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fix(lsp): execute code action command when workspace edit is empty (closes #1495) - #1497
When an interactive LSP code action has a valid empty Edit (len(batches) == 0) and a non-empty Command, applyInteractiveCodeActionEdit previously returned false, causing HandleCodeActionsResult to return early and skip command execution.
This change:
Updates applyInteractiveCodeActionEdit to treat an empty, valid edit as a successful no-op (applied: false, ok: true), while maintaining rejection for invalid or unsupported workspace edits (applied: false, ok: false).
Adjusts HandleCodeActionsResult so:
An empty edit does not trigger an edit-applied status notification.
The action's command is executed when the edit succeeds (or is a no-op).
Failed or unsupported edits still abort and prevent command execution.
Adds regression unit tests in internal/app/workspace_edit_test.go:
Interactive code actions now distinguish between edits being applied and the edit completing successfully. The applied notification appears only when at least one file changes, and success is reported only when all edit batches complete.
Actions with no text edits can still run their associated command without showing an edit-applied notification. Unsupported or invalid edits stop command execution and display the relevant warning.
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Walkthrough
Interactive code-action edit handling now distinguishes successful no-op edits from applied edits and invalid edits. The selection flow reports applied edits only when applicable, runs attached commands for valid empty edits, and prevents command execution when edit application fails.
Changes: Interactive code actions
Layer / File(s)
Summary
Edit outcomes and command flow internal/app/app_lsp.go, internal/app/app.go, internal/app/workspace_edit_test.go
The edit helper reports separately whether any file was applied and whether all batches completed. The selection callback uses these results to control notifications and command execution. An injected client lookup is used when present, with the language-server manager as fallback. Tests cover empty and unsupported edits, as well as existing partial-application and stale-buffer cases.
eugenioenko/ttt#1486: Adds the interactive code-action flow and workspace-edit application path updated here.
eugenioenko/ttt#1257: Changes LSP edit-position handling used when applying interactive code-action edits.
eugenioenko/ttt#1123: Changes undo grouping used by nonempty workspace edits, including code-action edits.
Suggested labels:v1.13.0
Merge Risk: Minimal · up to c82cf
Empty-edit code actions can run their commands without claiming an edit was applied, while failed edits still block command execution. The change is ready to merge after normal checks.
Pre-merge checks: 4
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Explanation
Description Check
Check skipped - CodeRabbit’s high-level summary is enabled.
Title check
The title clearly and concisely identifies the main change: executing an LSP code action command when the workspace edit is empty.
Linked Issues check
Issue #1495 requires command execution after a valid empty edit, no status.codeActionApplied notification for that edit, and command suppression after unsupported or failed edits. `applyInteractiveC…
Out of Scope Changes check
The changes stay within issue #1495. The client lookup hook supports deterministic command-dispatch tests, and the added tests cover the required code-action behavior. No unrelated changes appear in t…
Full details: Linked Issues check
Explanation
Issue #1495 requires command execution after a valid empty edit, no status.codeActionApplied notification for that edit, and command suppression after unsupported or failed edits. applyInteractiveCodeActionEdit returns (false, true) for an empty valid edit and rejects invalid edits or stale buffers. HandleCodeActionsResult notifies only when an edit applies and executes the command after a successful no-op. The new tests verify command dispatch, notification behavior, and unsupported-edit command suppression. Existing stale-buffer checks remain in place.
Full details: Out of Scope Changes check
Explanation
The changes stay within issue #1495. The client lookup hook supports deterministic command-dispatch tests, and the added tests cover the required code-action behavior. No unrelated changes appear in the reviewed pull-request changes.
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Reviewing files that changed from the base of the PR and between 4dc4793 and c82cf93.
Files selected for processing: 3
internal/app/app.go
internal/app/app_lsp.go
internal/app/workspace_edit_test.go
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Actionable comments posted: 1
Fix comments: Fix CodeRabbit comments on this PR
Prompt to fix all issues
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Inline comments:
Review comments at @internal/app/workspace_edit_test.go:
- Around line 605-661: Update TestCodeActionsResultRunsCommandWithEmptyEdit to
use a narrow client-lookup seam backed by a fake command client, so selecting
the action dispatches its command and arguments to ExecuteCommand. Assert that
command execution returns no error, and preserve the existing checks that the
empty edit does not show the applied notification and that the result requests
notification.
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Reviewing files that changed from the base of the PR and between 491b4da and 4dc4793.
Files selected for processing: 2
internal/app/app_lsp.go
internal/app/workspace_edit_test.go
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Use a narrow command-client lookup seam to verify the selected command, arguments, server, working directory, and successful completion for empty workspace edits. Keep notification checks and use synctest to prove unsupported edits perform no lookup or dispatch without a timed wait.
Validated with make test, make lint, focused race tests, and a mutation check that fails when command arguments are dropped.
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Summary
When an interactive LSP code action has a valid empty
Edit(len(batches) == 0) and a non-emptyCommand,applyInteractiveCodeActionEditpreviously returnedfalse, causingHandleCodeActionsResultto return early and skip command execution.This change:
applyInteractiveCodeActionEditto treat an empty, valid edit as a successful no-op (applied: false, ok: true), while maintaining rejection for invalid or unsupported workspace edits (applied: false, ok: false).HandleCodeActionsResultso:internal/app/workspace_edit_test.go:TestCodeActionsResultRunsCommandWithEmptyEditTestCodeActionsResultPreventsCommandOnUnsupportedEditCloses #1495.
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