The bash intepreter itself has options, i.e.

Lines 22-23 of bash's man page:

OPTIONS  

All of the  single-character shell options documented in the description of the set builtin command can be used as options when the shell is invoked.   In addition, bash interprets the following options when it is invoked:  
-c ...  
-i ...  
-l ...  
-r ...  

I've used a few search patterns in bash man page like:

• /^\s*set
• /list

Is it possible to print a list of these settings that are applied to the current shell?