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Define `null` as an invalid value for attributes and declare attempts to set `null` as undefined behavior (#992)

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Armin Ruech 2020-09-25 11:49:15 +02:00 committed by Josh Suereth
parent a59a1b218c
commit aa5effe43c
1 changed files with 4 additions and 4 deletions
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specification/common/common.md
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@ -25,10 +25,10 @@ Attributes SHOULD preserve the order in which they're set.
Attribute values expressing a numerical value of zero, an empty string, or an
empty array are considered meaningful and MUST be stored and passed on to
processors / exporters. Attribute values of `null` are considered to be not set
and get discarded as if that `Attribute` has never been created.
As an exception to this, if overwriting of values is supported, this results in
removing the attribute.
processors / exporters.
Attribute values of `null` are not valid and attempting to set a `null` value is
undefined behavior.
`null` values within arrays MUST be preserved as-is (i.e., passed on to span
processors / exporters as `null`). If exporters do not support exporting `null`