Module warn 

What a parse has to say about declarations that still work but should not be used.

The reference implementation’s half of what usage-argv reports from its static tables. Both answer the same question — which deprecated declarations did this command line use — and the rule they answer it by is written down at https://usage.jdx.dev/spec/argv, not in either crate. Neither can depend on the other: usage-argv has no dependencies at all, on purpose.

Nothing here prints. A resolution reports, as configuration resolution does, so a CLI that queues its deprecations until its logging is up can have them as values.

Structs

Warning

One thing a command line used that its own spec says not to use any more.

Enums

WarningKind

The kinds of deprecation a parse can run into.

Functions

compare

Order two versions, or None if either is not a version this can read.

render

Everything, one line each, in the order they were collected.

retain_reached

Drop the warnings a CLI at version has not reached yet.

version_reaches

Whether a CLI at current has reached the release a deprecation starts warning at.