From f178c32dd1f7dd6172e3088a49ebd6d36cd8ce0e Mon Sep 17 00:00:00 2001
From: Dmitry Gutov <dgutov@yandex.ru>
Date: Tue, 13 Nov 2012 07:07:09 +0400
Subject: [PATCH] * lisp/progmodes/ruby-mode.el (ruby-font-lock-keywords):
 Never font-lock the beginning of singleton class as heredoc.

* test/automated/ruby-mode-tests.el (ruby-heredoc-font-lock)
(ruby-singleton-class-no-heredoc-font-lock): New tests.
---
 lisp/ChangeLog                    | 5 +++++
 lisp/progmodes/ruby-mode.el       | 3 ++-
 test/ChangeLog                    | 5 +++++
 test/automated/ruby-mode-tests.el | 8 ++++++++
 4 files changed, 20 insertions(+), 1 deletion(-)

diff --git a/lisp/ChangeLog b/lisp/ChangeLog
index 92f3343db6..d04c42da4f 100644
--- a/lisp/ChangeLog
+++ b/lisp/ChangeLog
@@ -14,6 +14,11 @@
 	(advice-add): Use them.
 	(advice-member-p): Correctly handle macros.
 
+2012-11-13  Dmitry Gutov  <dgutov@yandex.ru>
+
+	* progmodes/ruby-mode.el (ruby-font-lock-keywords): Never
+	font-lock the beginning of singleton class as heredoc.
+
 2012-11-13  Stefan Monnier  <monnier@iro.umontreal.ca>
 
 	* emacs-lisp/gv.el (gv-define-simple-setter): One more fix (bug#12871).
diff --git a/lisp/progmodes/ruby-mode.el b/lisp/progmodes/ruby-mode.el
index 67f25eda28..9d2c6fa51f 100644
--- a/lisp/progmodes/ruby-mode.el
+++ b/lisp/progmodes/ruby-mode.el
@@ -1551,7 +1551,8 @@ See `font-lock-syntax-table'.")
           ruby-keyword-end-re)
          2)
    ;; here-doc beginnings
-   (list ruby-here-doc-beg-re 0 'font-lock-string-face)
+   `(,ruby-here-doc-beg-re 0 (unless (ruby-singleton-class-p (match-beginning 0))
+                               'font-lock-string-face))
    ;; variables
    '("\\(^\\|[^_:.@$]\\|\\.\\.\\)\\b\\(nil\\|self\\|true\\|false\\)\\>"
      2 font-lock-variable-name-face)
diff --git a/test/ChangeLog b/test/ChangeLog
index 4a9d215aa2..ad136117c1 100644
--- a/test/ChangeLog
+++ b/test/ChangeLog
@@ -1,3 +1,8 @@
+2012-11-13  Dmitry Gutov  <dgutov@yandex.ru>
+
+	* automated/ruby-mode-tests.el (ruby-heredoc-font-lock)
+	(ruby-singleton-class-no-heredoc-font-lock): New tests.
+
 2012-11-12  Stefan Monnier  <monnier@iro.umontreal.ca>
 
 	* automated/advice-tests.el: New tests.
diff --git a/test/automated/ruby-mode-tests.el b/test/automated/ruby-mode-tests.el
index 8da0041e9a..741692a07f 100644
--- a/test/automated/ruby-mode-tests.el
+++ b/test/automated/ruby-mode-tests.el
@@ -76,6 +76,14 @@ VALUES-PLIST is a list with alternating index and value elements."
   (ruby-assert-state "foo <<asd\n" 3 ?\n)
   (ruby-assert-state "class <<asd\n" 3 nil))
 
+(ert-deftest ruby-heredoc-font-lock ()
+  (let ((s "foo <<eos.gsub('^ *', '')"))
+    (ruby-assert-face s 9 'font-lock-string-face)
+    (ruby-assert-face s 10 nil)))
+
+(ert-deftest ruby-singleton-class-no-heredoc-font-lock ()
+  (ruby-assert-face "class<<a" 8 nil))
+
 (ert-deftest ruby-deep-indent ()
   (let ((ruby-deep-arglist nil)
         (ruby-deep-indent-paren '(?\( ?\{ ?\[ ?\] t)))
-- 
2.20.1