Agenda: Catch error when no mark is set
Bernt Hansen writes:
> When org-agenda-diary-file is set to a special org file for diary
> entries and transient mark mode is enabled 'i' in the agenda fails
> with 'mark is not active now'
>
> My workaround for this is C-SPC to set the mark anywhere legal in the
> agenda display (ie not on the first or last line) and then hit 'i'
> to insert my diary entries.