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When the user pastes a long slash command like \`/goal <long prose>\` into
\`hermes chat\`, the input flows into \`_detect_file_drop()\`, whose
\`starts_like_path\` prefilter accepts anything starting with \`/\` and
forwards it to \`_resolve_attachment_path()\`. That helper calls
\`Path.exists()\` which invokes \`os.stat()\`, which raises
\`OSError(errno=ENAMETOOLONG)\` — 63 on macOS, 36 on Linux — when the
candidate exceeds NAME_MAX (typically 255 bytes).
The OSError propagates up to the broad \`except Exception\` in
\`process_loop\` (cli.py:11798), gets logged at WARNING level, and the
user's input is silently dropped. From the user's POV the chat prompt
hangs — the only signal is in agent.log:
WARNING cli: process_loop unhandled error (msg may be lost):
[Errno 63] File name too long: "/goal Drive the space board..."
This affects any slash command with prose-length arguments — \`/goal\`
in particular but also \`/skill\`, \`/cron\`, custom user commands.
Fix: wrap the \`exists()\`/\`is_file()\` calls in try/except OSError so
structurally-invalid path candidates cleanly return None. The slash-
command dispatch path downstream (cli.py:11718) then handles the
input correctly.
Tests: two new regression cases in test_cli_file_drop.py cover the
original \`/goal\` reproducer and a synthetic long path. All 35 file-
drop tests pass.
Reproducer (without the fix):
python -c "from cli import _detect_file_drop;
_detect_file_drop('/goal ' + 'a'*300)"
→ OSError: [Errno 63] File name too long
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| .. | ||
| acp | ||
| acp_adapter | ||
| agent | ||
| cli | ||
| cron | ||
| e2e | ||
| environments/benchmarks | ||
| fakes | ||
| gateway | ||
| hermes_cli | ||
| hermes_state | ||
| honcho_plugin | ||
| integration | ||
| openviking_plugin | ||
| plugins | ||
| providers | ||
| run_agent | ||
| skills | ||
| stress | ||
| tools | ||
| tui_gateway | ||
| website | ||
| __init__.py | ||
| conftest.py | ||
| run_interrupt_test.py | ||
| test_account_usage.py | ||
| test_atomic_replace_symlinks.py | ||
| test_base_url_hostname.py | ||
| test_batch_runner_checkpoint.py | ||
| test_cli_file_drop.py | ||
| test_cli_manual_compress.py | ||
| test_cli_skin_integration.py | ||
| test_ctx_halving_fix.py | ||
| test_empty_model_fallback.py | ||
| test_evidence_store.py | ||
| test_get_tool_definitions_cache_isolation.py | ||
| test_hermes_constants.py | ||
| test_hermes_home_profile_warning.py | ||
| test_hermes_logging.py | ||
| test_hermes_state.py | ||
| test_honcho_client_config.py | ||
| test_install_sh_pythonpath_sanitization.py | ||
| test_install_sh_setup_wizard_tty_probe.py | ||
| test_ipv4_preference.py | ||
| test_lazy_session_regressions.py | ||
| test_mcp_serve.py | ||
| test_mini_swe_runner.py | ||
| test_minimax_model_validation.py | ||
| test_minimax_oauth.py | ||
| test_minisweagent_path.py | ||
| test_model_picker_scroll.py | ||
| test_model_tools.py | ||
| test_model_tools_async_bridge.py | ||
| test_ollama_num_ctx.py | ||
| test_packaging_metadata.py | ||
| test_plugin_skills.py | ||
| test_project_metadata.py | ||
| test_retry_utils.py | ||
| test_sql_injection.py | ||
| test_subprocess_home_isolation.py | ||
| test_timezone.py | ||
| test_toolset_distributions.py | ||
| test_toolsets.py | ||
| test_trajectory_compressor.py | ||
| test_trajectory_compressor_async.py | ||
| test_transform_tool_result_hook.py | ||
| test_tui_gateway_server.py | ||
| test_utils_truthy_values.py | ||
| test_yuanbao_integration.py | ||
| test_yuanbao_markdown.py | ||
| test_yuanbao_pipeline.py | ||
| test_yuanbao_proto.py | ||