The problem is with dvtm, specifically older versions. dvtm 0.5.2 definitely has this problem and I know that the HEAD of the git repository does not. According to the git log it was fixed by you:
commit 163a07d5fb99f2b187e1da0f66084f14d6459626 Author: Marc Andre Tanner <m...@brain-dump.org> Date: Fri Dec 17 21:01:33 2010 +0100 madtty: recognize set/clear graphmode with ESC(0, ESC(B Based on a patch from Ross Mohn. Signed-off-by: Marc Andre Tanner <m...@brain-dump.org> On Thu, Dec 30, 2010 at 11:06 AM, Aurélien Aptel <aurelien.ap...@gmail.com> wrote: > On Thu, Dec 30, 2010 at 1:50 AM, Ross Mohn <rpm...@waxandwane.org> wrote: >> Thanks for that! Yes, it also works in screen and tmux, but not dvtm. I'll >> slog through some tmux code and see about adding it to dvtm. > > Sorry if I wasn't clear, but the line drawing characters are correctly > displayed while using dvtm *inside* of st. Bottom line, there must be > something wrong with your configuration. > >