More gracious terminal width discovery

bin/app_cfg.rb

@@ -52,11 +52,18 @@ def initialize()
  # Default to `exit(1)` upon failing test cases
  :tests_graceful_fail => false,
 
- # Get terminal width in columns
- :terminal_width => (IO.console.winsize)[1],
+ # Set terminal width (in columns) to a default
+ :terminal_width => 120,
  }
 
  set_paths( ceedling_root_path )
+
+ # Try to query terminal width (not always available on all platforms)
+ begin
+ @app_cfg[:terminal_width] = (IO.console.winsize)[1]
+ rescue
+ # Do nothing; allow default value already set to stand
+ end
  end 
 
  def set_project_config(config)