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fix(rc.d): list ~/.rc.d with command ls in the login bridge - #588
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The login ~/.profile sources ~/.bashrc before the rc.d block, so in an interactive login shell a user's `ls` alias or function is already defined when the block lists ~/.rc.d. Depending on the alias, snippets then run in the wrong order (`ls -r`), are skipped (`ls -F` on an executable snippet, `ls -Q`), or are found only because their names appear among the words of a long listing (`ls -l`). `command ls` skips aliases and functions; the C collation and the block's line count are unchanged. Fixes #587
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AI-assisted review (OpenCode), verified independently against head dbbc874fc1300b5a8045f720b4d311601cf4f9a9.
Approving. I generated the emitted bridge text from both base and head and ran it under hostile shell state, including real bash -l and bash -il with an authentic msb-shaped ~/.profile and the hostile definition living in .bashrc.
The fix works, causally
All four interference modes from #587 reproduce on base and are fixed on head:
.bashrc holds |
base | head |
|---|---|---|
alias ls='ls -r' |
20-b, 10-a |
10-a, 20-b |
alias ls='ls -F' with an executable snippet |
20-b only |
10-a, 20-b |
alias ls='ls -Q' |
nothing sourced | 10-a, 20-b |
ls() { ... }, including export -f ls |
20-b only |
10-a, 20-b |
Confirmed causally rather than by correlation: swapping the base common.sh into the head worktree makes the new test fail with exactly 20-b / 10-a, and restoring head makes it pass.
Line count and bounds are genuinely unchanged, checked byte-level rather than by inspection. The emitted block is 11 lines on both revisions, the diff of the two texts is exactly one line, and the derived bounds are identical: msb.sh:3970 3 + 11 = 14, sbx.sh:684 1 + 11 = 12. The upgrade path holds, since a profile written by the old bridge is still within max_lines and gets rewritten, and append-survival still holds at one appended line.
common.sh:1192 is the only ~/.rc.d listing in the repo. The doctor at common.sh:3596-3601 iterates literal paths and greps, and still matches the acq-login-profile marker against the new text.
The $BASH_VERSION gate at common.sh:1191 means the POSIX sh/dash login path is unaffected; under dash -c '. ~/.profile' the body never executes on either revision.
Checks
Focused bats --filter 'rc.d' over both files: 7/7. Both modified files in full: 37/37 and 21/21. shellcheck -S warning acq.backends/common.sh clean, and clean on both .bats files. CI on this head is green 5/5.
I ran these in a sanitized explicit environment with env -i, a pinned PATH, a private TMPDIR, and GIT_CONFIG_GLOBAL/GIT_CONFIG_SYSTEM pointed at /dev/null, after grepping both files specifically for the #569 nested-fixture-repo pattern. Neither file contains git init or git -C.
I did not run the full ./scripts/test-acq-bats, deliberately, given #569 and runtime. Your 730/12 figure and the 10-of-12 also-fail-on-main claim are therefore unverified by me. No live msb or sbx verification either; no backend is available here.
Two low-severity notes, neither blocking
command is itself shadowable. command() { echo 20-b.sh; } or alias command='echo 20-b.sh' in .bashrc passes on base and fails on head. command bypasses alias and function lookup for its argument, not for itself. This trades a near-universal interference vector for a rare one, so it is strongly net-positive, but the PR body's phrasing is broader than the behavior. Neither \command nor builtin command closes it; only a command-word-free form would. Also unchanged: a PATH-shim ls still wins, since command ls honors PATH, so the eza style replacement mentioned in the issue is only addressed in its alias form.
Unquoted command substitution still word-splits, pre-existing and unchanged. With .rc.d holding 10-a.sh, 50 space.sh, and space.sh, both revisions source 10-a, space, space: the spaced name never runs and an unrelated snippet is double-sourced. The charset guard at common.sh:1196 inspects post-split words, so it cannot catch this. It is unreachable through the sanctioned path, because kit_spec_files rejects both shapes at kit-translate.sh:561, which I verified with a real spec. Defense-in-depth gap only, introduced at 6a67063, untouched here.
Worth recording: ShellCheck flags the base bridge text as SC2045 when linted as the sh it becomes, and the head text does not. command ls silences that detector without removing the fragility it pointed at.
Optional, if you amend anyway
- Soften the comment at
common.sh:1188-1189. Suggest: "lists withcommand lsso a userlsalias or function from the sourced ~/.bashrc cannot reorder or filter the snippets." - Consider a follow-up for the unquoted-substitution splitting, noting that
kit_spec_filesis the control that currently makes it unreachable.
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🤖 I have created a release *beep* *boop* --- ## [4.1.0](v4.0.2...v4.1.0) (2026-10-22) ### Features * **kits:** pin agentic-coding-patterns v1.15.0 ([#595](#595)) ([1e9ef27](1e9ef27)) * **kits:** pin agentic-coding-patterns v1.16.1 ([#609](#609)) ([20d6bab](20d6bab)) * **opencode:** use generic devenv base by default ([#584](#584)) ([cefd6f2](cefd6f2)) ### Bug Fixes * **ci:** bump markdown-it to 14.3.3 and smol-toml to 1.9.0 overrides ([#599](#599)) ([5ab74b8](5ab74b8)) * **msb:** stop false "no ssh-agent route" warnings from grep sigpipe ([#598](#598)) ([24c8493](24c8493)) * **provider-facts:** preserve caller-visible assignments through wrapper subshell ([#603](#603)) ([2361b11](2361b11)) * **provider-facts:** preserve unset caller IFS ([#605](#605)) ([3fe3150](3fe3150)) * **rc.d:** list ~/.rc.d with command ls in the login bridge ([#588](#588)) ([d7dbeb6](d7dbeb6)) * **verify:** make provider backend verification fail closed ([#602](#602)) ([f67041a](f67041a)) --- This PR was generated with [Release Please](https://github.com/googleapis/release-please). See [documentation](https://github.com/googleapis/release-please#release-please). Co-authored-by: github-actions[bot] <41898282+github-actions[bot]@users.noreply.github.com>
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2 participants
Summary
The
~/.rc.dlogin bridge (acq_login_profile_rc_block) lists snippets with$(LC_ALL=C ls "$HOME"/.rc.d). The login~/.profilesources~/.bashrcbefore that block, so in an interactive login shell a user'slsalias or function is already in effect when the block runs. Depending on the alias, snippets run in the wrong order (ls -r), are skipped (ls -Fon an executable snippet,ls -Q), or are found only because their names appear among the words of a long listing (ls -l).This switches the listing to
LC_ALL=C command ls, which bypasses aliases and functions. The C collation, guards, and line count of the block (and so the heal'smax_linesbound) are unchanged.Related Issues
Fixes #587
Type of Change
Checklist
feat:,fix:,docs:)Test Results
rc.d: login-profile block ignores an ls alias or function from .bashrc (#587)(72-msb-agent-user.bats) runs the generated block withalias ls="ls -r"and, separately, anlsfunction that names one snippet twice and omits the other. Without the fix it fails (20-bthen10-a); with it, both cases source10-athen20-b.LC_ALL=C command ls.bats --filter 'rc.d|#426'over both files: 14/14 pass.shellcheck -S warning acq.backends/common.sh: clean../scripts/test-acq-bats: 730 pass, 12 fail. The same 10 fail on unmodifiedmainin this environment (clone, msys, migration-gate, dispatch, github-scope, and msb provision tests), and the other 2 are the sbx grammar acceptance tests, which needsbx login.