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moving: redraw not just the new current line but also the prior one

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This fixes http://savannah.gnu.org/bugs/?51821.
This commit is contained in:
David Lawrence Ramsey 2017-08-22 11:51:02 -05:00 committed by Benno Schulenberg
parent 047cf9be9c
commit a850bb2513
1 changed files with 10 additions and 10 deletions
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20
src/move.c
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@ -463,6 +463,7 @@ void do_end(void)
* also scroll the screen one row, so the cursor stays in the same spot. */
void do_up(bool scroll_only)
{
filestruct *was_current = openfile->current;
size_t leftedge, target_column;
/* When just scrolling and the top of the file is onscreen, get out. */
@ -482,7 +483,7 @@ void do_up(bool scroll_only)
if (scroll_only)
edit_scroll(UPWARD, 1);
edit_redraw(openfile->current, FLOWING);
edit_redraw(was_current, FLOWING);
/* <Up> should not change placewewant, so restore it. */
openfile->placewewant = leftedge + target_column;
@ -492,6 +493,7 @@ void do_up(bool scroll_only)
* scroll the screen one row, so the cursor stays in the same spot. */
void do_down(bool scroll_only)
{
filestruct *was_current = openfile->current;
size_t leftedge, target_column;
get_edge_and_target(&leftedge, &target_column);
@ -506,7 +508,7 @@ void do_down(bool scroll_only)
if (scroll_only)
edit_scroll(DOWNWARD, 1);
edit_redraw(openfile->current, FLOWING);
edit_redraw(was_current, FLOWING);
/* <Down> should not change placewewant, so restore it. */
openfile->placewewant = leftedge + target_column;
@ -541,33 +543,31 @@ void do_scroll_down(void)
/* Move left one character. */
void do_left(void)
{
filestruct *was_current = openfile->current;
if (openfile->current_x > 0)
openfile->current_x = move_mbleft(openfile->current->data,
openfile->current_x);
else if (openfile->current != openfile->fileage) {
openfile->current = openfile->current->prev;
openfile->current_x = strlen(openfile->current->data);
edit_redraw(openfile->current->next, FLOWING);
return;
}
edit_redraw(openfile->current, FLOWING);
edit_redraw(was_current, FLOWING);
}
/* Move right one character. */
void do_right(void)
{
filestruct *was_current = openfile->current;
if (openfile->current->data[openfile->current_x] != '\0')
openfile->current_x = move_mbright(openfile->current->data,
openfile->current_x);
else if (openfile->current != openfile->filebot) {
openfile->current = openfile->current->next;
openfile->current_x = 0;
edit_redraw(openfile->current->prev, FLOWING);
return;
}
edit_redraw(openfile->current, FLOWING);
edit_redraw(was_current, FLOWING);
}