Abimael MartellandClaude Opus 4.6
6c005ef4c2
* fix(fonts): CID-as-Unicode passthrough and subscript/superscript merging Add smart CID-as-Unicode passthrough for Identity-H fonts without ToUnicode maps. Uses /W array median CID heuristic to distinguish Unicode-CID PDFs (Chromium-generated) from GID-based subsets. Add merge_subscript_items() pass that merges small-font items (<75% of dominant font size, ≤4 chars, tightly adjacent) into parent items. Fixes chemical formulas (NH3, H2O, KClO3), footnote references, and subscript notation (vf, Hfg, m3/kg) that were previously orphaned as separate text items. Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com> * fix(subscripts): restrict merge to purely numeric text only Tighten subscript merging to only merge items containing ASCII digits (0-9). This avoids false positives with ordinal indicators (º), letter subscripts (sol, vf), and small bullet characters (▶) that caused table restructuring regressions. Numeric-only keeps the primary wins: chemical formulas (NH3, H2O), footnote references, and unit notation (m2, m3). Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com> * fix(subscripts): restrict merge to parent text ending with a letter Only merge numeric subscripts when the parent item's text ends with an alphabetic character. Prevents false merges like "33" + "1" in fractions (33 1/3%), table credit numbers after spaces, and footnote refs after punctuation (land.1 → land. 1). Chemical formulas (NH3, H2O, KClO3) still merge correctly since parent ends with a letter. Reduces pdf-eval regressions from 13 to 2 (both are correct reversions of over-aggressive footnote merging from the prior commit). Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com> --------- Co-authored-by: Claude Opus 4.6 <noreply@anthropic.com>