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Blame 7.4.869

c4 c5 c5-plus c6 c6-plus c7 c7-alt c7-beta c8 c8-beta c8s c9 c9-beta c9s-sig-hyperscale
  1.   e084005e0cc1479c96e178960f22372e39fc3056
  2.   7.4.869
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To: vim_dev@googlegroups.com
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Subject: Patch 7.4.869
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Fcc: outbox
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From: Bram Moolenaar <Bram@moolenaar.net>
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Mime-Version: 1.0
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Content-Type: text/plain; charset=UTF-8
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Content-Transfer-Encoding: 8bit
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------------
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Patch 7.4.869
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Problem:    MS-Windows: scrolling may cause text to disappear when using an
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            Intel GPU.
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Solution:   Call GetPixel(). (Yohei Endo)
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Files:      src/gui_w48.c
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*** ../vim-7.4.868/src/gui_w48.c	2015-09-15 14:12:01.382632522 +0200
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--- src/gui_w48.c	2015-09-15 17:57:35.316887514 +0200
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***************
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*** 2389,2395 ****
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  	return;
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      if (first_tabpage->tp_next != NULL)
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!         add_tabline_popup_menu_entry(tab_pmenu,
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  					  TABLINE_MENU_CLOSE, _("Close tab"));
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      add_tabline_popup_menu_entry(tab_pmenu, TABLINE_MENU_NEW, _("New tab"));
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      add_tabline_popup_menu_entry(tab_pmenu, TABLINE_MENU_OPEN,
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--- 2389,2395 ----
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  	return;
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      if (first_tabpage->tp_next != NULL)
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! 	add_tabline_popup_menu_entry(tab_pmenu,
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  					  TABLINE_MENU_CLOSE, _("Close tab"));
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      add_tabline_popup_menu_entry(tab_pmenu, TABLINE_MENU_NEW, _("New tab"));
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      add_tabline_popup_menu_entry(tab_pmenu, TABLINE_MENU_OPEN,
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***************
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*** 2931,2940 ****
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      base_width = gui_get_base_width()
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  	+ (GetSystemMetrics(SM_CXFRAME) +
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!            GetSystemMetrics(SM_CXPADDEDBORDER)) * 2;
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      base_height = gui_get_base_height()
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  	+ (GetSystemMetrics(SM_CYFRAME) +
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!            GetSystemMetrics(SM_CXPADDEDBORDER)) * 2
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  	+ GetSystemMetrics(SM_CYCAPTION)
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  #ifdef FEAT_MENU
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  	+ gui_mswin_get_menu_height(FALSE)
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--- 2931,2940 ----
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      base_width = gui_get_base_width()
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  	+ (GetSystemMetrics(SM_CXFRAME) +
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! 	   GetSystemMetrics(SM_CXPADDEDBORDER)) * 2;
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      base_height = gui_get_base_height()
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  	+ (GetSystemMetrics(SM_CYFRAME) +
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! 	   GetSystemMetrics(SM_CXPADDEDBORDER)) * 2
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  	+ GetSystemMetrics(SM_CYCAPTION)
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  #ifdef FEAT_MENU
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  	+ gui_mswin_get_menu_height(FALSE)
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***************
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*** 2997,3002 ****
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--- 2997,3016 ----
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  }
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  /*
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+  * On some Intel GPUs, the regions drawn just prior to ScrollWindowEx()
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+  * may not be scrolled out properly.
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+  * For gVim, when _OnScroll() is repeated, the character at the
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+  * previous cursor position may be left drawn after scroll.
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+  * The problem can be avoided by calling GetPixel() to get a pixel in
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+  * the region before ScrollWindowEx().
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+  */
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+     static void
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+ intel_gpu_workaround(void)
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+ {
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+     GetPixel(s_hdc, FILL_X(gui.col), FILL_Y(gui.row));
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+ }
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+
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+ /*
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   * Delete the given number of lines from the given row, scrolling up any
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   * text further down within the scroll region.
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   */
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***************
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*** 3007,3012 ****
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--- 3021,3028 ----
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  {
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      RECT	rc;
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+     intel_gpu_workaround();
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+
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      rc.left = FILL_X(gui.scroll_region_left);
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      rc.right = FILL_X(gui.scroll_region_right + 1);
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      rc.top = FILL_Y(row);
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***************
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*** 3038,3043 ****
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--- 3054,3061 ----
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  {
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      RECT	rc;
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+     intel_gpu_workaround();
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+
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      rc.left = FILL_X(gui.scroll_region_left);
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      rc.right = FILL_X(gui.scroll_region_right + 1);
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      rc.top = FILL_Y(row);
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***************
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*** 3319,3328 ****
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      GetWindowRect(s_hwnd, &rect);
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      gui_resize_shell(rect.right - rect.left
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  			- (GetSystemMetrics(SM_CXFRAME) +
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!                            GetSystemMetrics(SM_CXPADDEDBORDER)) * 2,
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  		     rect.bottom - rect.top
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  			- (GetSystemMetrics(SM_CYFRAME) +
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!                            GetSystemMetrics(SM_CXPADDEDBORDER)) * 2
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  			- GetSystemMetrics(SM_CYCAPTION)
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  #ifdef FEAT_MENU
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  			- gui_mswin_get_menu_height(FALSE)
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--- 3337,3346 ----
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      GetWindowRect(s_hwnd, &rect);
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      gui_resize_shell(rect.right - rect.left
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  			- (GetSystemMetrics(SM_CXFRAME) +
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! 			   GetSystemMetrics(SM_CXPADDEDBORDER)) * 2,
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  		     rect.bottom - rect.top
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  			- (GetSystemMetrics(SM_CYFRAME) +
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! 			   GetSystemMetrics(SM_CXPADDEDBORDER)) * 2
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  			- GetSystemMetrics(SM_CYCAPTION)
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  #ifdef FEAT_MENU
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  			- gui_mswin_get_menu_height(FALSE)
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*** ../vim-7.4.868/src/version.c	2015-09-15 17:30:35.913682004 +0200
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--- src/version.c	2015-09-15 17:55:53.009950236 +0200
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***************
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*** 743,744 ****
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--- 743,746 ----
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  {   /* Add new patch number below this line */
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+ /**/
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+     869,
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  /**/
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--
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Lower life forms have more fun!
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 /// Bram Moolenaar -- Bram@Moolenaar.net -- http://www.Moolenaar.net   \\\
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///        sponsor Vim, vote for features -- http://www.Vim.org/sponsor/ \\\
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\\\  an exciting new programming language -- http://www.Zimbu.org        ///
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 \\\            help me help AIDS victims -- http://ICCF-Holland.org    ///

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