# Shell Command Explanation Option
## Description
This PR adds an option to explain shell commands when the user is
prompted to approve them (Fixes#110). When reviewing a shell command,
users can now select "Explain this command" to get a detailed
explanation of what the command does before deciding whether to approve
or reject it.
## Changes
- Added a new "EXPLAIN" option to the `ReviewDecision` enum
- Updated the command review UI to include an "Explain this command (x)"
option
- Implemented the logic to send the command to the LLM for explanation
using the same model as the agent
- Added a display for the explanation in the command review UI
- Updated all relevant components to pass the explanation through the
component tree
## Benefits
- Improves user understanding of shell commands before approving them
- Reduces the risk of approving potentially harmful commands
- Enhances the educational aspect of the tool, helping users learn about
shell commands
- Maintains the same workflow with minimal UI changes
## Testing
- Manually tested the explanation feature with various shell commands
- Verified that the explanation is displayed correctly in the UI
- Confirmed that the user can still approve or reject the command after
viewing the explanation
## Screenshots
## Additional Notes
The explanation is generated using the same model as the agent, ensuring
consistency in the quality and style of explanations.
---------
Signed-off-by: crazywolf132 <crazywolf132@gmail.com>
Previously, `parseToolCall()` was using `computeAutoApproval()`, which
was a somewhat parallel implementation of `canAutoApprove()` in order to
get `SafeCommandReason` metadata for presenting information to the user.
The only function that was using `SafeCommandReason` was
`useMessageGrouping()`, but it turns out that function was unused, so
this PR removes `computeAutoApproval()` and all code related to it.
More importantly, I believe this fixes
https://github.com/openai/codex/issues/87 because
`computeAutoApproval()` was calling `parse()` from `shell-quote` without
wrapping it in a try-catch. This PR updates `canAutoApprove()` to use a
tighter try-catch block that is specific to `parse()` and returns an
appropriate `SafetyAssessment` in the event of an error, based on the
`ApprovalPolicy`.
Signed-off-by: Michael Bolin <mbolin@openai.com>
