RE: Display backslash-n in dialog?

[Thomas Dickey]

On Wed, 27 Jul 2011, Moray Henderson wrote:

> Thomas Dickey wrote:
> > > From the man dialog Version: 1.1-20100428 from Fedora 14.
> > >
> > > man dialog section on color
> > >
> > > --colors
> > >  Interpret embedded "\Z" sequences in the dialog text by the fol-
> > >   lowing character, which tells dialog  to  set  colors  or  video
> > >   attributes: 0 through 7 are the ANSI used in curses: black, red,
> > >   green, yellow, blue, magenta, cyan and white respectively.  Bold
> > >    is  set  by  'b', reset by 'B'.  Reverse is set by 'r', reset by
> > >    'R'.  Underline is set by 'u', reset by 'U'.  The  settings  are
> > >    cumulative,  e.g.,  "\Zb\Z1" makes the following text bold (per-
> > >    haps bright) red.  Restore normal settings with "\Zn".
> > >
> > > Without the --colors don't know how \Z would be handled, or what
> > > happens with what appears after the \Z
> >
> > yes (without --colors, \Z has no special meaning).
>
> There may be a bug then.  I have tested this up to dialog Version
> 1.1-20100428 - Fedora 15 LiveCD booted to runlevel 3 with vim-common
> installed to provide xxd(1).  I captured hex dumps from the output of 2
> dialog commands:

perhaps - I'm reminded of a relatively recent bug-fix - though what I see 
in the changelog is for the case when --colors _is_ used.

>  dialog --msgbox "Hello\A world" 5 25 | xxd > 1
>  dialog --msgbox "Hello\Z world" 5 25 | xxd > 2

I'll add this to my to-do list, to see if I can reproduce it.

--
Thomas E. Dickey
http://invisible-island.net
ftp://invisible-island.net