When using DIRECTORY, the proper pattern to use to get all files is #p"*" and not #p"*.*" on CLISP and GCL. This is the opposite of other CL implementations, that match everything with #p"*.*" and only files without extension with #p"*", which seems more in line with the CLHS, though counter-intuitive wrt to POSIX. Now the proper pattern to match all files with TRANSLATE-PATHNAME and with logical pathnames is still #p"*.*" or #p"*.*.*". Therefore, we introduce a new parameter *wild-file-for-directory*, as distinguished from *wild-file*, for notable use with DIRECTORY-FILES.
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