Andries Brouwer wrote: > There are many types of TTY. A termcap/terminfo entry would tell you > what escape sequence causes the cursor to move left one position. > (In termcap the boolean bs will tell you whether it is 010, backspace.) > > Such cursor movement is entirely independent of the text present > on the screen.
However, starting to write text in the middle of a double-width character does not really work. For example, xterm and KDE's console both set TERM=xterm. For both, the terminfo entry (shown by "infocmp xterm") has cub1=^H, so indeed \x08 should move the cursor left by one column. In both, \x08 \x08 goes back over a Japanese double-width character: $ echo -n 'ææè' ; printf '\x08\x08' ; echo xyz ææxyz But when only one \x08 is used, the results differ: In xterm, $ echo -n 'ææè' ; printf '\x08' ; echo xyz ææIxyz where the I is half of a Japanese character, and disappears when selected. In konsole, the same thing produces produces major screen garbage. Bruno _______________________________________________ Groff mailing list Groff@gnu.org http://lists.gnu.org/mailman/listinfo/groff
