Re: [PATCH v2 2/3] send-email: handle multiple Cc addresses when reading mbox message

> When git format-patch is given multiple --cc arguments, it generates a
> Cc header that looks like:
> 
>  Cc: first@example.com,
>      second@example.com,
>      third@example.com
> 
> Before this commit, send-email was unable to handle such a message as it
> did not handle folded header lines, nor multiple recipients in a Cc
> line.
> 
> This patch:
> 
> - Unfolds header lines by pre-processing the header before extracting
>   any of its fields.
> 
> - Handles Cc lines with multiple recipients.
> 
> - Adds use of Mail::Address if available for splitting Cc line and
>   the "Who should the emails be sent to?" prompt", with fall back to
>   existing split_addrs() function.