really fix the previous display problem with searches that move the

cursor offscreen and from a page other than the first one onto a
different page by reverting the erroneous change to edit_scroll() and
adding the proper fix to edit_redraw()


git-svn-id: svn://svn.savannah.gnu.org/nano/trunk/nano@3263 35c25a1d-7b9e-4130-9fde-d3aeb78583b8

ChangeLog

@@ -23,13 +23,13 @@ CVS code -
 	  set errno to EINVAL as well as return -1 if they fail.  This
 	  matches the manual page. (DLR)
 - winio.c:
-  edit_scroll()
-	- Redraw the lines before and after the scrolled region even if
-	  the scrolled region was only one line.  This fixes a display
-	  problem that occurs after doing a search that scrolls the
-	  screen down one line and leaves the cursor on the last line of
-	  the screen, in which case we need to update the line after the
-	  scrolled region. (DLR)
+  edit_redraw()
+	- If either current or old_current is offscreen, we're not on
+	  the first page, and/or we're not on the same page as before,
+	  update old_current before scrolling the edit window.  This
+	  fixes a potential display problem when a search moves the
+	  cursor offscreen and onto a different page. (DLR, found by
+	  Mike Frysinger)
 - doc/nano.1:
 	- Better display the default values for quotestr. (DLR)
 - doc/nanorc.5:

src/winio.c

@@ -2702,9 +2702,12 @@ void edit_scroll(scroll_dir direction, ssize_t nlines)
 	1 >= openfile->filebot->lineno))
 	nlines = editwinrows;
 
-    /* If the lines before and after the scrolled region are visible in
-     * the edit window, we need to draw them too. */
-    nlines += 2;
+    /* 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
+     * before and after the scrolled region are visible in the edit
+     * window, we need to draw them too. */
+    nlines += (nlines == 1) ? 1 : 2;
 
     if (nlines > editwinrows)
 	nlines = editwinrows;
@@ -2769,6 +2772,11 @@ void edit_redraw(const filestruct *old_current, size_t old_pww)
 
 	openfile->edittop = old_edittop;
 
+	/* Update old_current if we're not on the first page and/or
+	 * we're not on the same page as before. */
+	if (do_redraw)
+	    update_line(old_current, 0);
+
 	/* Scroll the edit window up or down until edittop is in range
 	 * of current. */
 	if (nlines < 0)