New comment by nmeum on mblaze repository

https://github.com/leahneukirchen/mblaze/pull/173#issuecomment-606145682

Comment:
The more compilated version which also handles a missing description in `local-mailbox` would be:

```shell
addr=$(maddr -a -h to:cc:bcc: "$1" | grepmine | head -n 1)
if [ -n "$addr" ]; then
	desc=$(maddr -d -h "local-mailbox" "$MBLAZE/profile")
	if [ -n "$desc" ]; then
		from=$(printf "%s <%s>" "$desc" "$addr")
	else
		from=$addr
	fi
else
	from=$(mhdr -h local-mailbox "$MBLAZE/profile")
fi
```