222753 2021-03-04 11:11:29 -0800 [GLIB] fast/text/multi-code-unit-simple-path.html is image failing 2021-03-11 11:12:15 -0800 1 1 1 Unclassified WebKit Text WebKit Nightly Build Unspecified Unspecified NEW https://bugs.webkit.org/show_bug.cgi?id=221356 https://bugs.webkit.org/show_bug.cgi?id=221523 InRadar P2 Normal --- 1 lmoura webkit-unassigned bugs-noreply mmaxfield webkit-bug-importer oldest_to_newest 1735939 0 lmoura 2021-03-04 11:11:29 -0800 fast/text/multi-code-unit-simple-path.html This test tries to render \x11300 and expects a mismatch with an empty document (i.e. something should be rendered). For both GTK and WPE, an empty actual.png is generated, making the expected mismatch to fail. MiniBrowser correctly renders the box around the would be glyph. Forcing WTR to dump the render tree (by removing the expected html), there is a text run for the character: layer at (0,0) size 800x600 RenderView at (0,0) size 800x600 layer at (0,0) size 800x71 RenderBlock {HTML} at (0,0) size 800x71 RenderBody {BODY} at (8,8) size 784x55 RenderBlock {DIV} at (0,0) size 784x55 RenderText {#text} at (0,1) size 37x53 text run at (0,1) width 37: "\x{D804}\x{DF00}" The same failure happens with other characters where the browsers shows the placeholder box, even from the BMP (so, unrelated to the original patch from bu221356). For example, \u1800 (Mongolian block). 1735940 1 422262 lmoura 2021-03-04 11:19:25 -0800 Created attachment 422262 Pixel dump of "a&#x1800;c" Looks like the issue is WTR not drawing the placeholder box, as this dump shows for "a&#x1800;c". The browser correctly shows the placeholder instead of the empty space. Should WTR draw the placeholder too? 1738543 2 webkit-bug-importer 2021-03-11 11:12:15 -0800 <rdar://problem/75324483> 422262 2021-03-04 11:19:25 -0800 2021-03-04 11:19:25 -0800 Pixel dump of "a&#x1800;c" multi-code-unit-simple-path-actual.png image/png 4314 lmoura iVBORw0KGgoAAAANSUhEUgAAAyAAAAJYCAIAAAAVFBUnAAAAKXRFWHRjaGVja3N1bQBhNDg2YTg0 YjEwMzA5MzlkYTIyNzc0N2U3MjkzZmZlOHqTkT4AAAAGYktHRAD/AP8A/6C9p5MAABBaSURBVHic 7d1faNX1H8fxc87mmjacG1lCXWk0RGsZSfNC0OwPRbCLopsiKsqoaN14ERF5scDAi24iMgiRuuhG iUqTMO0qKjUQXZhWXpVlyjpNzTm287s4sd+w2pa+tmM7j8fV5/s9nwPv3T35fr/nu2KlUikAAJBT qvUAAAAzjcACAAgTWAAAYQILACBMYAEAhAksAIAwgQUAECawAADCBBYAQJjAAgAIE1gAAGECCwAg TGABAIQJLACAMIEFABAmsAAAwgQWAECYwAIACBNYAABhAgsAIExgAQCECSwAgDCBBQAQJrAAAMIE FgBAmMACAAgTWAAAYQILACCscfJbjx8/fujQoePHj/f39/f39xeLxba2tqVLl65YsWL27NlTN+Kl KJfLn332WV9f38mTJwcGBlpaWubOndva2rpw4cKOjo5FixY1NTXVekYAYKaZVGA99dRTW7duPXXq 1N9+2tra2tPT89JLL11WsXLw4MH169d/8MEHw8PD/7SnoaHh448/vvPOO6dzMABgxptUYB04cKBa 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