Add jsx support, closes #56

after/syntax/jsx.vim

@@ -0,0 +1,43 @@
+"""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""
+" Vim syntax file
+"
+" Language: JSX (JavaScript)
+" Maintainer: Max Wang <mxawng@gmail.com>
+" Depends: pangloss/vim-javascript
+"
+" CREDITS: Inspired by Facebook.
+"
+"""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""
+
+" Do nothing if we don't find the @jsx pragma (and we care).
+exec 'source '.fnameescape(expand('<sfile>:p:h:h').'/jsx-config.vim')
+if g:jsx_pragma_required && !b:jsx_pragma_found | finish | endif
+
+" Do nothing if we don't have the .jsx extension (and we care).
+if g:jsx_ext_required && !exists('b:jsx_ext_found') | finish | endif
+
+" Prologue; load in XML syntax.
+if exists('b:current_syntax')
+  let s:current_syntax=b:current_syntax
+  unlet b:current_syntax
+endif
+syn include @XMLSyntax syntax/xml.vim
+if exists('s:current_syntax')
+  let b:current_syntax=s:current_syntax
+endif
+
+" Highlight JSX regions as XML; recursively match.
+syn region jsxRegion contains=@XMLSyntax,jsxRegion,jsBlock,javascriptBlock
+  \ start=+<\@<!<\z([a-zA-Z][a-zA-Z0-9:\-.]*\)+
+  \ skip=+<!--\_.\{-}-->+
+  \ end=+</\z1\_\s\{-}>+
+  \ end=+/>+
+  \ keepend
+  \ extend
+
+" JSX attributes should color as JS.  Note the trivial end pattern; we let
+" jsBlock take care of ending the region.
+syn region xmlString contained start=+{+ end=++ contains=jsBlock,javascriptBlock
+
+" Add jsxRegion to the lowest-level JS syntax cluster.
+syn cluster jsExpression add=jsxRegion