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Re: Displaying 8-bit characters

On Sat, Nov 27, 1999 at 04:35:46PM +0100, Wichert Akkerman wrote:
> Previously Michael Sobolev wrote:
> > I'm trying to use my [incomplete :)] translation with dselect.  At the moment,
> > the only displayable phrases are in main menu (access, update, etc).  Everything
> > Russian on select screen does not look Russian at all: all words get converted
> > to pseudographics etc.  This was the problem with 1.4.1.*, it's the problem with
> > 1.6.  Please advise what to do.
> We need to figure out why ncurses strips the 8th bit on anything that is
> bold..

After playing abit with /usr/doc/libncurses4-dev/examples/ncurses.c I found
that at least on of examples "exercise pad features" isn't 8-bit clean while
for example "character attribute test" is ok. Most important difference was
waddch function - I got proper display after changing it to waddnstr.

Next I went to /usr/doc/libncurses4-dev/ncurses-intro.html#attributes and

  There are two ways to make highlights. One is to logical-or the value of
  the highlights you want into the character argument of an addch() call, or
  any other output call that takes a chtype argument.

First place that I found in dselect source (I didn't analysed more) that is
responsible for displaying "--- any text ---" separators in "dselect select"
command gives me readable screen:

--- dpkg-1.6.1/dselect/pkgtop.cc        Sat Oct 30 15:09:59 1999
+++ dpkg-1.6.1.NEW/dselect/pkgtop.cc    Sun Nov 28 13:32:13 1999
@@ -242,7 +242,7 @@

     wattrset(listpad, selected ? selstatesel_attr : selstate_attr);
     p= buf;
-    while (i>0 && *p) { waddch(listpad, *p); p++; i--; }
+    while (i>0 && *p) { waddnstr(listpad, p,1); p++; i--; }
     wattrset(listpad, selected ? listsel_attr : list_attr);

     waddch(listpad,' ');


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