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(try_window_reusing_current_matrix):

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Handle the case where we reach the old displayed text,
out of sync with the old line boundary.
This commit is contained in:
Richard M. Stallman 2004-09-18 14:53:42 +00:00
parent d66fe3340c
commit 3df5f8aad8
2 changed files with 42 additions and 6 deletions
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6
src/ChangeLog
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@ -1,3 +1,9 @@
2004-09-18 Richard M. Stallman <rms@gnu.org>
* xdisp.c (try_window_reusing_current_matrix):
Handle the case where we reach the old displayed text,
out of sync with the old line boundary.
2004-09-14 Stefan <monnier@iro.umontreal.ca>
* fileio.c (Finsert_file_contents): Fix case of replacement in a

42
src/xdisp.c
View File

@ -12404,10 +12404,36 @@ try_window_reusing_current_matrix (w)
last_text_row = last_reused_text_row = NULL;
while (it.current_y < it.last_visible_y
&& IT_CHARPOS (it) < CHARPOS (start)
&& !fonts_changed_p)
if (display_line (&it))
last_text_row = it.glyph_row - 1;
{
/* If we have reached into the characters in the START row,
that means the line boundaries have changed. So we
can't start copying with the row START. Maybe it will
work to start copying with the following row. */
while (IT_CHARPOS (it) > CHARPOS (start))
{
/* Advance to the next row as the "start". */
start_row++;
start = start_row->start.pos;
/* If there are no more rows to try, or just one, give up. */
if (start_row == MATRIX_MODE_LINE_ROW (w->current_matrix) - 1
|| w->vscroll || MATRIX_ROW_PARTIALLY_VISIBLE_P (start_row)
|| CHARPOS (start) == ZV)
{
clear_glyph_matrix (w->desired_matrix);
return 0;
}
start_vpos = MATRIX_ROW_VPOS (start_row, w->current_matrix);
}
/* If we have reached alignment,
we can copy the rest of the rows. */
if (IT_CHARPOS (it) == CHARPOS (start))
break;
if (display_line (&it))
last_text_row = it.glyph_row - 1;
}
/* A value of current_y < last_visible_y means that we stopped
at the previous window start, which in turn means that we
@ -12415,12 +12441,12 @@ try_window_reusing_current_matrix (w)
if (it.current_y < it.last_visible_y)
{
/* IT.vpos always starts from 0; it counts text lines. */
nrows_scrolled = it.vpos;
nrows_scrolled = it.vpos - (start_row - MATRIX_FIRST_TEXT_ROW (w->current_matrix));
/* Find PT if not already found in the lines displayed. */
if (w->cursor.vpos < 0)
{
int dy = it.current_y - first_row_y;
int dy = it.current_y - start_row->y;
row = MATRIX_FIRST_TEXT_ROW (w->current_matrix);
row = row_containing_pos (w, PT, row, NULL, dy);
@ -12440,7 +12466,7 @@ try_window_reusing_current_matrix (w)
scroll_run_hook will clear the cursor, and use the
current matrix to get the height of the row the cursor is
in. */
run.current_y = first_row_y;
run.current_y = start_row->y;
run.desired_y = it.current_y;
run.height = it.last_visible_y - it.current_y;
@ -15335,6 +15361,10 @@ display_mode_element (it, depth, field_width, precision, elt, props, risky)
Lisp_Object oprops, aelt;
oprops = Ftext_properties_at (make_number (0), elt);
/* If the starting string's properties are not what
we want, translate the string. Also, if the string
is risky, do that anyway. */
if (NILP (Fequal (props, oprops)) || risky)
{
/* If the starting string has properties,