Re: precmd, preexec, and supplied prompt themes

[Bart Schaefer <schaefer@xxxxxxxxxxxxxxxx>]

On Oct 31, 11:07am, Oliver Kiddle wrote:
} Subject: Re: precmd, preexec, and supplied prompt themes
}
} On 13 Oct, Bart wrote:
} > --- promptinit	1 Oct 2006 02:38:52 -0000	1.3
} >  
} > +  emulate -L zsh
} 
} This has broken the prompt_opts	feature of promptinit

I think that's a bug in the way those options are initialized, then,
or in "emulate".

Even with -R, options "describing the interactive environment" are
not supposed to be reset, and without -L "only those options likely
to cause portability problems in scripts and functions are altered."

Would someone explain how promptcr, promptsubst and promptpercent
"cause portability problems in scripts and functions"?