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Merge pull request #5698 from Piohrun/fix/jbig2-dictionary-any-route

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fix(redact): a shared JBIG2 dictionary leaves with whatever used it, by any route
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BFlat authored and GitHub committed 2026-11-10 14:24:09 +07:00
2 parents 45d51d8c46 ed6af22b85
commit 2b46f8bf8c
12 files changed
+1896 -151
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parity/acrobat-features.toml
+2 -2
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@@ -5943,8 +5943,8 @@ milestone = "M8"
status = "shipped"
commands = ["redact.apply"]
tools = ["redact_apply"]
evidence = ["crates/redact/src/tests.rs::images_are_removed_or_have_their_pixels_cleared", "crates/redact/src/tests.rs::redaction_clears_pixels_intersected_without_covering_their_centres", "crates/redact/src/tests.rs::a_fax_image_has_its_covered_pixels_cleared_instead_of_being_removed", "crates/redact/src/tests.rs::group_3_on_bytes_is_removed_whole_and_other_fax_images_cleared", "crates/redact/src/tests.rs::an_image_whose_predictor_is_given_by_reference_has_the_covered_pixel_cleared", "crates/redact/src/tests.rs::a_jbig2_image_has_its_covered_pixels_cleared_instead_of_being_removed", "crates/redact/src/tests.rs::a_jbig2_image_that_cannot_be_cleared_for_certain_is_removed_whole", "crates/redact/src/tests.rs::a_redacted_jbig2_scan_keeps_neither_its_code_nor_its_globals", "crates/redact/src/tests.rs::a_cleared_black_and_white_scan_is_stored_as_group_4", "crates/redact/src/tests.rs::globals_a_redacted_jbig2_image_shares_with_another_page_leave_the_file"]
notes = "intersected pixel footprints are cleared conservatively in a copy, CCITT fax and JBIG2 images (scans stored as Group 4 or JBIG2, with their /JBIG2Globals) included; DCT/JPX images, Group 3 on bytes (which the bootstrap renderer may draw as other rows than the decoder reads), and a JBIG2 image whose page isn't its size, removed whole. The copy is Flate, or for a one-bit image of one component Group 4, or JBIG2 when it was JBIG2, whichever is smallest as stored, and refers to no globals; every other image using a redacted image's globals is stored again without them (Flate, Group 4 or JBIG2, whichever is smallest), so they leave the file (one that can't be decoded refuses the redaction)"
evidence = ["crates/redact/src/tests.rs::images_are_removed_or_have_their_pixels_cleared", "crates/redact/src/tests.rs::a_redacted_scans_shared_jbig2_dictionary_leaves_the_file", "crates/redact/src/tests.rs::redaction_clears_pixels_intersected_without_covering_their_centres", "crates/redact/src/tests.rs::a_fax_image_has_its_covered_pixels_cleared_instead_of_being_removed", "crates/redact/src/tests.rs::group_3_on_bytes_is_removed_whole_and_other_fax_images_cleared", "crates/redact/src/tests.rs::an_image_whose_predictor_is_given_by_reference_has_the_covered_pixel_cleared", "crates/redact/src/tests.rs::a_jbig2_image_has_its_covered_pixels_cleared_instead_of_being_removed", "crates/redact/src/tests.rs::a_jbig2_image_that_cannot_be_cleared_for_certain_is_removed_whole", "crates/redact/src/tests.rs::a_redacted_jbig2_scan_keeps_neither_its_code_nor_its_globals", "crates/redact/src/tests.rs::a_cleared_black_and_white_scan_is_stored_as_group_4", "crates/redact/src/tests.rs::globals_a_redacted_jbig2_image_shares_with_another_page_leave_the_file"]
notes = "intersected pixel footprints are cleared conservatively in a copy, CCITT fax and JBIG2 images (scans stored as Group 4 or JBIG2, with their /JBIG2Globals) included; DCT/JPX images, Group 3 on bytes (which the bootstrap renderer may draw as other rows than the decoder reads), and a JBIG2 image whose page isn't its size, removed whole. The copy is Flate, or for a one-bit image of one component Group 4, or JBIG2 when it was JBIG2, whichever is smallest as stored, and refers to no globals; whatever left the file takes its globals with it: what else names them, or an exact copy, is stored again without them (Flate, Group 4 or JBIG2, whichever is smallest), and apply refuses when one can't be. Not found: a dictionary holding the same shapes in other bytes. An image that hasn't left the file keeps its globals with its pixels: one another page draws, or one a pattern, soft mask or structure element refers to"
[[feature]]
id = "protect.redact-vectors"