353 lines
8.6 KiB
VimL
353 lines
8.6 KiB
VimL
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if exists('g:polyglot_disabled') && index(g:polyglot_disabled, 'xml') != -1
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finish
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endif
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" Vim syntax file
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" Language: XML
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" Maintainer: Amadeus Demarzi http://github.com/amadeus
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" Author and previous maintainers:
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" Johannes Zellner <johannes@zellner.org>
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" Paul Siegmann <pauls@euronet.nl>
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" Last Change: 2017 May 17
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" License: MIT
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" Filenames: *.xml
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" CONFIGURATION:
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" syntax folding can be turned on by
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"
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" let g:xml_syntax_folding = 1
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"
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" before the syntax file gets loaded (e.g. in ~/.vimrc).
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" This might slow down syntax highlighting significantly,
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" especially for large files.
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"
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" CREDITS:
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" The original version was derived by Paul Siegmann from
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" Claudio Fleiner's html.vim.
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"
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" REFERENCES:
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" [1] http://www.w3.org/TR/2000/REC-xml-20001006
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" [2] http://www.w3.org/XML/1998/06/xmlspec-report-19980910.htm
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"
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" as <hirauchi@kiwi.ne.jp> pointed out according to reference [1]
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"
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" 2.3 Common Syntactic Constructs
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" [4] NameChar ::= Letter | Digit | '.' | '-' | '_' | ':' | CombiningChar | Extender
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" [5] Name ::= (Letter | '_' | ':') (NameChar)*
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"
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" NOTE:
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" 1) empty tag delimiters "/>" inside attribute values (strings)
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" confuse syntax highlighting.
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" 2) for large files, folding can be pretty slow, especially when
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" loading a file the first time and viewoptions contains 'folds'
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" so that folds of previous sessions are applied.
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" Don't use 'foldmethod=syntax' in this case.
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" Quit when a syntax file was already loaded
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if exists("b:current_syntax")
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finish
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endif
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let s:xml_cpo_save = &cpo
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set cpo&vim
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syn case match
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" mark illegal characters
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syn match xmlError "[<&]"
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" strings (inside tags) aka VALUES
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"
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" EXAMPLE:
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"
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" <tag foo.attribute = "value">
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" ^^^^^^^
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syn region xmlString contained start=+"+ end=+"+ contains=xmlEntity,@Spell display
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syn region xmlString contained start=+'+ end=+'+ contains=xmlEntity,@Spell display
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" punctuation (within attributes) e.g. <tag xml:foo.attribute ...>
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" ^ ^
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" syn match xmlAttribPunct +[-:._]+ contained display
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syn match xmlAttribPunct +[:.]+ contained display
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" no highlighting for xmlEqual (xmlEqual has no highlighting group)
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syn match xmlEqual +=+ display
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" attribute, everything before the '='
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"
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" PROVIDES: @xmlAttribHook
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"
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" EXAMPLE:
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"
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" <tag foo.attribute = "value">
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" ^^^^^^^^^^^^^
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"
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syn match xmlAttrib
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\ +[-'"<]\@1<!\<[a-zA-Z:_][-.0-9a-zA-Z:_]*\>\%(['"]\@!\|$\)+
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\ contained
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\ contains=xmlAttribPunct,@xmlAttribHook
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\ display
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" namespace spec
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"
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" PROVIDES: @xmlNamespaceHook
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"
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" EXAMPLE:
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"
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" <xsl:for-each select = "lola">
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" ^^^
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"
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if exists("g:xml_namespace_transparent")
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syn match xmlNamespace
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\ +\(<\|</\)\@2<=[^ /!?<>"':]\+[:]\@=+
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\ contained
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\ contains=@xmlNamespaceHook
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\ transparent
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\ display
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else
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syn match xmlNamespace
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\ +\(<\|</\)\@2<=[^ /!?<>"':]\+[:]\@=+
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\ contained
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\ contains=@xmlNamespaceHook
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\ display
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endif
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" tag name
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"
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" PROVIDES: @xmlTagHook
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"
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" EXAMPLE:
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"
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" <tag foo.attribute = "value">
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" ^^^
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"
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syn match xmlTagName
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\ +\%(<\|</\)\@2<=[^ /!?<>"']\++
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\ contained
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\ contains=xmlNamespace,xmlAttribPunct,@xmlTagHook
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\ display
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if exists('g:xml_syntax_folding')
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" start tag
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" use matchgroup=xmlTag to skip over the leading '<'
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"
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" PROVIDES: @xmlStartTagHook
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"
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" EXAMPLE:
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"
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" <tag id="whoops">
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" s^^^^^^^^^^^^^^^e
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"
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syn region xmlTag
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\ matchgroup=xmlTag start=+<[^ /!?<>"']\@=+
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\ matchgroup=xmlTag end=+>+
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\ contained
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\ contains=xmlError,xmlTagName,xmlAttrib,xmlEqual,xmlString,@xmlStartTagHook
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" highlight the end tag
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"
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" PROVIDES: @xmlTagHook
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" (should we provide a separate @xmlEndTagHook ?)
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"
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" EXAMPLE:
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"
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" </tag>
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" ^^^^^^
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"
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syn region xmlEndTag
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\ matchgroup=xmlTag start=+</[^ /!?<>"']\@=+
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\ matchgroup=xmlTag end=+>+
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\ contained
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\ contains=xmlTagName,xmlNamespace,xmlAttribPunct,@xmlTagHook
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" tag elements with syntax-folding.
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" NOTE: NO HIGHLIGHTING -- highlighting is done by contained elements
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"
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" PROVIDES: @xmlRegionHook
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"
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" EXAMPLE:
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"
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" <tag id="whoops">
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" <!-- comment -->
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" <another.tag></another.tag>
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" <empty.tag/>
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" some data
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" </tag>
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"
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syn region xmlRegion
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\ start=+<\z([^ /!?<>"']\+\)+
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\ skip=+<!--\_.\{-}-->+
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\ end=+</\z1\_\s\{-}>+
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\ end=+/>+
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\ fold
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\ contains=xmlTag,xmlEndTag,xmlCdata,xmlRegion,xmlComment,xmlEntity,xmlProcessing,@xmlRegionHook,@Spell
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\ keepend
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\ extend
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else
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" no syntax folding:
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" - contained attribute removed
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" - xmlRegion not defined
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"
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syn region xmlTag
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\ matchgroup=xmlTag start=+<[^ /!?<>"']\@=+
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\ matchgroup=xmlTag end=+>+
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\ contains=xmlError,xmlTagName,xmlAttrib,xmlEqual,xmlString,@xmlStartTagHook
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syn region xmlEndTag
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\ matchgroup=xmlTag start=+</[^ /!?<>"']\@=+
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\ matchgroup=xmlTag end=+>+
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\ contains=xmlTagName,xmlNamespace,xmlAttribPunct,@xmlTagHook
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endif
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" &entities; compare with dtd
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syn match xmlEntity "&[^; \t]*;" contains=xmlEntityPunct
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syn match xmlEntityPunct contained "[&.;]"
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if exists('g:xml_syntax_folding')
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" The real comments (this implements the comments as defined by xml,
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" but not all xml pages actually conform to it. Errors are flagged.
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syn region xmlComment
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\ start=+<!+
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\ end=+>+
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\ contains=xmlCommentStart,xmlCommentError
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\ extend
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\ fold
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else
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" no syntax folding:
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" - fold attribute removed
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"
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syn region xmlComment
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\ start=+<!+
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\ end=+>+
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\ contains=xmlCommentStart,xmlCommentError
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\ extend
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endif
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syn match xmlCommentStart contained "<!" nextgroup=xmlCommentPart
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syn keyword xmlTodo contained TODO FIXME XXX
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syn match xmlCommentError contained "[^><!]"
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syn region xmlCommentPart
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\ start=+--+
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\ end=+--+
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\ contained
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\ contains=xmlTodo,@xmlCommentHook,@Spell
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" CData sections
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"
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" PROVIDES: @xmlCdataHook
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"
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syn region xmlCdata
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\ start=+<!\[CDATA\[+
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\ end=+]]>+
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\ contains=xmlCdataStart,xmlCdataEnd,@xmlCdataHook,@Spell
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\ keepend
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\ extend
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" using the following line instead leads to corrupt folding at CDATA regions
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" syn match xmlCdata +<!\[CDATA\[\_.\{-}]]>+ contains=xmlCdataStart,xmlCdataEnd,@xmlCdataHook
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syn match xmlCdataStart +<!\[CDATA\[+ contained contains=xmlCdataCdata
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syn keyword xmlCdataCdata CDATA contained
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syn match xmlCdataEnd +]]>+ contained
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" Processing instructions
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" This allows "?>" inside strings -- good idea?
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syn region xmlProcessing matchgroup=xmlProcessingDelim start="<?" end="?>" contains=xmlAttrib,xmlEqual,xmlString
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if exists('g:xml_syntax_folding')
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" DTD -- we use dtd.vim here
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syn region xmlDocType matchgroup=xmlDocTypeDecl
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\ start="<!DOCTYPE"he=s+2,rs=s+2 end=">"
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\ fold
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\ contains=xmlDocTypeKeyword,xmlInlineDTD,xmlString
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else
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" no syntax folding:
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" - fold attribute removed
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"
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syn region xmlDocType matchgroup=xmlDocTypeDecl
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\ start="<!DOCTYPE"he=s+2,rs=s+2 end=">"
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\ contains=xmlDocTypeKeyword,xmlInlineDTD,xmlString
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endif
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syn keyword xmlDocTypeKeyword contained DOCTYPE PUBLIC SYSTEM
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syn region xmlInlineDTD contained matchgroup=xmlDocTypeDecl start="\[" end="]" contains=@xmlDTD
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syn include @xmlDTD syntax/dtd.vim
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unlet b:current_syntax
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" synchronizing
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" TODO !!! to be improved !!!
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syn sync match xmlSyncDT grouphere xmlDocType +\_.\(<!DOCTYPE\)\@=+
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" syn sync match xmlSyncDT groupthere NONE +]>+
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if exists('g:xml_syntax_folding')
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syn sync match xmlSync grouphere xmlRegion +\_.\(<[^ /!?<>"']\+\)\@=+
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" syn sync match xmlSync grouphere xmlRegion "<[^ /!?<>"']*>"
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syn sync match xmlSync groupthere xmlRegion +</[^ /!?<>"']\+>+
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endif
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syn sync minlines=100
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" The default highlighting.
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hi def link xmlTodo Todo
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hi def link xmlTag Function
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hi def link xmlTagName Function
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hi def link xmlEndTag Identifier
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if !exists("g:xml_namespace_transparent")
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hi def link xmlNamespace Tag
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endif
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hi def link xmlEntity Statement
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hi def link xmlEntityPunct Type
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hi def link xmlAttribPunct Comment
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hi def link xmlAttrib Type
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hi def link xmlString String
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hi def link xmlComment Comment
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hi def link xmlCommentStart xmlComment
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hi def link xmlCommentPart Comment
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hi def link xmlCommentError Error
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hi def link xmlError Error
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hi def link xmlProcessingDelim Comment
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hi def link xmlProcessing Type
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hi def link xmlCdata String
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hi def link xmlCdataCdata Statement
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hi def link xmlCdataStart Type
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hi def link xmlCdataEnd Type
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hi def link xmlDocTypeDecl Function
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hi def link xmlDocTypeKeyword Statement
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hi def link xmlInlineDTD Function
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let b:current_syntax = "xml"
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let &cpo = s:xml_cpo_save
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unlet s:xml_cpo_save
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" vim: ts=8
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