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Duncan Coutts authored
I realised when I started to document it that the behaviour was not terribly consistent or sensible. The meaning now is: The limitation is that * wildcards are only allowed in place of the file name, not in the directory name or file extension. In particular, wildcards do not include directories contents recursively. Furthermore, if a wildcard is used it must be used with an extension, so "data-files: data/*" is not allowed. When matching a wildcard plus extension, a file's full extension must match exactly, so "*.gz" matches "foo.gz" but not "foo.tar.gz". The reason for providing only a very limited form of wildcard is to concisely express the common case of a large number of related files of the same file type without making it too easy to accidentally include unwanted files.
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