On Sat, 25 Mar 2017 15:16:31 -0400, Chet Ramey wrote: > > On 3/24/17 11:57 PM, Torka Noda wrote: > > From what I understand, \[ and \] characters are only > > useful for the prompts, right? > > Yes, but one of the primary motivations for including the @P > modifier was requests to be able to use prompt expansions > when using `read -e -p'. In this case, you have to have the > escape sequences preserved. >
Oh, ok. > > > If so, then the parameter operator P should probably strip > > them. > > In general, you want the \[ and \] sequences expanded in all > cases where the result will eventually be fed to readline, > and stripped when it is not. It's not feasible for bash to > figure that out for itself, so you have to tell it. Since > those escape sequences get stripped when bash isn't going to > be doing line editing, you can put `set +o emacs +o vi' (or > whichever one is relevant for you) before expanding a string > using the @P modifier and get the results you want. > @p would strip \[ and \] characters, @P would not strip them? :)
