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Grzegorz MartensandClaude Opus 5.5
7cea6dfead
`Reads::decode` and the Type 3 glyph-box read took any failed read, with nothing left of the allowance after it, for one the allowance refused. The Thai edit refuses on what the allowance itself counts (`DecodeBudget::refused`), so the two could disagree: once the edit's allowance was spent to the byte, an empty stream behind a filter nothing decodes, which is unread with any allowance, made a font's metrics read past it with no refusal counted. The edit then skipped that font of the face and went through without it, which its refusal is there to prevent. Both now take a read as refused only when `DecodeBudget::refused` grew during it, so `Metrics::past_allowance` is set exactly when the allowance counted a refusal, as its doc now says. Tests: - `an_empty_stream_reads_with_nothing_left` adds such a stream: it isn't past the allowance, and the flag agrees with the count in each case. - `a_type3_description_unread_on_its_own_is_not_past_the_allowance`: the same for a glyph description after one that spends the allowance to the byte; a description with data after it is still refused. - `a_font_of_the_face_unread_on_its_own_once_the_allowance_is_spent_still_refuses_the_edit`: the edit above is refused, where it went through. Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com> Claude-Session: https://claude.ai/code/session_01AmsdeUCdTaD72jkDw2pJKY