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wpt / editing / other / join-different-white-space-style-paragraphs.html?method=backspace&left-white-space=pre&right-white-space=nowrap

Spec: https://w3c.github.io/editing/execCommand.html ↗

Runs: Chrome 155.0.8041.0 (wpt@0c9001c53, 2026-09-04) | Firefox 157.0a1 (wpt@18be93235, 2026-09-04) | Safari 251 preview (wpt@2c385f65e, 2026-09-04) | Ladybird 1.0-70fb3 (wpt@0c9001c53, 2026-09-04) | Servo Servo 0.6 (wpt@2c385f65e, 2026-09-04) | Blitz a50cb8971 (wpt@a95401e4e, 2026-09-03)

View on the Blitz WPT dashboard | Open test on wpt.live | wpt.fyi

ChromeFirefoxSafariLadybirdServoBlitz
Total44/4444/4444/449/440/44NOT RUN
SubtestChromeFirefoxSafariLadybirdServoBlitz
delete at <div style="white-space:pre">abc</div><div style="white-space:nowrap">[]def</div>PASSPASSPASSPASSFAIL—
delete at <div style="white-space:pre">abc</div>\n<div style="white-space:nowrap">[]def</div>PASSPASSPASSPASSFAIL—
delete at <div style="white-space:pre">abc</div><div class="nowrap">[]def</div>PASSPASSPASSFAILFAIL—
delete at <div class="pre">abc</div><div style="white-space:nowrap">[]def</div>PASSPASSPASSPASSFAIL—
delete at <div style="white-space:pre">abc</div><div style="white-space:nowrap">[]def<br>ghi</div>PASSPASSPASSFAILFAIL—
delete at <div style="white-space:pre">abc</div>\n<div style="white-space:nowrap">[]def<br>ghi</div>PASSPASSPASSFAILFAIL—
delete at <div style="white-space:pre">abc</div><div class="nowrap">[]def<br>ghi</div>PASSPASSPASSFAILFAIL—
delete at <div class="pre">abc</div><div style="white-space:nowrap">[]def<br>ghi</div>PASSPASSPASSFAILFAIL—
delete at <div style="white-space:pre">abc</div><div style="white-space:nowrap"><b>[]def<br>ghi</b></div>PASSPASSPASSFAILFAIL—
delete at <div style="white-space:pre">abc</div>\n<div style="white-space:nowrap"><b>[]def<br>ghi</b></div>PASSPASSPASSFAILFAIL—
delete at <div style="white-space:pre">abc</div><div class="nowrap"><b>[]def<br>ghi</b></div>PASSPASSPASSFAILFAIL—
delete at <div class="pre">abc</div><div style="white-space:nowrap"><b>[]def<br>ghi</b></div>PASSPASSPASSFAILFAIL—
delete at <div style="white-space:pre">abc</div><div style="white-space:nowrap"><b>[]def</b>ghi<br>jkl</div>PASSPASSPASSFAILFAIL—
delete at <div style="white-space:pre">abc</div>\n<div style="white-space:nowrap"><b>[]def</b>ghi<br>jkl</div>PASSPASSPASSFAILFAIL—
delete at <div style="white-space:pre">abc</div><div class="nowrap"><b>[]def</b>ghi<br>jkl</div>PASSPASSPASSFAILFAIL—
delete at <div class="pre">abc</div><div style="white-space:nowrap"><b>[]def</b>ghi<br>jkl</div>PASSPASSPASSFAILFAIL—
delete at <div style="white-space:pre">abc</div><div style="white-space:nowrap"><b>[]def</b><br>ghi</div>PASSPASSPASSFAILFAIL—
delete at <div style="white-space:pre">abc</div>\n<div style="white-space:nowrap"><b>[]def</b><br>ghi</div>PASSPASSPASSFAILFAIL—
delete at <div style="white-space:pre">abc</div><div class="nowrap"><b>[]def</b><br>ghi</div>PASSPASSPASSFAILFAIL—
delete at <div class="pre">abc</div><div style="white-space:nowrap"><b>[]def</b><br>ghi</div>PASSPASSPASSFAILFAIL—
delete at <div style="white-space:pre">abc</div><div style="white-space:nowrap"><b>[]def<br></b>ghi</div>PASSPASSPASSFAILFAIL—
delete at <div style="white-space:pre">abc</div>\n<div style="white-space:nowrap"><b>[]def<br></b>ghi</div>PASSPASSPASSFAILFAIL—
delete at <div style="white-space:pre">abc</div><div class="nowrap"><b>[]def<br></b>ghi</div>PASSPASSPASSFAILFAIL—
delete at <div class="pre">abc</div><div style="white-space:nowrap"><b>[]def<br></b>ghi</div>PASSPASSPASSFAILFAIL—
delete at <div style="white-space:pre">abc</div><div style="white-space:nowrap"><div>[]def</div>ghi</div>PASSPASSPASSPASSFAIL—
delete at <div style="white-space:pre">abc</div>\n<div style="white-space:nowrap"><div>[]def</div>ghi</div>PASSPASSPASSPASSFAIL—
delete at <div style="white-space:pre">abc</div><div class="nowrap"><div>[]def</div>ghi</div>PASSPASSPASSFAILFAIL—
delete at <div class="pre">abc</div><div style="white-space:nowrap"><div>[]def</div>ghi</div>PASSPASSPASSPASSFAIL—
delete at <div style="white-space:pre">abc</div><div style="white-space:nowrap">[]def<div>ghi</div></div>PASSPASSPASSFAILFAIL—
delete at <div style="white-space:pre">abc</div>\n<div style="white-space:nowrap">[]def<div>ghi</div></div>PASSPASSPASSFAILFAIL—
delete at <div style="white-space:pre">abc</div><div class="nowrap">[]def<div>ghi</div></div>PASSPASSPASSFAILFAIL—
delete at <div class="pre">abc</div><div style="white-space:nowrap">[]def<div>ghi</div></div>PASSPASSPASSFAILFAIL—
delete at <div style="white-space:pre">abc</div><div style="white-space:nowrap"><div>[]def</div>ghi<br>jkl</div>PASSPASSPASSPASSFAIL—
delete at <div style="white-space:pre">abc</div>\n<div style="white-space:nowrap"><div>[]def</div>ghi<br>jkl</div>PASSPASSPASSPASSFAIL—
delete at <div style="white-space:pre">abc</div><div class="nowrap"><div>[]def</div>ghi<br>jkl</div>PASSPASSPASSFAILFAIL—
delete at <div class="pre">abc</div><div style="white-space:nowrap"><div>[]def</div>ghi<br>jkl</div>PASSPASSPASSPASSFAIL—
delete at <div style="white-space:pre">abc</div><div style="white-space:nowrap">[]def<div>ghi</div>jkl<br>mno</div>PASSPASSPASSFAILFAIL—
delete at <div style="white-space:pre">abc</div>\n<div style="white-space:nowrap">[]def<div>ghi</div>jkl<br>mno</div>PASSPASSPASSFAILFAIL—
delete at <div style="white-space:pre">abc</div><div class="nowrap">[]def<div>ghi</div>jkl<br>mno</div>PASSPASSPASSFAILFAIL—
delete at <div class="pre">abc</div><div style="white-space:nowrap">[]def<div>ghi</div>jkl<br>mno</div>PASSPASSPASSFAILFAIL—
delete at <div style="white-space:pre">abc</div><div style="white-space:nowrap"><div>[]def<br>ghi</div>jkl</div>PASSPASSPASSFAILFAIL—
delete at <div style="white-space:pre">abc</div>\n<div style="white-space:nowrap"><div>[]def<br>ghi</div>jkl</div>PASSPASSPASSFAILFAIL—
delete at <div style="white-space:pre">abc</div><div class="nowrap"><div>[]def<br>ghi</div>jkl</div>PASSPASSPASSFAILFAIL—
delete at <div class="pre">abc</div><div style="white-space:nowrap"><div>[]def<br>ghi</div>jkl</div>PASSPASSPASSFAILFAIL—