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patch 9.0.0592: display not cleared when scrolling back in messages

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Problem:    Display not cleared when scrolling back in messages, a background
            color is set and t_ut is empty.
Solution:   Clear to the end of the display if needed. (closes #8973)
This commit is contained in:
Bram Moolenaar
2022-09-26 15:19:56 +01:00
parent 4569020538
commit 838b746cce
7 changed files with 75 additions and 12 deletions
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18
src/message.c
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@@ -2913,10 +2913,11 @@ msg_sb_eol(void)
/*
* Display a screen line from previously displayed text at row "row".
* When "clear_to_eol" is set clear the rest of the screen line.
* Returns a pointer to the text for the next line (can be NULL).
*/
static msgchunk_T *
disp_sb_line(int row, msgchunk_T *smp)
disp_sb_line(int row, msgchunk_T *smp, int clear_to_eol)
{
msgchunk_T *mp = smp;
char_u *p;
@@ -2929,6 +2930,12 @@ disp_sb_line(int row, msgchunk_T *smp)
if (*p == '\n') // don't display the line break
++p;
msg_puts_display(p, -1, mp->sb_attr, TRUE);
// If clearing the screen did not work (e.g. because of a background
// color and t_ut isn't set) clear until the last column here.
if (clear_to_eol)
screen_fill(row, row + 1, msg_col, (int)Columns, ' ', ' ', 0);
if (mp->sb_eol || mp->sb_next == NULL)
break;
mp = mp->sb_next;
@@ -3279,15 +3286,16 @@ do_more_prompt(int typed_char)
(int)Rows, 0, NULL) == OK)
{
// display line at top
(void)disp_sb_line(0, mp);
(void)disp_sb_line(0, mp, FALSE);
}
else
{
int did_clear = screenclear();
// redisplay all lines
screenclear();
for (i = 0; mp != NULL && i < Rows - 1; ++i)
{
mp = disp_sb_line(i, mp);
mp = disp_sb_line(i, mp, !did_clear);
++msg_scrolled;
}
}
@@ -3304,7 +3312,7 @@ do_more_prompt(int typed_char)
inc_msg_scrolled();
screen_fill((int)Rows - 2, (int)Rows - 1, 0,
(int)Columns, ' ', ' ', 0);
mp_last = disp_sb_line((int)Rows - 2, mp_last);
mp_last = disp_sb_line((int)Rows - 2, mp_last, FALSE);
--toscroll;
}
}