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Pi's exit hint prints "pi --session <id>", which cannot find a session stored in the gentle-shell home because it omits PI_CODING_AGENT_DIR (Gentleman-Programming#1503). The clean fix belongs in pi (earendil-works/pi#8048, #9750); until then gentle-shell appends its own resume line below pi's. This adds the pieces that stay inert until the launcher wires them in: - lib/gentle-shell-resume-hint.ts: a validated handoff format (pi's session id charset, control-free dirs), the matching gentle-shell command, and the line to print. The command is pinned against pi's real formatResumeCommand and SessionManager. - extensions/resume-hint.ts: on an interactive quit, writes the session to the file named by GENTLE_SHELL_RESUME_HANDOFF. It claims the variable on load, so subagents and tool shells never inherit it, and keeps the claim across /reload.
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Included review availability: This review used your included allowance. Your plan provides up to 4 included reviews per hour; 2 remain after this review. 📝 WalkthroughWalkthroughThe change adds helpers to build and validate resume handoffs, format resume commands, and plan terminal hints. A new extension claims a launcher-provided handoff path and writes session data after an interactive TUI quit. ChangesResume Handoff
Priority: ➖ Normal Estimated code review effort: 3 (Moderate) | ~20 minutes Change: Feature Sequence Diagram(s)sequenceDiagram
participant Launcher
participant resumeHint
participant PiShutdown
participant HandoffFile
participant GentleShell
Launcher->>resumeHint: provide handoff path in environment
resumeHint->>resumeHint: claim path and clear environment variable
PiShutdown->>resumeHint: report TUI shutdown with reason quit
resumeHint->>HandoffFile: write serialized session handoff
GentleShell->>GentleShell: parse handoff and plan resume hint
Merge Risk: ⚪ Minimal · up to This PR adds the resume-handoff support layer; it will remain inactive until the planned launcher wiring supplies the handoff path. The known Windows command-operator issue is addressed, and no current behavior change presents a merge-blocking risk. Security Architecture ReviewSecurity architecture risk: 🟡 Moderate · up to The new handoff can write session-resume information to a path supplied through the environment. The extension checks the path’s shape and creates the file without replacing an existing one, but this change does not establish who owns the destination or how a future launcher will consume and clean it up. No current launcher-driven exposure is demonstrated. Retained concerns
Security review detailsSecurity Blast Radius
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🚥 Pre-merge checks | ✅ 4 | ❌ 1❌ Failed checks (1 warning)
✅ Passed checks (4 passed)
✨ Finishing Touches🧪 Generate unit tests (beta)
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Address the CodeRabbit review on Gentleman-Programming#1515/Gentleman-Programming#1516: - When the quitting session belongs to another project than the launch directory (e.g. after /resume), hand off the absolute session file and print `--session <file>`. A bare id makes pi offer a fork into the launch directory, while a file path reopens the original session. Pinned against pi's real SessionManager. - Only claim a handoff path shaped like the launcher's private file (<tmpdir>/gentle-shell-resume-*/handoff.json) and create it with the "wx" flag, so an inherited or foreign GENTLE_SHELL_RESUME_HANDOFF can neither overwrite an existing file nor follow a planted symlink.
carlosmoradev
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Excellent work on this foundation slice.
The security and edge-case handling is very solid:
- The
wxflag write guard prevents planted symlink overwrites. - Deleting the env var on load while preserving the handoff path in
globalThiscleanly shields child subagents while surviving/reload. - Resolving
sessionFilefor cross-project sessions neatly bypasses Pi's interactive fork prompt.
Regarding your stacking question from an external fork: targeting main with PR 2 containing the branch history of PR 1 is indeed the standard GitHub workflow, since GitHub cross-repo PRs cannot target another fork's branch as base. Once this PR lands in main, a quick git rebase upstream/main on PR 2 will cleanly collapse its diff to only the launcher changes.
…ndows Address the review on Gentleman-Programming#1516: the printed resume command used POSIX single quotes, which cmd.exe and PowerShell do not honor, so a path with spaces or metacharacters could fail or be parsed unsafely when pasted. - On win32, arguments are wrapped in double quotes when needed. - When a value cannot be quoted safely there (", %, !, $, `, or a trailing backslash), no command is produced and pi's own line is left alone. - Other platforms keep POSIX quoting, and the pin against pi's formatResumeCommand compares with the same POSIX quoting.
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Actionable comments posted: 1
- 🪄 Fix CodeRabbit comments on this PR
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Inline comments:
Review comments at @lib/gentle-shell-resume-hint.ts:
- Around line 121-123: Update the WINDOWS_UNQUOTABLE check used by the
resume-argument quoting logic to reject cmd.exe metacharacters, including
ampersands, pipes, angle brackets, carets, and parentheses, rather than relying
on double quotes to protect them. Add regression coverage for a path containing
ampersands, such as the one shown in the diff, and preserve the existing checks.
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lib/gentle-shell-resume-hint.tstests/gentle-shell-resume-hint.test.ts
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… hint Address the latest CodeRabbit review on Gentleman-Programming#1515/Gentleman-Programming#1516: - On win32, also refuse & | < > ^ ( ). gentle-shell is installed as a .cmd shim, and PowerShell drops the quotes of a space-free argument when it calls one, so cmd.exe would read them as operators. For such paths no gentle-shell line is printed and pi's own line is left alone. - Take a color flag and print the label without ANSI styling when stdout has no colors (NO_COLOR, FORCE_COLOR=0, dumb terminals), like pi's own dimmed label.
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Addressed the retained Windows concern in 9152bc8: good point about the |
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Summary
pi --session <id>, which cannot find the session #1503).formatResumeCommand.wx.& | < > ^ ( )) are refused on win32 too, since PowerShell passes space-free arguments to the.cmdshim unquoted, and the label drops its ANSI style when stdout has no colors.This is PR 1 of 2. On its own it changes nothing visible: the extension does nothing until the launcher passes it
GENTLE_SHELL_RESUME_HANDOFF, which lands in PR 2.Issue
Refs #1503
Intermediate contribution: PR 2 closes the issue.
PR type
type:feature)Changes
lib/gentle-shell-resume-hint.tsgentle-shellcommand (with--link/--homeand--session-dir, or the absolute session file for a cross-project session), the private handoff path check, platform-aware quoting (POSIX elsewhere, double quotes on win32, or no command when a value cannot be quoted safely), and the line to print.extensions/resume-hint.tsquitin the TUI, writes the session to the handoff file. It claims the variable on load so neither subagents nor tool shells inherit it, and keeps the claim across/reload. Only accepts the launcher's private path shape and creates the file withwx, so it never overwrites an existing file or follows a symlink.tests/gentle-shell-resume-hint.test.tsformatResumeCommandandSessionManager.tests/resume-hint-extension.test.ts/reload, onlyquitin TUI mode, no overwrite through a planted symlink, and the cross-project handoff.scripts/verify-package-files.mjsTest plan
Verified on this branch alone on top of
main(b27bd328):node --experimental-strip-types --test tests/*.test.ts: 3973 pass, 0 fail.node scripts/check-types.mjs: no regressions against the recorded baseline.node scripts/build-runtime-modules.mjs --check: the 7 generated modules match.node scripts/verify-package-files.mjsandtests/runtime-harness.mjs: pass.--session-dirdetection, the cross-project case, the path check, thewxflag, the win32 branch, the win32 unquotable set (including cmd.exe operators), or the color flag each makes a test fail.Chain Context
mainStacking note: I am opening both PRs at once so they can be reviewed in order, as requested in the issue. I work from a fork without write access to this repo, so PR 2 cannot use this PR's branch as its base: that branch would have to exist in this repo. That is why both target
main, and until this one merges, PR 2's diff also includes this commit. There may be a better way to do this that I am not aware of; if so, I would appreciate any guidance on how to proceed.Summary by CodeRabbit