The following script asserts on the last line when it shouldn't, caused by rB456e3f00e007dbdeecb8a967ded9b7f4b2bc2969
import bpy
a = bpy.data.meshes.new("A")
b = bpy.data.meshes.new(" F A")
a.use_fake_user = True
bpy.data.meshes.remove(b)
b = bpy.data.meshes.get(" F A")
assert(b is None) # This asserts when