Improve signaling of deprecated code

Description

Based on discussion in BIT-1411, we need a better mechanism for deprecating code. In particular, Vern suggested the attribute &deprecate=expr syntax where expr would be an expression that evaluates at the point of use of the deprecated construct and would show the user a hint on how to migrate.

Environment

None

Assignee

Unassigned

Reporter

Matthias Vallentin

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Components

Affects versions

Priority

Normal
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