Suppressing the "Did you mean?" lines from exception message output

Suppressing the “Did you mean?” lines from exception message output.

When we enter one liners or other interactive code at the console, it can be helpful to have the “Did you mean?” lines output after the exception message. This feature is now on by default in Ruby 2.3+.

However, when you have code that outputs exception messages to $stderr all the “Did you mean?” lines will just double the “noise” (or more if there are multiple suggestions.)

Below, is an example of suppressing these “Did you mean?” suggestion lines.

The test scenario uses the API Issue #31 where any untrapped exception occurring in an #respond_to? overridden method in an observer object will (still as of SU2022) cause a BugSplat application crash.

So if you must override for testing or debugging, etc., be sure to trap exceptions in the overridden #respond_to? of your observer(s).

You could use a special truncation method in your object …

  def clean_message(err)
    err.message.split(">\n").first # removes "Did you mean?" line(s)

But it turns out that the did_you_mean gem adds an extra #original_message method to some of the Exception subclasses. (Ie, those that mix in the DidYouMean::Correctable module. The gem does this because it overrides the #message method.)

class ModelSpy < Sketchup::ModelObserver

  def self.attach

  def respond_to?(meth)
    # Mistyped puts() method name as Puts causes a NoMethodError ...
    Puts "SketchUp polled #{self.class} for an \##{meth.to_s} callback."
  rescue => err
    if err.respond_to?(:original_message)
      puts "\#<#{}: #{err.original_message}.>"
    else # did_you_mean gem is not loaded in pre2.3 Ruby
      puts "\#<#{}: #{err.message}.>"
    puts "Error occurred in #{}\##{__method__} when polling for an \##{meth.to_s} callback."


To test (in a SketchUp version running Ruby 2.3 or higher,) paste the above into the console, run ModelSpy.attach, and then move an instance or somehow edit the model.

Looking at the Ruby docs for Kernel#puts and Exception class I did not see any method or extra argument to suppress these “Did you mean?” lines.

The only way I found it (via a Google search) was the README for the did_you_mean gem.

The gem is automatically loaded for Ruby 2.3+ and the only way to switch it off is by a command line switch when Ruby is loaded.