Re: [PATCH] fast-export: fix anonymized tag using original length

> From: Tal Kelrich <hasturkun@gmail.com>
>
> Commit 7f4075949686 (fast-export: tighten anonymize_mem() interface to
> handle only strings, 2020-06-23) changed the interface used in anonymizing
> strings, but failed to update the size of annotated tag messages to match
> the new anonymized string.
>
> As a result, exporting tags having messages longer than 13 characters
> would create output that couldn't be parsed by fast-import,
> as the data length indicated was larger than the data output.
>
> Reset the message size when anonymizing, and add a tag with a "long"
> message to the test.
>
> Signed-off-by: Tal Kelrich <hasturkun@gmail.com>
> ---
>     fast-export: fix anonymized tag using original length
>     
>     Fixes an issue with fast-export anonymization, where any original
>     annotated tag message longer than 13 characters would make the output
>     unimportable by fast-import (as the data length indicated the original
>     length).
>     
>     This also resolves a more minor issue, where if the original message was
>     short, the anonymized tag message would be truncated.