Question - no space in smtp-server-option

Hello Git community,

To send a formatted git patch as an email using git I use `git 
send-email`. Using another email address than my default one requires 
the 'smtp-server-option' to be set, and currently this flag doesn't care 
much for spaces. Is this desired?

Currently my gitconfig contains the following line:

	sendemail.smtpserveroption=-a<myaccount>

Whereas, the following results in an 'account' not found error:

	sendemail.smtpserveroption=-a <myaccount>

Further, the full account flag (--account) is not recognized by 
`send-email`. Could someone expand a bit on the reasoning behind this?

Regards,
Chris