Add index entry "syntax highlighting" to the elisp manual

* doc/lispref/modes.texi (Font Lock Mode): Add an index entry for
"syntax highlighting".  (Bug#24827)

diff --git a/doc/lispref/modes.texi b/doc/lispref/modes.texi
index b52871ef70b6afe47f92b51cf3fc2b633f7562b1..62d28da200413d3aa594878dbd7a3628cf314ffa 100644 (file)
--- a/doc/lispref/modes.texi
+++ b/doc/lispref/modes.texi
@@ -2673,6 +2673,7 @@ Setting this variable makes it buffer-local in the current buffer.
 @node Font Lock Mode
 @section Font Lock Mode
 @cindex Font Lock mode
+@cindex syntax highlighting and coloring
 
   @dfn{Font Lock mode} is a buffer-local minor mode that automatically
 attaches @code{face} properties to certain parts of the buffer based on