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+" Vim indent file
+" Language: Mathematica
+" Author: steve layland <layland@wolfram.com>
+" Last Change: Sat May 10 18:56:22 CDT 2005
+" Source: http://vim.sourceforge.net/scripts/script.php?script_id=1274
+" http://members.wolfram.com/layland/vim/indent/mma.vim
+"
+" NOTE:
+" Empty .m files will automatically be presumed to be Matlab files
+" unless you have the following in your .vimrc:
+"
+" let filetype_m="mma"
+"
+" Credits:
+" o steve hacked this out of a random indent file in the Vim 6.1
+" distribution that he no longer remembers...sh.vim? Thanks!
+
+" Only load this indent file when no other was loaded.
+if exists("b:did_indent")
+ finish
+endif
+let b:did_indent = 1
+
+setlocal indentexpr=GetMmaIndent()
+setlocal indentkeys+=0[,0],0(,0)
+setlocal nosi "turn off smart indent so we don't over analyze } blocks
+
+if exists("*GetMmaIndent")
+ finish
+endif
+
+function GetMmaIndent()
+
+ " Hit the start of the file, use zero indent.
+ if v:lnum == 0
+ return 0
+ endif
+
+ " Find a non-blank line above the current line.
+ let lnum = prevnonblank(v:lnum - 1)
+
+ " use indenting as a base
+ let ind = indent(v:lnum)
+ let lnum = v:lnum
+
+ " if previous line has an unmatched bracket, or ( indent.
+ " doesn't do multiple parens/blocks/etc...
+
+ " also, indent only if this line if this line isn't starting a new
+ " block... TODO - fix this with indentkeys?
+ if getline(v:lnum-1) =~ '\\\@<!\%(\[[^\]]*\|([^)]*\|{[^}]*\)$' && getline(v:lnum) !~ '\s\+[\[({]'
+ let ind = ind+&sw
+ endif
+
+ " if this line had unmatched closing block,
+ " indent to the matching opening block
+ if getline(v:lnum) =~ '[^[]*]\s*$'
+ " move to the closing bracket
+ call search(']','bW')
+ " and find it's partner's indent
+ let ind = indent(searchpair('\[','',']','bWn'))
+ " same for ( blocks
+ elseif getline(v:lnum) =~ '[^(]*)$'
+ call search(')','bW')
+ let ind = indent(searchpair('(','',')','bWn'))
+
+ " and finally, close { blocks if si ain't already set
+ elseif getline(v:lnum) =~ '[^{]*}'
+ call search('}','bW')
+ let ind = indent(searchpair('{','','}','bWn'))
+ endif
+
+ return ind
+endfunction
+