How to handle leading/trailing whitespace?

[travisleithead]

Copied from: https://github.com/MicrosoftEdge/MSEdgeExplainers/issues/373

How should white space collapsing behavior (like collapsing trailing or leading whitespaces around a line break) be handled? CSS uses white-space and related properties. How might these configuration options be applied to this API?

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Current behavior appears to be:

• Newlines are preserved
• Spaces are preserved
• Tabs are collapsed
• End-of-line spaces are preserved