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-rw-r--r--runtime/syntax/rnoweb.vim52
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+" Vim syntax file
+" Language: R noweb Files
+" Maintainer: Johannes Ranke <jranke@uni-bremen.de>
+" Last Change: Thu Apr 05, 2018 11:06PM
+" Version: 0.9.1
+" Remarks: - This file is inspired by the proposal of
+" Fernando Henrique Ferraz Pereira da Rosa <feferraz@ime.usp.br>
+" http://www.ime.usp.br/~feferraz/en/sweavevim.html
+"
+
+if exists("b:current_syntax")
+ finish
+endif
+
+syn case match
+
+" Extension of Tex clusters {{{1
+runtime syntax/tex.vim
+unlet! b:current_syntax
+
+syn cluster texMatchGroup add=@rnoweb
+syn cluster texMathMatchGroup add=rnowebSexpr
+syn cluster texMathZoneGroup add=rnowebSexpr
+syn cluster texEnvGroup add=@rnoweb
+syn cluster texFoldGroup add=@rnoweb
+syn cluster texDocGroup add=@rnoweb
+syn cluster texPartGroup add=@rnoweb
+syn cluster texChapterGroup add=@rnoweb
+syn cluster texSectionGroup add=@rnoweb
+syn cluster texSubSectionGroup add=@rnoweb
+syn cluster texSubSubSectionGroup add=@rnoweb
+syn cluster texParaGroup add=@rnoweb
+
+" Highlighting of R code using an existing r.vim syntax file if available {{{1
+syn include @rnowebR syntax/r.vim
+syn region rnowebChunk matchgroup=rnowebDelimiter start="^<<.*>>=" matchgroup=rnowebDelimiter end="^@" contains=@rnowebR,rnowebChunkReference,rnowebChunk fold keepend
+syn match rnowebChunkReference "^<<.*>>$" contained
+syn region rnowebSexpr matchgroup=Delimiter start="\\Sexpr{" matchgroup=Delimiter end="}" contains=@rnowebR contained
+
+" Sweave options command {{{1
+syn region rnowebSweaveopts matchgroup=Delimiter start="\\SweaveOpts{" matchgroup=Delimiter end="}"
+
+" rnoweb Cluster {{{1
+syn cluster rnoweb contains=rnowebChunk,rnowebChunkReference,rnowebDelimiter,rnowebSexpr,rnowebSweaveopts
+
+" Highlighting {{{1
+hi def link rnowebDelimiter Delimiter
+hi def link rnowebSweaveOpts Statement
+hi def link rnowebChunkReference Delimiter
+
+let b:current_syntax = "rnoweb"
+" vim: foldmethod=marker: