Alas, if you don't provide this argument, convert-tool (and presumably the convert plugin, which shares this code) will just crash with a double-free when it encounters such a name.
Looks like I need to use the optional convert-tool argument
"alt_hierarchy_char=-" to get the desired effect. Looking at the source,
this is used when the folder name is converted from source format to
destination format and the name contains the hierarchy separator from the
destination format.
- [Dovecot] Converting mbox files with dots in names to Maild... Kenneth Porter
- Re: [Dovecot] Converting mbox files with dots in names... Kenneth Porter
- Re: [Dovecot] Converting mbox files with dots in n... Kenneth Porter
- Re: [Dovecot] Converting mbox files with dots in names... Timo Sirainen
- Re: [Dovecot] Converting mbox files with dots in n... Kenneth Porter
- Re: [Dovecot] Converting mbox files with dots ... Timo Sirainen