Re: [bug] blame duplicates trailing ">" in mailmapped emails

> > We could also go as far as saying that map_user would _always_ terminate
> > in this way (i.e., the caller gets a munged result, whether we found
> > anything or not). Then internally, map_user could be simplified to stop
> > worrying about making a temporary copy in mailbuf. And callers could
> > simply call map_user without worrying about branching on whether it
> > found anything or not.
> 
> I thought about it, but such a change needs to audit all the call sites
> that assumes the promise original map_user() used to make before it was
> broken. If we return 0 to the caller, the caller does not have to worry
> about map_user() munging the buffer it lent to it.
> 
> It might be a worthwhile thing to do. I dunno; I didn't look into it.