This was caused by character set incompatibility between message and map
windows. Apparently, Nethack is using IBM character set (CP 437) but fonts
were create for Windows ANSI codepage. I fixed most of it by changing
character set of the fonts except for the Rogue level. I had to make changes
to src/drawing.c for Rogue level since most of Windows fonts are not capable
of displaying control characters (char. code<0x20)
And of course, disabling IBMGraphics option fixes it all.
> There has been some feedback from others on the development team
> around the tiles:
> "The Rogue Level should ideally be text-mode. It freaks out the
> tiled-version-only players when they first get there, but that
> makes it a good reminder of NetHack's roots."
>
> The other supported tiled ports work this way too. They display
> regular ASCII characters on the Rogue level, just like Rogue did.
-Adds Rogue-level ascii support.
-Also removes unicode support.
Some other build script tweaks as well.
M. Allison