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fix: support hexadecimal escapes in template strings - #38
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This was referenced Oct 23, 2026
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Flint chat templates fail before inference because the lexer rejects
\xHHstring escapes. Decode exactly two ASCII hexadecimal digits as a Unicode character, preserve literal escaped backslashes and source positions, and reject malformed/truncated escapes withLexerException.Adds lexer regressions plus the exact Flint template and seven prompts captured from official llama.cpp b11836, covering chat, NUL/protocol-marker sanitization and tool-result history. Refs leehack/llamadart#1335; runtime adoption and the later dependency-release handoff remain separate.
Validation: VM 1,207 pass / 11 skip; Chrome 1,098 pass / 11 skip; coverage 91.85%; analysis/format clean; publish dry run 0 warnings. Current llamadart template suites: 1,329 pass / 74 skip. With a local dependency override and experimental text runtime, real Flint
engine.create()completes with separate reasoning/content. Independent review of exact head 10df8d0 found no blocking issues; the base lexer fails all seven Flint fixture cases.