bug#24830: [PATCH] Add an example for font-lock-remove-keywords.

[Hong Xu <hong@topbug.net>]

---
 doc/lispref/ChangeLog.1 |  4 ++++
 doc/lispref/modes.texi  | 10 ++++++++++
 2 files changed, 14 insertions(+)

diff --git a/doc/lispref/ChangeLog.1 b/doc/lispref/ChangeLog.1
index 610e7541e7de..34c7b5634359 100644
--- a/doc/lispref/ChangeLog.1
+++ b/doc/lispref/ChangeLog.1
@@ -1,3 +1,7 @@
+2016-10-30  Hong Xu  <hong@topbug.net>
+
+	* modes.texi (Customizing Keywords): Add an example for `font-lock-remove-keywords'.
+
 2015-03-29  Glenn Morris  <rgm@gnu.org>
 
 	* objects.texi (Equality Predicates): Fix typo in example.
diff --git a/doc/lispref/modes.texi b/doc/lispref/modes.texi
index 32baa27147bf..04d1f13c60d2 100644
--- a/doc/lispref/modes.texi
+++ b/doc/lispref/modes.texi
@@ -2930,6 +2930,16 @@ Customizing Keywords
    ("\\<\\(and\\|or\\|not\\)\\>" . font-lock-keyword-face)))
 @end smallexample
 
+To remove the fontification of the word @samp{FIXME} above, use the
+following code.  Note that the list in the argument @var{keywords}
+must be exactly the same as the one added by
+@code{font-lock-add-keywords}.
+
+@smallexample
+(font-lock-remove-keywords 'c-mode
+ '(("\\<\\(FIXME\\):" 1 font-lock-warning-face prepend)))
+@end smallexample
+
 @noindent
 This example affects only C mode proper.  To add the same patterns to C
 mode @emph{and} all modes derived from it, do this instead:
-- 
2.1.4