Cf. #614: Support for bibentry as cite syntax

after/syntax/tex.vim

@@ -66,7 +66,8 @@ highlight link texHyperref     texRefZone
 if get(g:, 'tex_fast', 'r') =~# 'r'
 
   for s:pattern in [
-        \ 'cite[pt]\*?',
+        \ 'bibentry',
+        \ 'cite[pt]?\*?',
         \ 'citeal[tp]\*?',
         \ 'cite(num|text|url)',
         \ '[Cc]ite%(title|author|year(par)?|date)\*?',

test/features/syntax/test-syntax.tex

@@ -88,6 +88,7 @@ const double pi = 3.1415926535
 \hyperref[asdasd]{asd}
 
 % Cite commands
+\cite{}
 \citet*{}
 \citealt{}
 \citealt*{}
@@ -99,6 +100,7 @@ const double pi = 3.1415926535
 \citeauthor*{}
 \citeyear{}
 \citeyearpar{}
+\bibentry{}
 
 \end{document}