Use a phrase with an id inside the header.
Using an anchor before the heading was causing problems when the heading
wasn't inside a section.
We can't use an anchor inside the header when it links to itself, as it
messes up getting the title for the link. Using an empty phrase means
that it will just get the empty title for the phrase. Thanks to John
Maddock for the idea.
This does generate slightly odd markup. We could possibly use the old
style markup whenever section depth > 0, since we would know that we're
inside a section, but that seems like an unnecessary complication.
[SVN r72723]
Imports were failing because doc info expected values. The process_state
stuff is too fragile, so instead just process the contents of a
conditional phrase and discard them afterwards. Still suppresses all
elements.
[SVN r71062]
This is more consistent than it is at the moment. For the __FILENAME__
macro, use the path relative to the original file or the location last
matched on the include path. This ensures that the macro is consistent
no matter which directory you call quickbook from.
Also enable `__FILENAME__` in debug mode - so I can test this.
[SVN r70230]
