Somehow my bash rc scripts (which are hundreds of lines long and non-trivial to review) are breaking !! and I'm not sure how to quickly debug it. I know this because when I run bash with no user config it works fine. How can I debug this quickly, or does anything come to mind? I'm not running this in a script -- I'm typing from the command line.
$ !!
!!: command not found
$ echo $-
himBs
$ bash --version
GNU bash, version 4.4.20(1)-release (x86_64-pc-linux-gnu)
$ shopt
autocd off
cdable_vars off
cdspell off
checkhash off
checkjobs off
checkwinsize off
cmdhist on
compat31 off
compat32 off
compat40 off
compat41 off
compat42 off
compat43 off
complete_fullquote on
direxpand off
dirspell off
dotglob off
execfail off
expand_aliases on
extdebug off
extglob on
extquote on
failglob off
force_fignore on
globasciiranges off
globstar off
gnu_errfmt off
histappend off
histreedit off
histverify off
hostcomplete off
huponexit off
inherit_errexit off
interactive_comments on
lastpipe off
lithist off
login_shell on
mailwarn off
no_empty_cmd_completion off
nocaseglob off
nocasematch off
nullglob off
progcomp on
promptvars on
restricted_shell off
shift_verbose off
sourcepath on
xpg_echo off
