[MSHARED-815] Sanitize newlines in manifest entry values#363
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Newlines (\\n, \\r\\n, \\r) in manifest entry values can produce invalid MANIFEST.MF files, particularly when empty lines create section separators. Replace all newline characters with spaces before storing values in manifest attributes. Applies sanitization in both addManifestAttribute() (for main manifest attributes) and the manifest section entries loop. Fixes apache#362
elharo
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Simplified the addManifestAttribute method by removing unnecessary conditional checks for empty values.
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Fixes #362
Newlines (\n, \r\n, \r) in manifest entry values can produce invalid
MANIFEST.MF files, particularly when empty lines create section separators.
Replace all newline characters with spaces before storing values in manifest
attributes.
Applies sanitization in both
addManifestAttribute()(for main manifestattributes) and the manifest section entries loop.
Includes a test verifying newlines are replaced via
getManifest()(in-memory) and a test verifying the JAR output with empty-line values
remains readable (no manifest corruption).