feat(lint): add exec-stderr-silence rule — flag 'exec ... 2>/N' persistent stderr suppression#67
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…r suppression Adds text-based detection for 'exec' with stderr redirection (2>/dev/null, 2>&-, 2>!) that persists for the current shell. - Detection via bash regex: \bexec\b[^#]*2> with dangerous target - Fixtures: clean, dirty, ignored-inline, ignored-file, broad-walk, no-toml, empty - 17 BATS tests covering detection, ignore mechanisms, discovery, edge cases - Self-hosting verified: task file does not self-report - Follows or-true pattern for output format, ignore conventions, and scope
This was referenced Jun 26, 2026
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Summary
Adds a new lint rule
exec-stderr-silencethat flagsexecwith stderr redirection (e.g.exec 3<>"$path" 2>/dev/null). Unlike other commands,execmakes the redirection persist for the current shell, which can silently suppress diagnostic output. Discovered during KnickKnackLabs/notes#15 work.Detection approach
Text-based pattern matching via bash regex:
execfollowed by2>/dev/null,2>&-,2>!(noclobber override)Files
.mise/tasks/lint/exec-stderr-silence— task implementation (67 lines of logic)test/lint/exec-stderr-silence/exec-stderr-silence.bats— 17 BATS teststest/lint/exec-stderr-silence/fixtures/— 7 fixture scenariosValidation
mise run test— all 17 tests passcodebase lint:exec-stderr-silence .mise/tasks/lint/exec-stderr-silence— self-hosting passes (task doesn't self-report)git diff --check— clean