Hi, Sorry the info didn’t help. I’ve never used the alternate character set. I recalled seeing something years ago about double width or double height characters that suggested use of an alt char set.
Unfortunately I don’t recall whether it concerned VT100 or a HP terminal. Info on URWID indicates that it supports ncurses, but cannot verify if it uses alt char set. However, the following might be more relevant: NCURSES Extended Characters Quick Reference Chart … <http://www.google.com/url?sa=t&rct=j&q=&esrc=s&source=web&cd=1&ved=0CB8QFjAA&url=http%3A%2F%2Fmelvilletheatre.com%2Farticles%2Fncurses-extended-characters%2Findex.html&ei=SXQqVciHMriRsQTw_oHYBA&usg=AFQjCNFRj32IUwb_rAIcLxshKAVKvKo5fA&sig2=9WriNH4ClmWzupm6s2gR2w&bvm=bv.90491159,d.cWc> It includes c code that uses curses to display alt char set. Dick > On Apr 12, 2015, at 8:49 AM, anatoly techtonik <techto...@gmail.com> wrote: > > On Sun, Apr 12, 2015 at 2:06 PM, Richard S. Gordon <rigo...@comcast.net > <mailto:rigo...@comcast.net>> wrote: > For a description of the standard and alternate character sets you might > checkout: > > http://en.wikipedia.org/wiki/VT100 <http://en.wikipedia.org/wiki/VT100> > No info. > http://vt100.net/docs/vt100-tm/ek-vt100-tm-002.pdf > <http://vt100.net/docs/vt100-tm/ek-vt100-tm-002.pdf> > Looks like search doesn't work in this PDF. Couldn't find "alternate" inside. > http://www.in-ulm.de/~mascheck/various/alternate_charset > <http://www.in-ulm.de/~mascheck/various/alternate_charset> > Seen that. It assumes a lot of knowledge about terminals and their problems, > and I have no idea what the problem domain of this text is about. > > You might also get more insight by directly contacting Thomas E. Dickey. He > has maintained ncurses since 1995-1996. His record keeping is highly detailed. > > I just need a simple answer when it is used, why it is needed and how it > looks like compared to non-alternate charset.