[ruby/irb] Ignore invalid 3 colons in completion

https://github.com/ruby/irb/commit/5e29e3e39c

2 files changed, 6 insertions, 1 deletions

diff --git a/lib/irb/completion.rb b/lib/irb/completion.rb
index 812ebb09e7..fe2962e780 100644
--- a/lib/irb/completion.rb
+++ b/lib/irb/completion.rb
@@ -286,7 +286,7 @@ module IRB
           all_gvars.grep(Regexp.new(Regexp.quote(gvar)))
         end
 
-      when /^([^."].*)(\.|::)([^.]*)$/
+      when /^([^.:"].*)(\.|::)([^.]*)$/
         # variable.func or func.func
         receiver = $1
         sep = $2
diff --git a/test/irb/test_completion.rb b/test/irb/test_completion.rb
index 1ae1b7a0b9..f00eda0058 100644
--- a/test/irb/test_completion.rb
+++ b/test/irb/test_completion.rb
@@ -32,6 +32,11 @@ module TestIRB
       assert_empty(IRB::InputCompletor.retrieve_completion_data(":irb_unknown_symbol_abcdefg", bind: binding))
     end
 
+    def test_complete_invalid_three_colons
+      assert_empty(IRB::InputCompletor.retrieve_completion_data(":::A", bind: binding))
+      assert_empty(IRB::InputCompletor.retrieve_completion_data(":::", bind: binding))
+    end
+
     def test_complete_symbol_failure
       assert_nil(IRB::InputCompletor::PerfectMatchedProc.(":aiueo", bind: binding))
     end