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screen: remove redundant redrawings of the entire edit window

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(It may have been necessary in the past; there is no need for it now.)

This fixes https://savannah.gnu.org/bugs/?48633.
This commit is contained in:
Benno Schulenberg 2016-07-26 21:15:28 +02:00
parent 03b168d0e3
commit faa46a3c71
1 changed files with 0 additions and 8 deletions
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8
src/winio.c
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@ -2703,14 +2703,6 @@ void edit_scroll(scroll_dir direction, ssize_t nlines)
/* Part 2: nlines is the number of lines in the scrolled region of
* the edit window that we need to draw. */
/* If the top or bottom line of the file is now visible in the edit
* window, we need to draw the entire edit window. */
if ((direction == UPWARD && openfile->edittop ==
openfile->fileage) || (direction == DOWNWARD &&
openfile->edittop->lineno + editwinrows - 1 >=
openfile->filebot->lineno))
nlines = editwinrows;
/* If the scrolled region contains only one line, and the line
* before it is visible in the edit window, we need to draw it too.
* If the scrolled region contains more than one line, and the lines