For now I renounced to extract numbers from my bytevectors The culprit is: #vu8(232 3 0 0)
There are 27 lines in the sheet, so this bytevector should represent 27, somehow. The good bytevector is: #vu8(5 0) In fact, the sheet has 5 columns On another sheet in the same file, this is what happens: (#vu8(118 0 0 0) #vu8(17 0)) The sheet has 17 columns indeed. And it has 23 rows :-/ This is where I'm at, right now I even made a commit out of this https://gitlab.com/humanitiesNerd/guile-freexl/commit/bddc8bb33c5dc5fbe5acf4b954dfb7d42453f956
