uiop:directory-files

(uiop:directory-files pathspec &optional pattern)

The non-directory entries of a directory: (directory "<pathspec>/*.*") with the subdirectories dropped. pathspec names the directory itself (with or without a trailing /) -- the wildcard is supplied here, so this is the "just list it" spelling.

pattern is UIOP's own optional second argument, the namestring of a name-and-type wildcard. It is appended to the directory and matched exactly as directory would match it (* any sequence, ? one character), so (uiop:directory-files "db/" "*.up.sql") lists only the up-migrations. Omitting it lists everything. A pattern carrying a DIRECTORY component is an error, as it is in real UIOP -- the directory to scan is the first argument's job.

Backend support

All four backends, over the same one primitive directory uses.