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"""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""
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" Vim syntax file
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"
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" Language: JSX (JavaScript)
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" Maintainer: Max Wang <mxawng@gmail.com>
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" Depends: pangloss/vim-javascript
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"
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" CREDITS: Inspired by Facebook.
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"
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"""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""
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" Prologue; load in XML syntax.
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if exists('b:current_syntax')
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let s:current_syntax=b:current_syntax
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unlet b:current_syntax
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endif
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syn include @XMLSyntax syntax/xml.vim
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if exists('s:current_syntax')
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let b:current_syntax=s:current_syntax
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endif
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" Officially, vim-jsx depends on the pangloss/vim-javascript syntax package
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" (and is tested against it exclusively). However, in practice, we make some
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" effort towards compatibility with other packages.
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"
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" These are the plugin-to-syntax-element correspondences:
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"
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" - pangloss/vim-javascript: jsBlock, jsExpression
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" - jelera/vim-javascript-syntax: javascriptBlock
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" - othree/yajs.vim: javascriptNoReserved
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" JSX attributes should color as JS. Note the trivial end pattern; we let
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" jsBlock take care of ending the region.
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syn region xmlString contained start=+{+ end=++ contains=jsBlock,javascriptBlock
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" JSX child blocks behave just like JSX attributes, except that (a) they are
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" syntactically distinct, and (b) they need the syn-extend argument, or else
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" nested XML end-tag patterns may end the outer jsxRegion.
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syn region jsxChild contained start=+{+ end=++ contains=jsBlock,javascriptBlock
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\ extend
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" Highlight JSX regions as XML; recursively match.
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"
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" Note that we prohibit JSX tags from having a < or word character immediately
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" preceding it, to avoid conflicts with, respectively, the left shift operator
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" and generic Flow type annotations (http://flowtype.org/).
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syn region jsxRegion
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\ contains=@Spell,@XMLSyntax,jsxRegion,jsxChild,jsBlock,javascriptBlock
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\ start=+\%(<\|\w\)\@<!<\z([a-zA-Z][a-zA-Z0-9:\-.]*\>[:,]\@!\)\([^>]*>(\)\@!+
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\ skip=+<!--\_.\{-}-->+
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\ end=+</\z1\_\s\{-}>+
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\ end=+/>+
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\ keepend
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\ extend
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" Add jsxRegion to the lowest-level JS syntax cluster.
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syn cluster jsExpression add=jsxRegion
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" Allow jsxRegion to contain reserved words.
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syn cluster javascriptNoReserved add=jsxRegion
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