lnum) =~ '[^(]*)$'
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68 call search(')','bW')
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69 let ind = indent(searchpair('(','',')','bWn'))
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70
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71 " and finally, close { blocks if si ain't already set
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72 elseif getline(v:lnum) =~ '[^{]*}'
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73 call search('}','bW')
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74 let ind = indent(searchpair('{','','}','bWn'))
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75 endif
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76
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77 return ind
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78 endfunction
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79
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