ruby-syntax-propertize: Fix certain cases following ::

* lisp/progmodes/ruby-mode.el (ruby-syntax-propertize):
Make sure to backtrack if the "symbols with special characters"
rule is aborted because of preceding colon.

2 files changed, 3 insertions, 3 deletions

diff --git a/lisp/progmodes/ruby-mode.el b/lisp/progmodes/ruby-mode.el
index a8667acb9d5..e7f407b6367 100644
--- a/lisp/progmodes/ruby-mode.el
+++ b/lisp/progmodes/ruby-mode.el
@@ -1869,8 +1869,8 @@ It will be properly highlighted even when the call omits parens.")
       ;; Symbols with special characters.
       (":\\([-+~]@?\\|[/%&|^`]\\|\\*\\*?\\|<\\(<\\|=>?\\)?\\|>[>=]?\\|===?\\|=~\\|![~=]?\\|\\[\\]=?\\)"
        (1 (unless (or
-                   (eq (char-before (match-beginning 0)) ?:)
-                   (nth 8 (syntax-ppss (match-beginning 1))))
+                   (nth 8 (syntax-ppss (match-beginning 1)))
+                   (eq (char-before (match-beginning 0)) ?:))
             (goto-char (match-end 0))
             (string-to-syntax "_"))))
       ;; Symbols ending with '=' (bug#42846).
diff --git a/test/lisp/progmodes/ruby-mode-resources/ruby.rb b/test/lisp/progmodes/ruby-mode-resources/ruby.rb
index 434237cf638..8c698e4fac8 100644
--- a/test/lisp/progmodes/ruby-mode-resources/ruby.rb
+++ b/test/lisp/progmodes/ruby-mode-resources/ruby.rb
@@ -108,7 +108,7 @@ foo(                            # ruby-deep-indent-disabled
 # Multiline regexp.
 /bars
  tees # toots
- nfoos/
+ nfoos::/
 
 def test1(arg)
   puts "hello"