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db_putchar - check if we need to wrap at $maxwidth after whitespace. 

That fixes orphaned first character in something like:

    |Stopped in ... longsymbol+0xf00:  |
    |i
    |nsn
This commit is contained in:
uwe 2019-09-12 18:43:02 +00:00
parent bc4d18d525
commit af5fcdd4a0
1 changed files with 22 additions and 10 deletions
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32
sys/ddb/db_output.c
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@ -1,4 +1,4 @@
/* $NetBSD: db_output.c,v 1.34 2018/09/16 23:18:55 mrg Exp $ */
/* $NetBSD: db_output.c,v 1.35 2019/09/12 18:43:02 uwe Exp $ */
/*
* Mach Operating System
@ -35,7 +35,7 @@
#endif
#include <sys/cdefs.h>
__KERNEL_RCSID(0, "$NetBSD: db_output.c,v 1.34 2018/09/16 23:18:55 mrg Exp $");
__KERNEL_RCSID(0, "$NetBSD: db_output.c,v 1.35 2019/09/12 18:43:02 uwe Exp $");
#include <sys/param.h>
#include <sys/systm.h>
@ -103,6 +103,24 @@ db_force_whitespace(void)
db_last_non_space = db_output_position;
}
/*
* End the current line if we it exceeds $maxwidth
*/
static void
db_check_wrap(void)
{
if (db_max_width >= DB_MIN_MAX_WIDTH
&& db_output_position >= db_max_width) {
cnputc('\n');
db_output_position = 0;
db_last_non_space = 0;
db_output_line++;
}
}
static void
db_more(void)
{
@ -148,16 +166,10 @@ db_putchar(int c)
* Use tabs if possible.
*/
db_force_whitespace();
db_check_wrap();
cnputc(c);
db_output_position++;
if (db_max_width >= DB_MIN_MAX_WIDTH
&& db_output_position >= db_max_width) {
/* auto new line */
cnputc('\n');
db_output_position = 0;
db_last_non_space = 0;
db_output_line++;
}
db_check_wrap();
db_last_non_space = db_output_position;
} else if (c == '\n') {
/* Return */