fix(config): strip ANSI escape sequences from model names#114
Merged
tjb-tech merged 1 commit intoHKUDS:mainfrom Apr 11, 2026
Merged
fix(config): strip ANSI escape sequences from model names#114tjb-tech merged 1 commit intoHKUDS:mainfrom
tjb-tech merged 1 commit intoHKUDS:mainfrom
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When setting ANTHROPIC_MODEL or OPENHARNESS_MODEL environment variables in terminals with formatting (e.g., bold text), ANSI escape sequences like \x1b[1m can be inadvertently included in the model name. This causes the API to receive an invalid model name like 'claude-opus-4-6[1m]' instead of 'claude-opus-4-6', resulting in a 404 error. Changes: - Add strip_ansi_escape_sequences() helper function - Apply stripping in _apply_env_overrides() for env vars - Apply stripping in merge_cli_overrides() for CLI args - Add comprehensive tests for ANSI escape handling Fixes HKUDS#113
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Summary
This PR fixes an issue where ANSI escape sequences in the
ANTHROPIC_MODELorOPENHARNESS_MODELenvironment variables would cause API requests to fail with 404 errors.Problem
When users set the model environment variable in a terminal with formatting (e.g., bold text), ANSI escape sequences like
\x1b[1m(bold) and\x1b[0m(reset) can be inadvertently included. This results in the API receiving an invalid model name likeclaude-opus-4-6[1m]instead ofclaude-opus-4-6.Fixes #113
Changes
strip_ansi_escape_sequences()helper function insettings.pyto remove ANSI escape codes from text_apply_env_overrides()to strip ANSI sequences from model environment variablesmerge_cli_overrides()to strip ANSI sequences from CLI--modelargumentTestAnsiEscapeSequencestest classTesting
Checklist