Name          string   // package name
	ImportComment string   // path in import comment on package statement
	Doc           string   // documentation synopsis
	ImportPath    string   // import path of package ("" if unknown)
	Root          string   // root of Go tree where this package lives
	SrcRoot       string   // package source root directory ("" if unknown)
	PkgRoot       string   // package install root directory ("" if unknown)

		}
	}
	return filter, nil
}

var packageRE = regexp.MustCompile(`(?m)^package ([\p{Lu}\p{Ll}\w]+)`)

func getPackageNameFromSource(fn string) (string, error) {
	data, err := os.ReadFile(fn)
	if err != nil {
		return "", err
	}
	pkgname := packageRE.FindStringSubmatch(string(data))
	if pkgname == nil {
		return "", fmt.Errorf("cannot find package name in %s", fn)
	}
	return pkgname[1], nil
}

requested benchmark results or verbose logging. After the package
tests for all of the listed packages finish, and their output is
printed, go test prints a final 'FAIL' status if any package test
has failed.

In package list mode only, go test caches successful package test
results to avoid unnecessary repeated running of tests. When the
result of a test can be recovered from the cache, go test will

// imported by another package. When we have finished identifying the imports of
// a package, we add the test for that package if it is needed. A test may be
// needed if:
// 	- the package matches a root pattern and tests of the roots were requested, or
// 	- the package is in the main module and the "all" pattern is requested
// 	  (because the "all" pattern includes the dependencies of tests in the main
// 	  module), or

// packages:
//
//  1. For each package marked with pkgInAll, the module path that provided that
//     package is included as a root.
//  2. For all packages, the module that provided that package either remains
//     selected at the same version or is upgraded by the dependencies of a
//     root.
//
// If any module that provided a package has been upgraded above its previous

====

Kotlin extension functions are package-level functions and you can learn how to locate the name of the type declaring a given Kotlin extension in the link:{kotlin-reference}java-to-kotlin-interop.html#package-level-functions[Package-Level Functions] section of the Kotlin reference documentation.

	// dir = full path to pkg.
	dir := pathf("%s/src/%s", goroot, pkg)
	name := filepath.Base(dir)

	// ispkg predicts whether the package should be linked as a binary, based
	// on the name. There should be no "main" packages in vendor, since
	// 'go mod vendor' will only copy imported packages there.
	ispkg := !strings.HasPrefix(pkg, "cmd/") || strings.Contains(pkg, "/internal/") || strings.Contains(pkg, "/vendor/")

				// modules, the packages in the "std" module have no import-path prefix.
				//
				// Modules named "std" outside of GOROOT/src do not receive this special
				// treatment, so it is possible to run 'go test .' in other GOROOTs to
				// test individual packages using a combination of the modified package
				// and the ordinary standard library.

		{`package b1; var _ = 0`, `0`, `int`, `0`},
		{`package b2; var _ = 'A'`, `'A'`, `rune`, `65`},
		{`package b3; var _ = 0.`, `0.`, `float64`, `0`},
		{`package b4; var _ = 0i`, `0i`, `complex128`, `(0 + 0i)`},
		{`package b5; var _ = "foo"`, `"foo"`, `string`, `"foo"`},

		{`package c0a; var _ = bool(false)`, `false`, `bool`, `false`},
		{`package c0b; var _ = bool(false)`, `bool(false)`, `bool`, `false`},

		{`package b1; var _ = 0`, `0`, `int`, `0`},
		{`package b2; var _ = 'A'`, `'A'`, `rune`, `65`},
		{`package b3; var _ = 0.`, `0.`, `float64`, `0`},
		{`package b4; var _ = 0i`, `0i`, `complex128`, `(0 + 0i)`},
		{`package b5; var _ = "foo"`, `"foo"`, `string`, `"foo"`},

		{`package c0a; var _ = bool(false)`, `false`, `bool`, `false`},
		{`package c0b; var _ = bool(false)`, `bool(false)`, `bool`, `false`},