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+" Vim syntax file
+" Language: DTD (Document Type Definition for XML)
+" Maintainer: Johannes Zellner <johannes@zellner.org>
+" Author and previous maintainer:
+" Daniel Amyot <damyot@site.uottawa.ca>
+" Last Change: Tue, 27 Apr 2004 14:54:59 CEST
+" Filenames: *.dtd
+"
+" REFERENCES:
+" http://www.w3.org/TR/html40/
+" http://www.w3.org/TR/NOTE-html-970421
+"
+" TODO:
+" - improve synchronizing.
+
+if version < 600
+ syntax clear
+ let __dtd_cpo_save__ = &cpo
+ set cpo&
+else
+ if exists("b:current_syntax")
+ finish
+ endif
+ let s:dtd_cpo_save = &cpo
+ set cpo&vim
+endif
+
+if !exists("dtd_ignore_case")
+ " I prefer having the case takes into consideration.
+ syn case match
+else
+ syn case ignore
+endif
+
+
+" the following line makes the opening <! and
+" closing > highlighted using 'dtdFunction'.
+"
+" PROVIDES: @dtdTagHook
+"
+syn region dtdTag matchgroup=dtdFunction
+ \ start=+<!+ end=+>+ matchgroup=NONE
+ \ contains=dtdTag,dtdTagName,dtdError,dtdComment,dtdString,dtdAttrType,dtdAttrDef,dtdEnum,dtdParamEntityInst,dtdParamEntityDecl,dtdCard,@dtdTagHook
+
+if !exists("dtd_no_tag_errors")
+ " mark everything as an error which starts with a <!
+ " and is not overridden later. If this is annoying,
+ " it can be switched off by setting the variable
+ " dtd_no_tag_errors.
+ syn region dtdError contained start=+<!+lc=2 end=+>+
+endif
+
+" if this is a html like comment hightlight also
+" the opening <! and the closing > as Comment.
+syn region dtdComment start=+<![ \t]*--+ end=+-->+ contains=dtdTodo
+
+
+" proper DTD comment
+syn region dtdComment contained start=+--+ end=+--+ contains=dtdTodo
+
+
+" Start tags (keywords). This is contained in dtdFunction.
+" Note that everything not contained here will be marked
+" as error.
+syn match dtdTagName contained +<!\(ATTLIST\|DOCTYPE\|ELEMENT\|ENTITY\|NOTATION\|SHORTREF\|USEMAP\|\[\)+lc=2,hs=s+2
+
+
+" wildcards and operators
+syn match dtdCard contained "|"
+syn match dtdCard contained ","
+" evenutally overridden by dtdEntity
+syn match dtdCard contained "&"
+syn match dtdCard contained "?"
+syn match dtdCard contained "\*"
+syn match dtdCard contained "+"
+
+" ...and finally, special cases.
+syn match dtdCard "ANY"
+syn match dtdCard "EMPTY"
+
+if !exists("dtd_no_param_entities")
+
+ " highlight parameter entity declarations
+ " and instances. Note that the closing `;'
+ " is optional.
+
+ " instances
+ syn region dtdParamEntityInst oneline matchgroup=dtdParamEntityPunct
+ \ start="%[-_a-zA-Z0-9.]\+"he=s+1,rs=s+1
+ \ skip=+[-_a-zA-Z0-9.]+
+ \ end=";\|\>"
+ \ matchgroup=NONE contains=dtdParamEntityPunct
+ syn match dtdParamEntityPunct contained "\."
+
+ " declarations
+ " syn region dtdParamEntityDecl oneline matchgroup=dtdParamEntityDPunct start=+<!ENTITY % +lc=8 skip=+[-_a-zA-Z0-9.]+ matchgroup=NONE end="\>" contains=dtdParamEntityDPunct
+ syn match dtdParamEntityDecl +<!ENTITY % [-_a-zA-Z0-9.]*+lc=8 contains=dtdParamEntityDPunct
+ syn match dtdParamEntityDPunct contained "%\|\."
+
+endif
+
+" &entities; compare with xml
+syn match dtdEntity "&[^; \t]*;" contains=dtdEntityPunct
+syn match dtdEntityPunct contained "[&.;]"
+
+" Strings are between quotes
+syn region dtdString start=+"+ skip=+\\\\\|\\"+ end=+"+ contains=dtdAttrDef,dtdAttrType,dtdEnum,dtdParamEntityInst,dtdEntity,dtdCard
+syn region dtdString start=+'+ skip=+\\\\\|\\'+ end=+'+ contains=dtdAttrDef,dtdAttrType,dtdEnum,dtdParamEntityInst,dtdEntity,dtdCard
+
+" Enumeration of elements or data between parenthesis
+"
+" PROVIDES: @dtdEnumHook
+"
+syn region dtdEnum matchgroup=dtdType start="(" end=")" matchgroup=NONE contains=dtdEnum,dtdParamEntityInst,dtdCard,@dtdEnumHook
+
+"Attribute types
+syn keyword dtdAttrType NMTOKEN ENTITIES NMTOKENS ID CDATA
+syn keyword dtdAttrType IDREF IDREFS
+" ENTITY has to treated special for not overriding <!ENTITY
+syn match dtdAttrType +[^!]\<ENTITY+
+
+"Attribute Definitions
+syn match dtdAttrDef "#REQUIRED"
+syn match dtdAttrDef "#IMPLIED"
+syn match dtdAttrDef "#FIXED"
+
+syn case match
+" define some common keywords to mark TODO
+" and important sections inside comments.
+syn keyword dtdTodo contained TODO FIXME XXX
+
+syn sync lines=250
+
+" 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_dtd_syn_inits")
+ if version < 508
+ let did_dtd_syn_inits = 1
+ command -nargs=+ HiLink hi link <args>
+ else
+ command -nargs=+ HiLink hi def link <args>
+ endif
+
+ " The default highlighting.
+ HiLink dtdFunction Function
+ HiLink dtdTag Normal
+ HiLink dtdType Type
+ HiLink dtdAttrType dtdType
+ HiLink dtdAttrDef dtdType
+ HiLink dtdConstant Constant
+ HiLink dtdString dtdConstant
+ HiLink dtdEnum dtdConstant
+ HiLink dtdCard dtdFunction
+
+ HiLink dtdEntity Statement
+ HiLink dtdEntityPunct dtdType
+ HiLink dtdParamEntityInst dtdConstant
+ HiLink dtdParamEntityPunct dtdType
+ HiLink dtdParamEntityDecl dtdType
+ HiLink dtdParamEntityDPunct dtdComment
+
+ HiLink dtdComment Comment
+ HiLink dtdTagName Statement
+ HiLink dtdError Error
+ HiLink dtdTodo Todo
+
+ delcommand HiLink
+endif
+
+if version < 600
+ let &cpo = __dtd_cpo_save__
+ unlet __dtd_cpo_save__
+else
+ let &cpo = s:dtd_cpo_save
+ unlet s:dtd_cpo_save
+endif
+
+let b:current_syntax = "dtd"
+
+" vim: ts=8