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<a href="https://gitlab.com/dueno">Daiki Ueno</a>
commented on a
<a href="https://gitlab.com/gnutls/gnutls/-/merge_requests/1199#note_305086468">discussion</a>:
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<p dir="auto">Although I share your concern (as I see <code>P11_KIT_FUTURE_UNSTABLE_API</code> defined almost everywhere), I don't think it would cause further problems if we provide a proper deprecation mechanism for old functions:</p>
<ul dir="auto">
<li>if we remove an API (the macro definition in the header), the application wouldn't compile; so they will notice the API is not available and maybe deprecated</li>
<li>if we remove an underlying implementation, the application <em>can</em> get a dedicated error code upon lookup (not implemented yet); so the user could notice that the application is using an unavailable/deprecated API in a safe manner</li>
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<p dir="auto">If we add a new API, we can always choose a new name, so not to break the existing convention; it would probably be sensible that the initial function name is chosen to be obscure, so it doesn't clash with the final function name</p>
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