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Sync OpenBSD patchset 853:

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When clearing the entire screen, clear lines that are used into the
history like xterm does. Requested ages ago by someone I've forgotten.
This commit is contained in:
Tiago Cunha
2011-02-15 15:10:47 +00:00
parent 4e4568cade
commit 2ab568fa88
3 changed files with 43 additions and 7 deletions
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26
grid-view.c
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@ -1,4 +1,4 @@
/* $Id: grid-view.c,v 1.20 2009-12-04 22:14:47 tcunha Exp $ */
/* $Id: grid-view.c,v 1.21 2011-02-15 15:10:47 tcunha Exp $ */
/*
* Copyright (c) 2008 Nicholas Marriott <nicm@users.sourceforge.net>
@ -74,6 +74,30 @@ grid_view_set_utf8(
grid_set_utf8(gd, grid_view_x(gd, px), grid_view_y(gd, py), gu);
}
/* Clear into history. */
void
grid_view_clear_history(struct grid *gd)
{
struct grid_line *gl;
u_int yy, last;
GRID_DEBUG(gd, "");
/* Find the last used line. */
last = 0;
for (yy = 0; yy < gd->sy; yy++) {
gl = &gd->linedata[grid_view_y(gd, yy)];
if (gl->cellsize != 0 || gl->utf8size != 0)
last = yy + 1;
}
if (last == 0)
return;
/* Scroll the lines into the history. */
for (yy = 0; yy < last; yy++)
grid_scroll_history(gd);
}
/* Clear area. */
void
grid_view_clear(struct grid *gd, u_int px, u_int py, u_int nx, u_int ny)