//			significantly more expensive.
//		Sets -cover.
//	-coverpkg pattern1,pattern2,pattern3
//		For a build that targets package 'main' (e.g. building a Go
//		executable), apply coverage analysis to each package matching
//		the patterns. The default is to apply coverage analysis to
//		packages in the main Go module. See 'go help packages' for a
//		description of package patterns.  Sets -cover.
//	-v

	files, _, err := resolveEmbed(dir, patterns)
	return files, err
}

// resolveEmbed resolves //go:embed patterns to precise file lists.
// It sets files to the list of unique files matched (for go list),
// and it sets pmap to the more precise mapping from
// patterns to files.
func resolveEmbed(pkgdir string, patterns []string) (files []string, pmap map[string][]string, err error) {
	var pattern string

		// There is one exception: runtime/cgo's job is to bridge the
		// cgo and non-cgo worlds, so it necessarily has files in both.
		// In that case gcc only gets the gcc_* files.
		var gccfiles []string
		gccfiles = append(gccfiles, cfiles...)
		cfiles = nil
		if p.Standard && p.ImportPath == "runtime/cgo" {
			filter := func(files, nongcc, gcc []string) ([]string, []string) {