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Fix #3586: the PDF pre-open scan reads a file dense with stream keywords in linear time

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Each `stream` keyword walked back up to 64 KiB through every dictionary before it, so 1 MiB of `<</A <</B 1>> >>stream` took minutes. A walk back now stops where the previous keyword's walk began, and a stream without a Length shares the search for the next `endstream`.
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Taha-Mahmoodi
2026-10-24 07:35:07 +07:00
committed by bflatastic
parent cdd3b949ba
commit ea55f89c24
2 changed files with 37 additions and 8 deletions
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docs/gaps.md
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@@ -605,6 +605,7 @@ trap, and the defaults (0.25 pt, 100%, 40%) are VectorCraft's own, the pages giv
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| 2026-10-24 | minor | G4: images in OpenType SVG glyph documents draw, export and outline with the glyph; colour fonts are done but for CPAL palette variables; estimate unchanged. |
| 2026-10-24 | minor | G4: bitmap glyphs (emoji) go with type that effects reshape, into Expand Appearance, envelope Expand and EMF/WMF export, as images that hold their own pixels until a document takes them in; estimate unchanged. |
| 2026-10-24 | minor | G10: Fix #3586: the PDF pre-open scan reads a file dense with `stream` keywords in linear time; each keyword walked back up to 64 KiB through every dictionary before it, so 1 MiB of `<</A <</B 1>> >>stream` took minutes. No entry closed, estimates unchanged. |
| 2026-10-24 | minor | Ranked table: one row each for G2 and G13 (doc merges had left G2 twice and G13 three times, at three hour estimates); G13 keeps the newest, 13–23 h; scores and hours unchanged |
| 2026-10-23 | minor | G5: Select › Start Global Edit on paths, compound paths and symbol instances (shape match, Appearance and Size, artboard range and canvas, proportional edits as one undo step; #3521); Global Edit of similar groups and Shift-click exclusion remain. Estimate unchanged. |
| 2026-10-23 | minor | G5: symbol libraries (Window › Symbol Libraries, the Symbols panel's Symbol Libraries Menu, Other Library…, Save Symbols, User Defined, adding and placing library symbols as one undo step; `crates/engine/src/tests_symbollib.rs`, `crates/ui-egui/src/panels/tests_symbol_libraries.rs`); brush libraries remain. Estimate unchanged. |