Hi,

I really like org-capture, and especially the "hierarchical" interface
for selecting possible capture templates, but I think it needs to be
extended slightly so that it can be used to archive anything.

Some of the things I would like to do when capturing are:
 1. Just jump to some location without inserting anything so that I can
    edit things by myself (for instance, jump to the location where my
    org-capture-template is defined to manually add new templates)
 2. Copying some file to some location (no org involved)
 3. Extract some files from my mail to attach them to some org item
 4. Insert some parametrized code at point (e.g. for repetitive
    projects, like planning a business trip, I would like to insert
    a predefined project at point, so I don't have to do all the 
    planning every time I do it)

Item 1. is feasible if I remember to use C-u before calling
org-template, but this is a ugly workaround. Another way that I tried
was to using "" as a template with an unnarrowed buffer, but this
triggers a default template instead.

My first patch just extends org-capture to allow empty template, using a
new entry type, 'empty.

The second allows to use functions to define template. Together with an
empty template, it should allow implementing my 2, and may be useful to
implement 3 and 4.

I don't think these patches will be definitive; I mostly would like to
discuss org-capture evolution with org-mode gurus ;)

Regards
Matthieu