On 2017-11-11 04:26, Tom H wrote:

> So it should be:
> 
> PS1="\[\e[0m\][\u@\h:\l \w]\$ "

Maybe. I got silly and experimented.

PS1="\[\e[1m\][\u@\h:\l \w]\$ "
and
PS1="\e[1m[\u@\h:\l \w]\$ "
and
PS1="\e[1m[\\u@\\h:\\l \\w]\$ "

all produce the same thing, which leaves the issue even more confused than when 
we started.

{^_^}