diff --git a/runtime/syntax/sh.vim b/runtime/syntax/sh.vim
index 711971e..34b8ab7 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:		Jun 10, 2016
-" Version:		152
+" Last Change:		Jul 29, 2016
+" Version:		155
 " 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)
@@ -131,11 +131,11 @@
 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,shComment,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,shHereDoc,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,shDerefPSR,shDerefPPS
-syn cluster shDerefVarList	contains=shDerefOp,shDerefVarArray,shDerefOpError
+syn cluster shDerefVarList	contains=shDerefOff,shDerefOp,shDerefVarArray,shDerefOpError
 syn cluster shEchoList	contains=shArithmetic,shCommandSub,shDeref,shDerefSimple,shEscape,shExpr,shExSingleQuote,shExDoubleQuote,shSingleQuote,shDoubleQuote,shCtrlSeq,shEchoQuote
 syn cluster shExprList1	contains=shCharClass,shNumber,shOperator,shExSingleQuote,shExDoubleQuote,shSingleQuote,shDoubleQuote,shExpr,shDblBrace,shDeref,shDerefSimple,shCtrlSeq
 syn cluster shExprList2	contains=@shExprList1,@shCaseList,shTest
@@ -332,7 +332,7 @@
 " String And Character Constants: {{{1
 "================================
 syn match   shNumber	"\<\d\+\>#\="
-syn match   shNumber	"-\=\.\=\d\+\>#\="
+syn match   shNumber	"\<-\=\.\=\d\+\>#\="
 syn match   shCtrlSeq	"\\\d\d\d\|\\[abcfnrtv0]"			contained
 if exists("b:is_bash")
  syn match   shSpecial	"[^\\]\(\\\\\)*\zs\\\o\o\o\|\\x\x\x\|\\c[^"]\|\\[abefnrtv]"	contained
@@ -366,21 +366,21 @@
 
 " Here Documents: {{{1
 " =========================================
-ShFoldHereDoc syn region shHereDoc matchgroup=shHereDoc01 start="<<\s*\\\=\z([^ \t|]\+\)"		matchgroup=shHereDoc01 end="^\z1\s*$"	contains=@shDblQuoteList
-ShFoldHereDoc syn region shHereDoc matchgroup=shHereDoc02 start="<<\s*\"\z([^ \t|]\+\)\""		matchgroup=shHereDoc02 end="^\z1\s*$"
-ShFoldHereDoc syn region shHereDoc matchgroup=shHereDoc03 start="<<-\s*\z([^ \t|]\+\)"		matchgroup=shHereDoc03 end="^\s*\z1\s*$"	contains=@shDblQuoteList
-ShFoldHereDoc syn region shHereDoc matchgroup=shHereDoc04 start="<<-\s*'\z([^ \t|]\+\)'"		matchgroup=shHereDoc04 end="^\s*\z1\s*$"
-ShFoldHereDoc syn region shHereDoc matchgroup=shHereDoc05 start="<<\s*'\z([^ \t|]\+\)'"		matchgroup=shHereDoc05 end="^\z1\s*$"
-ShFoldHereDoc syn region shHereDoc matchgroup=shHereDoc06 start="<<-\s*\"\z([^ \t|]\+\)\""		matchgroup=shHereDoc06 end="^\s*\z1\s*$"
-ShFoldHereDoc syn region shHereDoc matchgroup=shHereDoc07 start="<<\s*\\\_$\_s*\z([^ \t|]\+\)"		matchgroup=shHereDoc07 end="^\z1\s*$"           contains=@shDblQuoteList
-ShFoldHereDoc syn region shHereDoc matchgroup=shHereDoc08 start="<<\s*\\\_$\_s*'\z([^ \t|]\+\)'"	matchgroup=shHereDoc08 end="^\z1\s*$"
-ShFoldHereDoc syn region shHereDoc matchgroup=shHereDoc09 start="<<\s*\\\_$\_s*\"\z([^ \t|]\+\)\""	matchgroup=shHereDoc09 end="^\z1\s*$"
-ShFoldHereDoc syn region shHereDoc matchgroup=shHereDoc10 start="<<-\s*\\\_$\_s*\z([^ \t|]\+\)"		matchgroup=shHereDoc10 end="^\s*\z1\s*$"	
-ShFoldHereDoc syn region shHereDoc matchgroup=shHereDoc11 start="<<-\s*\\\_$\_s*\\\z([^ \t|]\+\)"	matchgroup=shHereDoc11 end="^\s*\z1\s*$"	
-ShFoldHereDoc syn region shHereDoc matchgroup=shHereDoc12 start="<<-\s*\\\_$\_s*'\z([^ \t|]\+\)'"	matchgroup=shHereDoc12 end="^\s*\z1\s*$"
-ShFoldHereDoc syn region shHereDoc matchgroup=shHereDoc13 start="<<-\s*\\\_$\_s*\"\z([^ \t|]\+\)\""	matchgroup=shHereDoc13 end="^\s*\z1\s*$"
-ShFoldHereDoc syn region shHereDoc matchgroup=shHereDoc14 start="<<\\\z([^ \t|]\+\)"		matchgroup=shHereDoc14 end="^\z1\s*$"
-ShFoldHereDoc syn region shHereDoc matchgroup=shHereDoc15 start="<<-\s*\\\z([^ \t|]\+\)"		matchgroup=shHereDoc15 end="^\s*\z1\s*$"
+ShFoldHereDoc syn region shHereDoc matchgroup=shHereDoc01 start="<<\s*\\\=\z([^ \t|>]\+\)"		matchgroup=shHereDoc01 end="^\z1\s*$"	contains=@shDblQuoteList
+ShFoldHereDoc syn region shHereDoc matchgroup=shHereDoc02 start="<<\s*\"\z([^ \t|>]\+\)\""		matchgroup=shHereDoc02 end="^\z1\s*$"
+ShFoldHereDoc syn region shHereDoc matchgroup=shHereDoc03 start="<<-\s*\z([^ \t|>]\+\)"		matchgroup=shHereDoc03 end="^\s*\z1\s*$"	contains=@shDblQuoteList
+ShFoldHereDoc syn region shHereDoc matchgroup=shHereDoc04 start="<<-\s*'\z([^ \t|>]\+\)'"		matchgroup=shHereDoc04 end="^\s*\z1\s*$"
+ShFoldHereDoc syn region shHereDoc matchgroup=shHereDoc05 start="<<\s*'\z([^ \t|>]\+\)'"		matchgroup=shHereDoc05 end="^\z1\s*$"
+ShFoldHereDoc syn region shHereDoc matchgroup=shHereDoc06 start="<<-\s*\"\z([^ \t|>]\+\)\""		matchgroup=shHereDoc06 end="^\s*\z1\s*$"
+ShFoldHereDoc syn region shHereDoc matchgroup=shHereDoc07 start="<<\s*\\\_$\_s*\z([^ \t|>]\+\)"		matchgroup=shHereDoc07 end="^\z1\s*$"           contains=@shDblQuoteList
+ShFoldHereDoc syn region shHereDoc matchgroup=shHereDoc08 start="<<\s*\\\_$\_s*'\z([^ \t|>]\+\)'"	matchgroup=shHereDoc08 end="^\z1\s*$"
+ShFoldHereDoc syn region shHereDoc matchgroup=shHereDoc09 start="<<\s*\\\_$\_s*\"\z([^ \t|>]\+\)\""	matchgroup=shHereDoc09 end="^\z1\s*$"
+ShFoldHereDoc syn region shHereDoc matchgroup=shHereDoc10 start="<<-\s*\\\_$\_s*\z([^ \t|>]\+\)"	matchgroup=shHereDoc10 end="^\s*\z1\s*$"	
+ShFoldHereDoc syn region shHereDoc matchgroup=shHereDoc11 start="<<-\s*\\\_$\_s*\\\z([^ \t|>]\+\)"	matchgroup=shHereDoc11 end="^\s*\z1\s*$"	
+ShFoldHereDoc syn region shHereDoc matchgroup=shHereDoc12 start="<<-\s*\\\_$\_s*'\z([^ \t|>]\+\)'"	matchgroup=shHereDoc12 end="^\s*\z1\s*$"
+ShFoldHereDoc syn region shHereDoc matchgroup=shHereDoc13 start="<<-\s*\\\_$\_s*\"\z([^ \t|>]\+\)\""	matchgroup=shHereDoc13 end="^\s*\z1\s*$"
+ShFoldHereDoc syn region shHereDoc matchgroup=shHereDoc14 start="<<\\\z([^ \t|>]\+\)"		matchgroup=shHereDoc14 end="^\z1\s*$"
+ShFoldHereDoc syn region shHereDoc matchgroup=shHereDoc15 start="<<-\s*\\\z([^ \t|>]\+\)"		matchgroup=shHereDoc15 end="^\s*\z1\s*$"
 
 " Here Strings: {{{1
 " =============
@@ -427,7 +427,7 @@
 if !exists("g:sh_no_error")
  syn match  shDerefWordError	"[^}$[~]"	contained
 endif
-syn match  shDerefSimple	"\$\%(\k\+\|\d\)"
+syn match  shDerefSimple	"\$\%(\h\w*\|\d\)"
 syn region shDeref	matchgroup=PreProc start="\${" end="}"	contains=@shDerefList,shDerefVarArray
 syn match  shDerefSimple	"\$[-#*@!?]"
 syn match  shDerefSimple	"\$\$"
@@ -445,18 +445,18 @@
 " bash: ${!prefix*} and ${#parameter}: {{{1
 " ====================================
 if exists("b:is_bash")
- syn region shDeref	matchgroup=PreProc start="\${!" end="\*\=}"	contains=@shDerefList,shDerefOp
- syn match  shDerefVar	contained	"{\@<=!\k\+"		nextgroup=@shDerefVarList
+ syn region shDeref	matchgroup=PreProc start="\${!" end="\*\=}"	contains=@shDerefList,shDerefOff
+ syn match  shDerefVar	contained	"{\@<=!\h\w*"		nextgroup=@shDerefVarList
 endif
 if exists("b:is_kornshell")
- syn match  shDerefVar	contained	"{\@<=!\k[[:alnum:]_.]*"	nextgroup=@shDerefVarList
+ syn match  shDerefVar	contained	"{\@<=!\h\w*[[:alnum:]_.]*"	nextgroup=@shDerefVarList
 endif
 
 syn match  shDerefSpecial	contained	"{\@<=[-*@?0]"		nextgroup=shDerefOp,shDerefOpError
 syn match  shDerefSpecial	contained	"\({[#!]\)\@<=[[:alnum:]*@_]\+"	nextgroup=@shDerefVarList,shDerefOp
-syn match  shDerefVar	contained	"{\@<=\k\+"		nextgroup=@shDerefVarList
+syn match  shDerefVar	contained	"{\@<=\h\w*"		nextgroup=@shDerefVarList
 if exists("b:is_kornshell")
-  syn match  shDerefVar	contained	"{\@<=\k[[:alnum:]_.]*"	nextgroup=@shDerefVarList
+  syn match  shDerefVar	contained	"{\@<=\h\w*[[:alnum:]_.]*"	nextgroup=@shDerefVarList
 endif
 
 " sh ksh bash : ${var[... ]...}  array reference: {{{1
@@ -498,8 +498,9 @@
 if exists("b:is_bash")
  " bash : ${parameter:offset}
  " bash : ${parameter:offset:length}
- syn region shDerefOp	contained	start=":[$[:alnum:]_]"me=e-1 end=":"me=e-1 end="}"me=e-1 contains=@shCommandSubList nextgroup=shDerefPOL
- syn match  shDerefPOL	contained	":[^}]\+"	contains=@shCommandSubList
+ syn region shDerefOff	contained	start=':'	end='\ze:'	end='\ze}'	contains=shDeref,shDerefSimple	nextgroup=shDerefLen,shDeref,shDerefSimple
+ syn region shDerefOff	contained	start=':\s-'	end='\ze:'	end='\ze}'	contains=shDeref,shDerefSimple	nextgroup=shDerefLen,shDeref,shDerefSimple
+ syn match  shDerefLen	contained	":[^}]\+"	contains=shDeref,shDerefSimple
 
  " bash : ${parameter//pattern/string}
  " bash : ${parameter//pattern}
@@ -636,6 +637,8 @@
   hi def link bashSpecialVariables	shShellVariables
   hi def link bashStatement		shStatement
   hi def link shCharClass		shSpecial
+  hi def link shDerefOff		shDerefOp
+  hi def link shDerefLen		shDerefOff
 endif
 if exists("b:is_kornshell")
   hi def link kshSpecialVariables	shShellVariables