On Tue, Aug 18 2015, Peter Münster wrote:
What could I do please to solve this problem?
This is the typical way it works:
1. start the Lisp process with M-x slime. 2. load the source file into the Lisp process with slime-load-file or a similar command. 3. now the Lisp process should know where the definitions are located (SBCL and the "better" implementations at least do) 4. M-. also needs to know the package where to search for the symbol; by default that's derived from the nearest in-package form, but if there isn't any in-package in the current buffer then COMMON-LISP-USER will be used. It's also possibly to explicitly specify the package e.g. with C-u M-. "my-package:write-table" RET
If you still have problems, tell us how your setup looks like: which Lisp implementation you use, how you load the code, the output in the *inferior-lisp* buffer etc. so that we can reproduce the problem.
Helmut