WPT
wpt / editing / other / join-different-white-space-style-left-line-and-right-paragraph.html?method=backspace&left-white-space=pre-wrap&right-white-space=pre-line
Spec: https://w3c.github.io/editing/execCommand.html ↗
Runs: Chrome 155.0.8039.0 (wpt@2b4dfe72c, 2026-09-03) | Firefox 157.0a1 (wpt@2b4dfe72c, 2026-09-03) | Safari 251 preview (wpt@5ce815a83, 2026-08-27) | Ladybird 1.0-56c61 (wpt@ed1909ed6, 2026-09-03) | Servo Servo 0.6 (wpt@09159dcb3, 2026-09-02) | Blitz 188486089 (wpt@a95401e4e, 2026-09-02)
View on the Blitz WPT dashboard | Open test on wpt.live | wpt.fyi
| Chrome | Firefox | Safari | Ladybird | Servo | Blitz | |
|---|---|---|---|---|---|---|
| Total | 60/60 | 60/60 | 60/60 | 16/60 | 0/60 | NOT RUN |
| Subtest | Chrome | Firefox | Safari | Ladybird | Servo | Blitz |
|---|---|---|---|---|---|---|
| delete at <span style="white-space:pre-wrap">abc</span><div style="white-space:pre-line">[]def\nghi</div> | PASS | PASS | PASS | FAIL | FAIL | — |
| delete at <span style="white-space:pre-wrap">abc</span><div class="preLine">[]def\nghi</div> | PASS | PASS | PASS | FAIL | FAIL | — |
| delete at <span class="preWrap">abc</span><div style="white-space:pre-line">[]def\nghi</div> | PASS | PASS | PASS | FAIL | FAIL | — |
| delete at <span style="white-space:pre-wrap">abc</span><div style="white-space:pre-line">[]def<br>ghi</div> | PASS | PASS | PASS | PASS | FAIL | — |
| delete at <span style="white-space:pre-wrap">abc</span><div class="preLine">[]def<br>ghi</div> | PASS | PASS | PASS | FAIL | FAIL | — |
| delete at <span class="preWrap">abc</span><div style="white-space:pre-line">[]def<br>ghi</div> | PASS | PASS | PASS | PASS | FAIL | — |
| delete at <span style="white-space:pre-wrap">abc</span><div style="white-space:pre-line"><b>[]def\nghi</b></div> | PASS | PASS | PASS | FAIL | FAIL | — |
| delete at <span style="white-space:pre-wrap">abc</span><div class="preLine"><b>[]def\nghi</b></div> | PASS | PASS | PASS | FAIL | FAIL | — |
| delete at <span class="preWrap">abc</span><div style="white-space:pre-line"><b>[]def\nghi</b></div> | PASS | PASS | PASS | FAIL | FAIL | — |
| delete at <span style="white-space:pre-wrap">abc</span><div style="white-space:pre-line"><b>[]def<br>ghi</b></div> | PASS | PASS | PASS | FAIL | FAIL | — |
| delete at <span style="white-space:pre-wrap">abc</span><div class="preLine"><b>[]def<br>ghi</b></div> | PASS | PASS | PASS | FAIL | FAIL | — |
| delete at <span class="preWrap">abc</span><div style="white-space:pre-line"><b>[]def<br>ghi</b></div> | PASS | PASS | PASS | FAIL | FAIL | — |
| delete at <span style="white-space:pre-wrap">abc</span><div style="white-space:pre-line"><b>[]def</b>ghi\njkl</div> | PASS | PASS | PASS | FAIL | FAIL | — |
| delete at <span style="white-space:pre-wrap">abc</span><div class="preLine"><b>[]def</b>ghi\njkl</div> | PASS | PASS | PASS | FAIL | FAIL | — |
| delete at <span class="preWrap">abc</span><div style="white-space:pre-line"><b>[]def</b>ghi\njkl</div> | PASS | PASS | PASS | FAIL | FAIL | — |
| delete at <span style="white-space:pre-wrap">abc</span><div style="white-space:pre-line"><b>[]def</b>ghi<br>jkl</div> | PASS | PASS | PASS | FAIL | FAIL | — |
| delete at <span style="white-space:pre-wrap">abc</span><div class="preLine"><b>[]def</b>ghi<br>jkl</div> | PASS | PASS | PASS | FAIL | FAIL | — |
| delete at <span class="preWrap">abc</span><div style="white-space:pre-line"><b>[]def</b>ghi<br>jkl</div> | PASS | PASS | PASS | FAIL | FAIL | — |
| delete at <span style="white-space:pre-wrap">abc</span><div style="white-space:pre-line"><b>[]def</b>\nghi</div> | PASS | PASS | PASS | FAIL | FAIL | — |
| delete at <span style="white-space:pre-wrap">abc</span><div class="preLine"><b>[]def</b>\nghi</div> | PASS | PASS | PASS | FAIL | FAIL | — |
| delete at <span class="preWrap">abc</span><div style="white-space:pre-line"><b>[]def</b>\nghi</div> | PASS | PASS | PASS | FAIL | FAIL | — |
| delete at <span style="white-space:pre-wrap">abc</span><div style="white-space:pre-line"><b>[]def</b><br>ghi</div> | PASS | PASS | PASS | PASS | FAIL | — |
| delete at <span style="white-space:pre-wrap">abc</span><div class="preLine"><b>[]def</b><br>ghi</div> | PASS | PASS | PASS | FAIL | FAIL | — |
| delete at <span class="preWrap">abc</span><div style="white-space:pre-line"><b>[]def</b><br>ghi</div> | PASS | PASS | PASS | PASS | FAIL | — |
| delete at <span style="white-space:pre-wrap">abc</span><div style="white-space:pre-line"><b>[]def\n</b>ghi</div> | PASS | PASS | PASS | FAIL | FAIL | — |
| delete at <span style="white-space:pre-wrap">abc</span><div class="preLine"><b>[]def\n</b>ghi</div> | PASS | PASS | PASS | FAIL | FAIL | — |
| delete at <span class="preWrap">abc</span><div style="white-space:pre-line"><b>[]def\n</b>ghi</div> | PASS | PASS | PASS | FAIL | FAIL | — |
| delete at <span style="white-space:pre-wrap">abc</span><div style="white-space:pre-line"><b>[]def<br></b>ghi</div> | PASS | PASS | PASS | FAIL | FAIL | — |
| delete at <span style="white-space:pre-wrap">abc</span><div class="preLine"><b>[]def<br></b>ghi</div> | PASS | PASS | PASS | FAIL | FAIL | — |
| delete at <span class="preWrap">abc</span><div style="white-space:pre-line"><b>[]def<br></b>ghi</div> | PASS | PASS | PASS | FAIL | FAIL | — |
| delete at <span style="white-space:pre-wrap">abc</span><div style="white-space:pre-line"><div>[]def</div>ghi</div> | PASS | PASS | PASS | FAIL | FAIL | — |
| delete at <span style="white-space:pre-wrap">abc</span><div class="preLine"><div>[]def</div>ghi</div> | PASS | PASS | PASS | FAIL | FAIL | — |
| delete at <span class="preWrap">abc</span><div style="white-space:pre-line"><div>[]def</div>ghi</div> | PASS | PASS | PASS | FAIL | FAIL | — |
| delete at <span style="white-space:pre-wrap">abc</span><div style="white-space:pre-line">[]def<div>ghi</div></div> | PASS | PASS | PASS | PASS | FAIL | — |
| delete at <span style="white-space:pre-wrap">abc</span><div class="preLine">[]def<div>ghi</div></div> | PASS | PASS | PASS | FAIL | FAIL | — |
| delete at <span class="preWrap">abc</span><div style="white-space:pre-line">[]def<div>ghi</div></div> | PASS | PASS | PASS | PASS | FAIL | — |
| delete at <span style="white-space:pre-wrap">abc</span><div style="white-space:pre-line"><div>[]def</div>ghi\njkl</div> | PASS | PASS | PASS | FAIL | FAIL | — |
| delete at <span style="white-space:pre-wrap">abc</span><div class="preLine"><div>[]def</div>ghi\njkl</div> | PASS | PASS | PASS | FAIL | FAIL | — |
| delete at <span class="preWrap">abc</span><div style="white-space:pre-line"><div>[]def</div>ghi\njkl</div> | PASS | PASS | PASS | FAIL | FAIL | — |
| delete at <span style="white-space:pre-wrap">abc</span><div style="white-space:pre-line"><div>[]def</div>ghi<br>jkl</div> | PASS | PASS | PASS | FAIL | FAIL | — |
| delete at <span style="white-space:pre-wrap">abc</span><div class="preLine"><div>[]def</div>ghi<br>jkl</div> | PASS | PASS | PASS | FAIL | FAIL | — |
| delete at <span class="preWrap">abc</span><div style="white-space:pre-line"><div>[]def</div>ghi<br>jkl</div> | PASS | PASS | PASS | FAIL | FAIL | — |
| delete at <span style="white-space:pre-wrap">abc</span><div style="white-space:pre-line">[]def<div>ghi</div>\njkl</div> | PASS | PASS | PASS | PASS | FAIL | — |
| delete at <span style="white-space:pre-wrap">abc</span><div class="preLine">[]def<div>ghi</div>\njkl</div> | PASS | PASS | PASS | FAIL | FAIL | — |
| delete at <span class="preWrap">abc</span><div style="white-space:pre-line">[]def<div>ghi</div>\njkl</div> | PASS | PASS | PASS | PASS | FAIL | — |
| delete at <span style="white-space:pre-wrap">abc</span><div style="white-space:pre-line">[]def<div>ghi</div><br>jkl</div> | PASS | PASS | PASS | PASS | FAIL | — |
| delete at <span style="white-space:pre-wrap">abc</span><div class="preLine">[]def<div>ghi</div><br>jkl</div> | PASS | PASS | PASS | FAIL | FAIL | — |
| delete at <span class="preWrap">abc</span><div style="white-space:pre-line">[]def<div>ghi</div><br>jkl</div> | PASS | PASS | PASS | PASS | FAIL | — |
| delete at <span style="white-space:pre-wrap">abc</span><div style="white-space:pre-line"><div>[]def\nghi</div>jkl\nmno</div> | PASS | PASS | PASS | FAIL | FAIL | — |
| delete at <span style="white-space:pre-wrap">abc</span><div class="preLine"><div>[]def\nghi</div>jkl\nmno</div> | PASS | PASS | PASS | FAIL | FAIL | — |
| delete at <span class="preWrap">abc</span><div style="white-space:pre-line"><div>[]def\nghi</div>jkl\nmno</div> | PASS | PASS | PASS | FAIL | FAIL | — |
| delete at <span style="white-space:pre-wrap">abc</span><div style="white-space:pre-line"><div>[]def<br>ghi</div>jkl<br>mno</div> | PASS | PASS | PASS | PASS | FAIL | — |
| delete at <span style="white-space:pre-wrap">abc</span><div class="preLine"><div>[]def<br>ghi</div>jkl<br>mno</div> | PASS | PASS | PASS | FAIL | FAIL | — |
| delete at <span class="preWrap">abc</span><div style="white-space:pre-line"><div>[]def<br>ghi</div>jkl<br>mno</div> | PASS | PASS | PASS | PASS | FAIL | — |
| delete at <span style="white-space:pre-wrap">abc</span><div style="white-space:pre-line">[]def<div>ghi</div>jkl\nmno</div> | PASS | PASS | PASS | PASS | FAIL | — |
| delete at <span style="white-space:pre-wrap">abc</span><div class="preLine">[]def<div>ghi</div>jkl\nmno</div> | PASS | PASS | PASS | FAIL | FAIL | — |
| delete at <span class="preWrap">abc</span><div style="white-space:pre-line">[]def<div>ghi</div>jkl\nmno</div> | PASS | PASS | PASS | PASS | FAIL | — |
| delete at <span style="white-space:pre-wrap">abc</span><div style="white-space:pre-line">[]def<div>ghi</div>jkl<br>mno</div> | PASS | PASS | PASS | PASS | FAIL | — |
| delete at <span style="white-space:pre-wrap">abc</span><div class="preLine">[]def<div>ghi</div>jkl<br>mno</div> | PASS | PASS | PASS | FAIL | FAIL | — |
| delete at <span class="preWrap">abc</span><div style="white-space:pre-line">[]def<div>ghi</div>jkl<br>mno</div> | PASS | PASS | PASS | PASS | FAIL | — |