Fix Fish activation quoting vulnerability - #614
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Fish treats backslashes as escapes inside single-quoted strings, unlike POSIX shells. A trailing backslash could therefore escape the closing quote and allow a following environment value to execute as Fish code. Use Fish-specific quoting and cover the exploit with unit and real-shell integration tests. Co-authored-by: Codex <noreply@openai.com>
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Fish treats backslashes as escapes inside single-quoted strings, unlike POSIX shells. A trailing backslash could therefore escape the closing quote and allow a following environment value to execute as Fish code. Use Fish-specific quoting and cover the exploit with unit and real-shell integration tests.
Co-authored-by: Codex noreply@openai.com