[basemap] hammer projection and bug ?

Dear matplotlib developpers,

I use matplotlib for several years and I’m very satisfied with the it.
I started using the basemap package a few days ago, and I noticed something that looks like a bug :

With the Mollweide projection (and others too), when specifying rsphere=1.0, the coastlines is not drawn in the
left part of the plot. With rsphere=2.0 the hidden part is smaller, and with rsphere=10.0 it is not visible.

I’m using matplotlib 1.0.0 and basemap 1.0
To reproduce the bug :

m = Basemap(projection=‘moll’,lon_0=180,rsphere=1.0)
m.drawcoastlines(linewidth=0.5, color=‘grey’) # draw discrete coastlines
m.drawmapboundary() # draw a line around the map region

Finally the hammer projection is missing for me :

In [5]: m=Basemap(projection=‘hammer’,lon_0=180)


ValueError Traceback (most recent call last)

/home/nat/pkg/python-matplotlib-basemap/ in ()

/usr/lib/python2.7/site-packages/mpl_toolkits/basemap/init.pyc in init(self, llcrnrlon, llcrnrlat, urcrnrlon, urcrnrlat, llcrnrx, llcrnry, urcrnrx, urcrnry, width, height, projection, resolution, area_thresh, rsphere, lat_ts, lat_1, lat_2, lat_0, lon_0, lon_1, lon_2, no_rot, suppress_ticks, satellite_height, boundinglat, fix_aspect, anchor, ax)
698 print ‘warning: width and height keywords ignored for %s projection’ % _projnames[self.projection]
699 else:
–> 700 raise ValueError(_unsupported_projection % projection)
702 # initialize proj4

ValueError: ‘hammer’ is an unsupported projection.
The supported projections are:
aeqd Azimuthal Equidistant
poly Polyconic
gnom Gnomonic
moll Mollweide
tmerc Transverse Mercator
nplaea North-Polar Lambert Azimuthal
gall Gall Stereographic Cylindrical
mill Miller Cylindrical
merc Mercator
stere Stereographic
npstere North-Polar Stereographic
geos Geostationary
nsper Near-Sided Perspective
vandg van der Grinten
laea Lambert Azimuthal Equal Area
mbtfpq McBryde-Thomas Flat-Polar Quartic
sinu Sinusoidal
spstere South-Polar Stereographic
lcc Lambert Conformal
npaeqd North-Polar Azimuthal Equidistant
eqdc Equidistant Conic
cyl Cylindrical Equidistant
omerc Oblique Mercator
aea Albers Equal Area
spaeqd South-Polar Azimuthal Equidistant
ortho Orthographic
cass Cassini-Soldner
splaea South-Polar Lambert Azimuthal
robin Robinson