Initial class construction

Git/usr/share/vim/vim81/indent/rnoweb.vim

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+" Vim indent file
+" Language:	Rnoweb
+" Author:	Jakson Alves de Aquino <jalvesaq@gmail.com>
+" Homepage:     https://github.com/jalvesaq/R-Vim-runtime
+" Last Change:	Fri Apr 15, 2016  10:58PM
+
+
+" Only load this indent file when no other was loaded.
+if exists("b:did_indent")
+  finish
+endif
+runtime indent/tex.vim
+
+function! s:NoTeXIndent()
+  return indent(line("."))
+endfunction
+
+if &indentexpr == "" || &indentexpr == "GetRnowebIndent()"
+  let s:TeXIndent = function("s:NoTeXIndent")
+else
+  let s:TeXIndent = function(substitute(&indentexpr, "()", "", ""))
+endif
+
+unlet! b:did_indent
+runtime indent/r.vim
+let s:RIndent = function(substitute(&indentexpr, "()", "", ""))
+let b:did_indent = 1
+
+setlocal indentkeys=0{,0},!^F,o,O,e,},=\bibitem,=\item
+setlocal indentexpr=GetRnowebIndent()
+
+if exists("*GetRnowebIndent")
+  finish
+endif
+
+function GetRnowebIndent()
+  let curline = getline(".")
+  if curline =~ '^<<.*>>=$' || curline =~ '^\s*@$'
+    return 0
+  endif
+  if search("^<<", "bncW") > search("^@", "bncW")
+    return s:RIndent()
+  endif
+  return s:TeXIndent()
+endfunction
+
+" vim: sw=2