Update runtime files.
diff --git a/runtime/syntax/sh.vim b/runtime/syntax/sh.vim
index 8305394..efe0bcb 100644
--- a/runtime/syntax/sh.vim
+++ b/runtime/syntax/sh.vim
@@ -2,8 +2,8 @@
" Language: shell (sh) Korn shell (ksh) bash (sh)
" Maintainer: Charles E. Campbell <NdrOchipS@PcampbellAfamily.Mbiz>
" Previous Maintainer: Lennart Schultz <Lennart.Schultz@ecmwf.int>
-" Last Change: Oct 21, 2015
-" Version: 141
+" Last Change: Nov 09, 2015
+" Version: 142
" URL: http://www.drchip.org/astronaut/vim/index.html#SYNTAX_SH
" For options and settings, please use: :help ft-sh-syntax
" This file includes many ideas from Eric Brunet (eric.brunet@ens.fr)
@@ -116,7 +116,7 @@
syn cluster shArithList contains=@shArithParenList,shParenError
syn cluster shCaseEsacList contains=shCaseStart,shCase,shCaseBar,shCaseIn,shComment,shDeref,shDerefSimple,shCaseCommandSub,shCaseExSingleQuote,shCaseSingleQuote,shCaseDoubleQuote,shCtrlSeq,@shErrorList,shStringSpecial,shCaseRange
syn cluster shCaseList contains=@shCommandSubList,shCaseEsac,shColon,shCommandSub,shComment,shDo,shEcho,shExpr,shFor,shHereDoc,shIf,shRedir,shSetList,shSource,shStatement,shVariable,shCtrlSeq
-syn cluster shCommandSubList contains=shAlias,shArithmetic,shCmdParenRegion,shCtrlSeq,shDeref,shDerefSimple,shDoubleQuote,shEcho,shEscape,shExDoubleQuote,shExpr,shExSingleQuote,shNumber,shOperator,shOption,shPosnParm,shSingleQuote,shSpecial,shStatement,shSubSh,shTest,shVariable
+syn cluster shCommandSubList contains=shAlias,shArithmetic,shComment,shCmdParenRegion,shCtrlSeq,shDeref,shDerefSimple,shDoubleQuote,shEcho,shEscape,shExDoubleQuote,shExpr,shExSingleQuote,shNumber,shOperator,shOption,shPosnParm,shSingleQuote,shSpecial,shStatement,shSubSh,shTest,shVariable
syn cluster shCurlyList contains=shNumber,shComma,shDeref,shDerefSimple,shDerefSpecial
syn cluster shDblQuoteList contains=shCommandSub,shDeref,shDerefSimple,shEscape,shPosnParm,shCtrlSeq,shSpecial
syn cluster shDerefList contains=shDeref,shDerefSimple,shDerefVar,shDerefSpecial,shDerefWordError,shDerefPPS
@@ -414,7 +414,7 @@
if !exists("g:sh_no_error")
syn match shDerefWordError "[^}$[]" contained
endif
-syn match shDerefSimple "\$\k\+\|\d"
+syn match shDerefSimple "\$\%(\k\+\|\d\)"
syn region shDeref matchgroup=PreProc start="\${" end="}" contains=@shDerefList,shDerefVarArray
syn match shDerefSimple "\$[-#*@!?]"
syn match shDerefSimple "\$\$"