Let’s say, you have a Bash alias like:
alias rxvt="urxvt"
which works fine.
However:
alias rxvt="urxvt -fg "#111111' -bg '#111111''
won’t work, and neither will:
alias rxvt="urxvt -fg \"#111111\' -bg \'#111111\''
So how do you end up matching up opening and closing quotes inside a string once you have escaped quotes?
alias rxvt="urxvt -fg"\''#111111'\'' -bg '\''#111111'\''
seems ungainly although it would represent the same string if you’re allowed to concatenate them like that.