Support dot seperated namespace, like table.row

Author: yuezk

after/syntax/javascript.vim

@@ -45,7 +45,7 @@ syntax region jsxTag
 " s~~~~e
 " A big start regexp borrowed from https://git.io/vDyxc
 syntax region jsxRegion
-      \ start=+\(\((\|{\|}\|\[\|\]\|,\|&&\|||\|?\|:\|=\|=>\|\Wreturn\|^return\|\Wdefault\|^\|>\)\_s*\)\@<=<\z([_\$a-zA-Z][\$0-9a-zA-Z]*\)+
+      \ start=+\(\((\|{\|}\|\[\|\]\|,\|&&\|||\|?\|:\|=\|=>\|\Wreturn\|^return\|\Wdefault\|^\|>\)\_s*\)\@<=<\z([_\$a-zA-Z]\(\.\?[\$0-9a-zA-Z]\+\)*\)+
       \ skip=+<!--\_.\{-}-->+
       \ end=+</\z1>+
       \ end=+/>+

sample.js

@@ -36,6 +36,8 @@ class Hoge extends React.Component {
     if (foo <= 300) {
       return <div style={{margin:0}}>
         <div>hello, world</div>
+        <table.row hello="world">
+        </table.row>
       </div>
     }
   }