What's the cause of these SBCL warnings?

[gheber]

For example, in 06_Algebras_and_bars.ipynb, In[2]:

SIMPLE-STYLE-WARNING: 
  #<SB-INT:SIMPLE-STYLE-WARNING "undefined ~(~A~): ~S" {10053B64C3}>

[gheber]

In this particular case, it appears to be caused by the ABSM macro. This expands straight into a call to MAKE-ABSM, and I'm not sure why this would produce the warning.

[gheber]

c57247e8

[gheber]

11_Simplicial_Groups.ipynb, In[37]:

SIMPLE-STYLE-WARNING: 
  #<SB-INT:SIMPLE-STYLE-WARNING "The variable ~S is defined but never used." {10067FD4A3}>

[gheber]

12_Fibrations.ipynb, In[25]:

SIMPLE-STYLE-WARNING: 
  #<SB-INT:SIMPLE-STYLE-WARNING "undefined ~(~A~): ~S" {1006D552E3}>

(Fixed in 756f333)

[gheber]

15_Loop_spaces_fibrations.ipynb, In[3]:

SIMPLE-STYLE-WARNING: 
  #<SB-INT:SIMPLE-STYLE-WARNING "undefined ~(~A~): ~S" {10054BB153}>

(Fixed in 756f333)

[gheber]

19_Simplicial_groups_fibration.ipynb, In[19]

SIMPLE-STYLE-WARNING: 
  #<SB-INT:SIMPLE-STYLE-WARNING "undefined ~(~A~): ~S" {10060395A3}>

Not (yet) fixed.