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lang-bash
seds in theClocale or that will potentially leave some arbitrary command injection vulnerabilities. Try for instance withadd=$'\u03b1\ne uname>&2'with GNUsedin a locale using BIG5 or BIG5-HKSCS charset (such aszh_HKon Ubuntu 20.04 for instance) where that U+03B1 (α) is encoded as 0xa3 0x5c (0x5c being also backslash). More generally, it's best to avoid inserting arbitrary data in the code argument of interpreters (likesedhere), and when you still do, sanitise like you did but bear in mind backslash escaping is only reliable in the C locale.