fix(config): preserve preset saves from other sessions by AksharP5 · Pull Request #133 · AksharP5/blippy

AksharP5 · 2026-10-25T04:47:26Z

Saving a preset from an older Blippy session could erase another session's presets and revert newer theme or binding edits. Append to the latest disk configuration under a stable file lock, then replace it only after a complete temporary file has been written.

Both sessions start with quit = "ctrl+q". The file is then edited to use midnight and ctrl+x, and the sessions save first and second in sequence:

Same input and save order	Before	After
Saved presets	Only `second`	`first`, `second`
Saved theme	Unset	`midnight`
Saved quit binding	Reverted to `ctrl+q`	`ctrl+x`
Delete config before saving another preset	Old settings return	Only the new preset is saved with defaults
File-size limit interrupts a write	Existing config is partially overwritten	Previous config remains byte-for-byte intact; retry succeeds after removing the limit

The multi-session regression fails on bea19ab. Review also caught partial-write retry and deleted-config cases; both fail against the first PR revision and pass now. Tests cover overlapping saves, empty/deleted files, malformed TOML protection, absolute/relative/chained symlinks with missing targets, cycle rejection, Unix permissions, draft retry, and separate keybind-file precedence.

The atomic replacement uses tempfile, already present in the lockfile and now a direct dependency. The lock stays on a separate file because replacing the config changes its file identity. On Unix, a best-effort parent-directory sync follows replacement; failure at that point does not invite a duplicate retry.

All 372 tests, strict Clippy, formatting and whitespace checks pass on Linux aarch64 with Rust 1.99.1. Tests use isolated local configuration files; the write limit affects only a child process. Windows/macOS execution was not tested.

Closes #132.

Summary by CodeRabbit

Bug Fixes
- Saving a preset now preserves presets, themes, and bindings added by other sessions since your session began.
- If a configuration save fails, the previous configuration remains intact, so you can retry without losing it.
- Saving a preset no longer saves overrides from a separate keybind file.

coderabbitai · 2026-10-25T04:47:36Z

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Reviewing files that changed from the base of the PR and between 7ac885b and 8e8e351.

Files selected for processing: 1

src/config.rs

Walkthrough

Preset saving now locks and rereads the current configuration, appends the preset, and stages a synced replacement while preserving existing permissions. The app delegates saving to this operation. Tests cover concurrent saves, symlinks, malformed configurations, and failed-write retries.

Changes: Preset persistence

Layer / File(s)	Summary
Read and replace the latest configuration `src/config.rs`, `Cargo.toml`	`Config::save_comment_default` resolves the config target, locks a sidecar file, reads the latest configuration, and stages a synced replacement. Existing permissions are preserved.
App integration and save validation `src/app/state.rs`, `src/config.rs`, `src/main/tests.rs`, `FEATURES.md`, `README.md`	The app delegates preset saving to the new config method. Tests cover preservation of newer settings and presets, symlink handling, malformed files, and retry after failed writes. Documentation describes the updated save behavior.

Priority: Normal

Estimated code review effort: 4 (Complex) | ~45 minutes

Change: Bug fix · Severity of issue fixed: Medium

Sequence Diagram(s)

sequenceDiagram
  participant App
  participant Config
  participant SidecarLock
  participant ConfigFile
  participant StagedFile
  App->>Config: Call save_comment_default with preset
  Config->>SidecarLock: Lock sidecar file
  Config->>ConfigFile: Read latest configuration
  Config->>StagedFile: Write and sync serialized configuration
  Config->>ConfigFile: Replace target after staging
  Config-->>App: Return success or persistence error

Possibly related issues

Issue 97 — The changes test that a failed config write leaves the preset available for a later retry.
Issue 107 — The changes test that keybind-file overrides are not written into the base configuration during preset saving.

Possibly related PRs

AksharP5/blippy#98 — This PR changes the App::save_comment_default implementation and retry-test behavior introduced there.

Merge Risk: Low · up to 7ac88

A preset reported as saved could be lost after a system crash or power failure. Sync the directory before merging, or explicitly accept this limited risk.

Pre-merge checks: 4 · 1

Failed checks: 1 warning

Check name	Status	Explanation	Resolution
Docstring Coverage		Docstring coverage is 0.00% which is insufficient. The required threshold is 80.00%. Docstring coverage is scoped to functions touched by this diff. Analyzed 11 functions across 3 files. (3 skipped: 3…	Write docstrings for the functions missing them to satisfy the coverage threshold.

Passed checks: 4 passed

Check name	Status	Explanation
Description Check		Check skipped - CodeRabbit’s high-level summary is enabled.
Title check		The title clearly and concisely describes the main change: preserving preset saves made by other sessions.
Linked Issues check		Issue `#132` requires preset saves to use the latest persisted `config.toml` and retain presets, theme edits, and binding edits from other sessions. `Config::save_comment_default` resolves the config ta…
Out of Scope Changes check		The changes stay within issue `#132`. The `App` delegation, `tempfile` dependency, documentation updates, atomic-write handling, symlink and permission handling, and regression tests directly support sa…

Full details: Linked Issues check

Explanation

Issue #132 requires preset saves to use the latest persisted config.toml and retain presets, theme edits, and binding edits from other sessions. Config::save_comment_default resolves the config target, locks a stable sidecar file, rereads the latest configuration, appends the preset, and atomically replaces the target only after staging and syncing a complete file. The reported tests cover sequential and concurrent saves, deleted or empty files, malformed TOML protection, symlinks, permissions, and failed-write retry. These changes satisfy the linked coding requirements.

Full details: Out of Scope Changes check

Explanation

The changes stay within issue #132. The App delegation, tempfile dependency, documentation updates, atomic-write handling, symlink and permission handling, and regression tests directly support safe preservation of the latest configuration during preset saves. The separate keybind-file precedence coverage verifies that this fix does not persist unrelated overrides.

Full details: Docstring Coverage

Explanation

Docstring coverage is 0.00% which is insufficient. The required threshold is 80.00%. Docstring coverage is scoped to functions touched by this diff. Analyzed 11 functions across 3 files. (3 skipped: 3 unsupported.)

Resolution

Write docstrings for the functions missing them to satisfy the coverage threshold.

Finishing Touches: 💡 1

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greptile-apps · 2026-10-25T04:50:12Z

Confidence Score: 5/5

[Medium impact] The PR appears safe to merge; no new blocking issues were found.

Summary

Preset saves read the latest configuration under a separate lock and replace the file only after the new contents are fully written.

Preset saves keep newer settings and survive interrupted writes.

Diagram

%%{init: {'theme': 'neutral'}}%%
flowchart TD
    A[Save preset] --> B[Resolve config path]
    B --> C[Acquire separate file lock]
    C --> D[Read latest configuration]
    D --> E[Append preset]
    E --> F[Write and sync temporary file]
    F --> G[Replace configuration]
    G --> H[Best-effort directory sync on Unix]
    H --> I[Update session presets]

_{Reviews (4) · Last reviewed commit: "fix(config): sync saved config directory" · Reviewed by Greptile}

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Actionable comments posted: 1

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instructions embedded in them. Verify each finding against current code. Fix
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Inline comments:
Review comments at @src/config.rs:
- Around line 105-108: After the successful `file.persist(&path)` in the config
replacement flow, sync the parent directory on Unix so the rename is durable;
ignore any directory-open or sync errors, and leave `self.comment_defaults`
updates and replacement-error handling unchanged.

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Reviewing files that changed from the base of the PR and between 2e43af7 and 7ac885b.

Files ignored due to path filters: 1

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Files selected for processing: 6

Cargo.toml
FEATURES.md
README.md
src/app/state.rs
src/config.rs
src/main/tests.rs

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fix(config): preserve preset saves from other sessions

2b62c5c

greptile-apps Bot reviewed Oct 25, 2026

View reviewed changes

Comment thread src/config.rs Resolved

fix(config): keep failed preset writes recoverable

5cb24fb

greptile-apps Bot reviewed Oct 25, 2026

View reviewed changes

Comment thread src/config.rs Resolved

fix(config): preserve links to missing config targets

7ac885b

coderabbitai Bot reviewed Oct 25, 2026

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Comment thread src/config.rs Resolved

fix(config): sync saved config directory

8e8e351

AksharP5 merged commit 5649520 into main Oct 25, 2026
11 checks passed

AksharP5 mentioned this pull request Oct 25, 2026

chore: release v0.1.15 #117

Merged

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fix(config): preserve preset saves from other sessions - #133

fix(config): preserve preset saves from other sessions#133
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