citrus.vim in citrus-1.7.0

- old
+ new

@@ -14,10 +14,10 @@
 syn case match
 
 syn match ctDoubleColon "::" contained
 syn match ctConstant "\u\w*" contained
 syn match ctModule "\(\(::\)\?\u\w*\)\+" contains=ctDoubleColon,ctConstant contained
-syn match ctVariable "[a-zA-Z_-]\+" contained
+syn match ctVariable "\a[a-zA-Z0-9_-]*" contained
 
 " Comments
 syn match ctComment "#.*" contains=@Spell
 
 " Keywords