WPT
wpt / editing / other / join-different-white-space-style-left-paragraph-and-right-line.html?method=backspace&left-white-space=pre&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 | 33/33 | 33/33 | 33/33 | 2/33 | 0/33 | NOT RUN |
| Subtest | Chrome | Firefox | Safari | Ladybird | Servo | Blitz |
|---|---|---|---|---|---|---|
| delete at <div style="white-space:pre">abc</div><span style="white-space:pre-line">[]def</span> | PASS | PASS | PASS | PASS | FAIL | — |
| delete at <div style="white-space:pre">abc</div><span class="preLine">[]def</span> | PASS | PASS | PASS | FAIL | FAIL | — |
| delete at <div class="pre">abc</div><span style="white-space:pre-line">[]def</span> | PASS | PASS | PASS | PASS | FAIL | — |
| delete at <div style="white-space:pre">abc</div><span style="white-space:pre-line">[]def\nghi</span> | PASS | PASS | PASS | FAIL | FAIL | — |
| delete at <div style="white-space:pre">abc</div><span class="preLine">[]def\nghi</span> | PASS | PASS | PASS | FAIL | FAIL | — |
| delete at <div class="pre">abc</div><span style="white-space:pre-line">[]def\nghi</span> | PASS | PASS | PASS | FAIL | FAIL | — |
| delete at <div style="white-space:pre">abc</div><span style="white-space:pre-line">[]def<br>ghi</span> | PASS | PASS | PASS | FAIL | FAIL | — |
| delete at <div style="white-space:pre">abc</div><span class="preLine">[]def<br>ghi</span> | PASS | PASS | PASS | FAIL | FAIL | — |
| delete at <div class="pre">abc</div><span style="white-space:pre-line">[]def<br>ghi</span> | PASS | PASS | PASS | FAIL | FAIL | — |
| delete at <div style="white-space:pre">abc</div><span style="white-space:pre-line"><b>[]def\nghi</b></span> | PASS | PASS | PASS | FAIL | FAIL | — |
| delete at <div style="white-space:pre">abc</div><span class="preLine"><b>[]def\nghi</b></span> | PASS | PASS | PASS | FAIL | FAIL | — |
| delete at <div class="pre">abc</div><span style="white-space:pre-line"><b>[]def\nghi</b></span> | PASS | PASS | PASS | FAIL | FAIL | — |
| delete at <div style="white-space:pre">abc</div><span style="white-space:pre-line"><b>[]def<br>ghi</b></span> | PASS | PASS | PASS | FAIL | FAIL | — |
| delete at <div style="white-space:pre">abc</div><span class="preLine"><b>[]def<br>ghi</b></span> | PASS | PASS | PASS | FAIL | FAIL | — |
| delete at <div class="pre">abc</div><span style="white-space:pre-line"><b>[]def<br>ghi</b></span> | PASS | PASS | PASS | FAIL | FAIL | — |
| delete at <div style="white-space:pre">abc</div><span style="white-space:pre-line"><b>[]def</b>\nghi</span> | PASS | PASS | PASS | FAIL | FAIL | — |
| delete at <div style="white-space:pre">abc</div><span class="preLine"><b>[]def</b>\nghi</span> | PASS | PASS | PASS | FAIL | FAIL | — |
| delete at <div class="pre">abc</div><span style="white-space:pre-line"><b>[]def</b>\nghi</span> | PASS | PASS | PASS | FAIL | FAIL | — |
| delete at <div style="white-space:pre">abc</div><span style="white-space:pre-line"><b>[]def</b><br>ghi</span> | PASS | PASS | PASS | FAIL | FAIL | — |
| delete at <div style="white-space:pre">abc</div><span class="preLine"><b>[]def</b><br>ghi</span> | PASS | PASS | PASS | FAIL | FAIL | — |
| delete at <div class="pre">abc</div><span style="white-space:pre-line"><b>[]def</b><br>ghi</span> | PASS | PASS | PASS | FAIL | FAIL | — |
| delete at <div style="white-space:pre">abc</div><span style="white-space:pre-line"><b>[]def\n</b>ghi</span> | PASS | PASS | PASS | FAIL | FAIL | — |
| delete at <div style="white-space:pre">abc</div><span class="preLine"><b>[]def\n</b>ghi</span> | PASS | PASS | PASS | FAIL | FAIL | — |
| delete at <div class="pre">abc</div><span style="white-space:pre-line"><b>[]def\n</b>ghi</span> | PASS | PASS | PASS | FAIL | FAIL | — |
| delete at <div style="white-space:pre">abc</div><span style="white-space:pre-line"><b>[]def<br></b>ghi</span> | PASS | PASS | PASS | FAIL | FAIL | — |
| delete at <div style="white-space:pre">abc</div><span class="preLine"><b>[]def<br></b>ghi</span> | PASS | PASS | PASS | FAIL | FAIL | — |
| delete at <div class="pre">abc</div><span style="white-space:pre-line"><b>[]def<br></b>ghi</span> | PASS | PASS | PASS | FAIL | FAIL | — |
| delete at <div style="white-space:pre">abc</div><span style="white-space:pre-line"><b>[]def\nghi</b>jkl</span> | PASS | PASS | PASS | FAIL | FAIL | — |
| delete at <div style="white-space:pre">abc</div><span class="preLine"><b>[]def\nghi</b>jkl</span> | PASS | PASS | PASS | FAIL | FAIL | — |
| delete at <div class="pre">abc</div><span style="white-space:pre-line"><b>[]def\nghi</b>jkl</span> | PASS | PASS | PASS | FAIL | FAIL | — |
| delete at <div style="white-space:pre">abc</div><span style="white-space:pre-line"><b>[]def<br>ghi</b>jkl</span> | PASS | PASS | PASS | FAIL | FAIL | — |
| delete at <div style="white-space:pre">abc</div><span class="preLine"><b>[]def<br>ghi</b>jkl</span> | PASS | PASS | PASS | FAIL | FAIL | — |
| delete at <div class="pre">abc</div><span style="white-space:pre-line"><b>[]def<br>ghi</b>jkl</span> | PASS | PASS | PASS | FAIL | FAIL | — |