Explainer for Multi-Range Selection in Chromium#1311
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sambandaru wants to merge 2 commits intoMicrosoftEdge:mainfrom
Open
Explainer for Multi-Range Selection in Chromium#1311sambandaru wants to merge 2 commits intoMicrosoftEdge:mainfrom
sambandaru wants to merge 2 commits intoMicrosoftEdge:mainfrom
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utpathak
reviewed
Apr 30, 2026
| ``` | ||
| "The quick brown fox jumps over the lazy dog" | ||
| ^^^^^ ^^^ ^^^^ | ||
| Range 1 Range 2 Range 3 |
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Range 2 visually shows "jumps" although the explainer says to copy "fox"
utpathak
reviewed
Apr 30, 2026
| Range 1 Range 2 Range 3 | ||
| ``` | ||
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| User selects "quick", Ctrl+clicks "fox", Ctrl+clicks "lazy". Pressing Ctrl+C copies "quickfoxlazy". |
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Is having no separator a correct behavior. Firefox uses no separator but is it really what users want? Is there any way to track the exact ask?
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There should be a delimiter - a space or a newline. Fixing.
utpathak
reviewed
Apr 30, 2026
| ### 6.2 Unchanged APIs | ||
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| - `collapse()`, `collapseToStart()`, `collapseToEnd()`: collapse to single caret, removing all other ranges | ||
| - `extend()`: extends the focused (most recently added) range only |
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What happens if extend() is called with a point that falls inside a different range? Does it merge? Does it error?
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Adds an explainer proposing multi-range selection support in Chromium's Selection API. Chrome currently follows the W3C spec's single-range restriction (addRange() no-ops when a range exists), while Firefox has shipped multi-range for 20+ years. This proposes aligning Chromium with Firefox and updating the spec to allow addRange() to accumulate disjoint ranges, enabling Ctrl+Click discontinuous text selection.