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Just use default behaviour on tabstops when using too many columns.

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It seems I didn't fix this issue before committing teken to the tree. My
initial idea was to somehow add an error mechanism to instruct the video
driver author to increase T_NUMCOL when using very big terminals. It
turns out we have platforms where we have gigantic consoles on systems
like the Apple PowerMac G5, which means we crash there right now.

Just ignore tabstops placed beyond column 160. Just force tabs to be
placed on each 8 columns.

Reported by:	nwhitehorn
This commit is contained in:
Ed Schouten 2009-03-20 14:31:08 +00:00
parent bc3977f122
commit 3e1720f5e0
2 changed files with 6 additions and 5 deletions
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2
sys/dev/syscons/teken/teken.c
View File

@ -361,8 +361,6 @@ void
teken_set_winsize(teken_t *t, const teken_pos_t *p)
{
teken_assert(p->tp_col <= T_NUMCOL);
t->t_winsize = *p;
/* XXX: bounds checking with cursor/etc! */
t->t_scrollreg.ts_begin = 0;

9
sys/dev/syscons/teken/teken_subr.h
View File

@ -37,7 +37,8 @@ teken_tab_isset(teken_t *t, unsigned int col)
{
unsigned int b, o;
teken_assert(col <= T_NUMCOL);
if (col >= T_NUMCOL)
return ((col & 0x7) == 0);
b = col / (sizeof(unsigned int) * 8);
o = col % (sizeof(unsigned int) * 8);
@ -50,7 +51,8 @@ teken_tab_clear(teken_t *t, unsigned int col)
{
unsigned int b, o;
teken_assert(col <= T_NUMCOL);
if (col >= T_NUMCOL)
return;
b = col / (sizeof(unsigned int) * 8);
o = col % (sizeof(unsigned int) * 8);
@ -63,7 +65,8 @@ teken_tab_set(teken_t *t, unsigned int col)
{
unsigned int b, o;
teken_assert(col <= T_NUMCOL);
if (col >= T_NUMCOL)
return;
b = col / (sizeof(unsigned int) * 8);
o = col % (sizeof(unsigned int) * 8);