libncursesw5-dbg 6.0+20151024-2ubuntu2 (amd64 binary) in ubuntu xenial

 The ncurses library routines are a terminal-independent method of
 updating character screens with reasonable optimization.
 .
 This package contains special library versions of ncursesw suitable
 for debugging and profiling. Also included are detached debugging
 symbols for libncursesw5.
 .
 This package includes support for wide characters.