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AI assistance: OpenAI Codex was used for investigation, implementation, regression tests, and automated validation.
FanWu-ai
marked this pull request as ready for review
October 11, 2026 17:04
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The ANSI parser inserts no spacing for CUF sequences with an omitted or zero count. Both
a\x1b[Cbanda\x1b[0Cbtherefore render asabrather thana b, contrary to the command's one-column default.Apply that default only in cursor-forward handling. Keep numeric parsing and SGR reset semantics unchanged. Tests cover both CSI encodings, omitted/zero/padded-zero/explicit counts, and color preservation/reset.
Validation: pristine suite 156 passed; 12 regression cases fail on original source; final full suite 176 passed. All configured Ruff, format, typos, three-platform Mypy and pinned hooks pass, as do package builds and strict metadata checks. Prepared with AI assistance. Hosted matrix results remain pending.