diff options
Diffstat (limited to 'screen-write.c')
| -rw-r--r-- | screen-write.c | 20 |
1 files changed, 20 insertions, 0 deletions
diff --git a/screen-write.c b/screen-write.c index 6b6aa400..2ce98dee 100644 --- a/screen-write.c +++ b/screen-write.c @@ -513,6 +513,25 @@ screen_write_cursorleft(struct screen_write_ctx *ctx, u_int nx) s->cx -= nx; } +/* Backspace; cursor left unless at start of wrapped line when can move up. */ +void +screen_write_backspace(struct screen_write_ctx *ctx) +{ + struct screen *s = ctx->s; + struct grid_line *gl; + + if (s->cx == 0) { + if (s->cy == 0) + return; + gl = &s->grid->linedata[s->grid->hsize + s->cy - 1]; + if (gl->flags & GRID_LINE_WRAPPED) { + s->cy--; + s->cx = screen_size_x(s) - 1; + } + } else + s->cx--; +} + /* VT100 alignment test. */ void screen_write_alignmenttest(struct screen_write_ctx *ctx) @@ -536,6 +555,7 @@ screen_write_alignmenttest(struct screen_write_ctx *ctx) s->cy = 0; s->rupper = 0; + s->rlower = screen_size_y(s) - 1; tty_write(tty_cmd_alignmenttest, &ttyctx); |