"application/x-msdownload",
				"application/x-ms-installer",
				"application/x-msdownload;format=pe",
				"application/x-msdownload;format=pe32",
				"application/x-msdownload;format=pe64",
				"application/x-msdownload;format=pe-itanium",
				"application/x-msdownload;format=pe-armLE",
				"application/x-msdownload;format=pe-arm7",
				"application/x-msmediaview",
				"application/x-msmetafile",
				"application/x-msmoney",

    <!-- The is the base QuickTime container -->
    <!-- QuickTime video, and all MP4 formats, are based on it -->
    <acronym>QTFF</acronym>
    <_comment>QuickTime container format</_comment>
  </mime-type>
  <mime-type type="application/mp4">
    <!-- Arbitrary data stored in a MP4 container -->
    <_comment>MP4 container format</_comment>
    <glob pattern="*.mp4s"/>
    <sub-class-of type="application/quicktime" />

	FormatGNU

	// Schily's tar format, which is incompatible with USTAR.
	// This does not cover STAR extensions to the PAX format; these fall under
	// the PAX format.
	formatSTAR

	formatMax
)

func (f Format) has(f2 Format) bool   { return f&f2 != 0 }
func (f *Format) mayBe(f2 Format)     { *f |= f2 }
func (f *Format) mayOnlyBe(f2 Format) { *f &= f2 }
func (f *Format) mustNotBe(f2 Format) { *f &^= f2 }

# Run manually to reformat a file:
# clang-format -i --style=file <file>
BasedOnStyle: Google

# Run manually to reformat a file:
# clang-format -i --style=file <file>
BasedOnStyle: Google

		formats: FormatUSTAR | FormatPAX | FormatGNU,
	}}

	for i, v := range vectors {
		formats, paxHdrs, err := v.header.allowedFormats()
		if formats != v.formats {
			t.Errorf("test %d, allowedFormats(): got %v, want %v", i, formats, v.formats)
		}
		if formats&FormatPAX > 0 && !maps.Equal(paxHdrs, v.paxHdrs) && !(len(paxHdrs) == 0 && len(v.paxHdrs) == 0) {

#### Archives and Compressed Files
- ZIP, TAR, GZ archives
- LHA compression format
- Nested archive extraction

#### Web and Markup
- HTML, XHTML with XPath support
- XML documents
- JSON and structured data

#### Media Files
- Audio formats (MP3, WAV, FLAC)
- Video formats (MP4, AVI, MOV)
- Metadata extraction from media files

## Architecture

### Multi-Module Structure

Russ Cox <******@****.***> 1410149331 -0400

			wantFormat.mayBe(FormatUSTAR) // PAX implies USTAR allowed too
		}
		format.mayOnlyBe(wantFormat) // Set union of formats allowed and format wanted
	}
	if format == FormatUnknown {
		switch h.Format {
		case FormatUSTAR:
			err = headerError{"Format specifies USTAR", whyNoUSTAR, whyOnlyPAX, whyOnlyGNU}
		case FormatPAX:
			err = headerError{"Format specifies PAX", whyNoPAX, whyOnlyGNU}
		case FormatGNU:

				return nil, err
			}

			// Sparse formats rely on being able to read from the logical data
			// section; there must be a preceding call to handleRegularFile.
			if err := tr.handleSparseFile(hdr, rawHdr); err != nil {
				return nil, err
			}

			// Set the final guess at the format.
			if format.has(FormatUSTAR) && format.has(FormatPAX) {
				format.mayOnlyBe(FormatUSTAR)
			}
			hdr.Format = format