diff --git a/runtime/syntax/crontab.vim b/runtime/syntax/crontab.vim
index 36d75c4..fd1c300 100644
--- a/runtime/syntax/crontab.vim
+++ b/runtime/syntax/crontab.vim
@@ -5,7 +5,7 @@
 " License: This file can be redistribued and/or modified under the same terms
 "   as Vim itself.
 " Filenames: /tmp/crontab.* used by "crontab -e"
-" Last Change: 2012-05-16
+" Last Change: 2015-01-20
 "
 " crontab line format:
 " Minutes   Hours   Days   Months   Days_of_Week   Commands # comments
@@ -13,11 +13,17 @@
 " For version 5.x: Clear all syntax items
 " For version 6.x: Quit when a syntax file was already loaded
 if version < 600
-  syntax clear
+	syntax clear
 elseif exists("b:current_syntax")
-  finish
+	finish
 endif
 
+syntax match crontabNick "^\s*@\(reboot\|yearly\|annually\|monthly\|weekly\|daily\|midnight\|hourly\)\>" nextgroup=crontabCmd skipwhite
+
+syntax match crontabVar "^\s*\k\w*\s*="me=e-1
+
+syntax case ignore
+
 syntax match crontabMin "^\s*[-0-9/,.*]\+" nextgroup=crontabHr skipwhite
 syntax match crontabHr "\s[-0-9/,.*]\+" nextgroup=crontabDay skipwhite contained
 syntax match crontabDay "\s[-0-9/,.*]\+" nextgroup=crontabMnth skipwhite contained
@@ -32,45 +38,41 @@
 syntax match crontabCmnt "^\s*#.*" contains=@Spell
 syntax match crontabPercent "[^\\]%.*"lc=1 contained
 
-syntax match crontabNick "^\s*@\(reboot\|yearly\|annually\|monthly\|weekly\|daily\|midnight\|hourly\)\>" nextgroup=crontabCmd skipwhite
-
-syntax match crontabVar "^\s*\k\w*\s*="me=e-1
-
 " Define the default highlighting.
 " For version 5.7 and earlier: only when not done already
 " For version 5.8 and later: only when an item doesn't have highlighting yet
 if version >= 508 || !exists("did_crontab_syn_inits")
-  if version < 508
-    let did_crontab_syn_inits = 1
-    command -nargs=+ HiLink hi link <args>
-  else
-    command -nargs=+ HiLink hi def link <args>
-  endif
+	if version < 508
+		let did_crontab_syn_inits = 1
+		command -nargs=+ HiLink hi link <args>
+	else
+		command -nargs=+ HiLink hi def link <args>
+	endif
 
-  HiLink crontabMin		Number
-  HiLink crontabHr		PreProc
-  HiLink crontabDay		Type
+	HiLink crontabMin		Number
+	HiLink crontabHr		PreProc
+	HiLink crontabDay		Type
 
-  HiLink crontabMnth		Number
-  HiLink crontabMnth12		Number
-  HiLink crontabMnthS		Number
-  HiLink crontabMnthN		Number
+	HiLink crontabMnth		Number
+	HiLink crontabMnth12		Number
+	HiLink crontabMnthS		Number
+	HiLink crontabMnthN		Number
 
-  HiLink crontabDow		PreProc
-  HiLink crontabDow7		PreProc
-  HiLink crontabDowS		PreProc
-  HiLink crontabDowN		PreProc
+	HiLink crontabDow		PreProc
+	HiLink crontabDow7		PreProc
+	HiLink crontabDowS		PreProc
+	HiLink crontabDowN		PreProc
 
-  HiLink crontabNick		Special
-  HiLink crontabVar		Identifier
-  HiLink crontabPercent		Special
+	HiLink crontabNick		Special
+	HiLink crontabVar		Identifier
+	HiLink crontabPercent		Special
 
 " comment out next line for to suppress unix commands coloring.
-  HiLink crontabCmd		Statement
+	HiLink crontabCmd		Statement
 
-  HiLink crontabCmnt		Comment
+	HiLink crontabCmnt		Comment
 
-  delcommand HiLink
+	delcommand HiLink
 endif
 
 let b:current_syntax = "crontab"