nix-store --print-env: fix shell quoting on _args output#14329
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The previous implementation double-quoted the _args variable by escaping each argument individually and then wrapping them all in single quotes, producing output like: _args=''-e' 'arg1' 'arg2'' This fix concatenates all arguments into a single string first, then escapes that string once, producing correct output like: _args='-e arg1 arg2' This prevents potential command injection issues when the output is sourced in shell scripts. Fixes NixOS#14327
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nix-store --print-env: fix shell quoting on _args output
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The previous implementation double-quoted the _args variable by escaping each argument individually and then wrapping them all in single quotes, producing output like: _args=''-e' 'arg1' 'arg2''
This fix concatenates all arguments into a single string first, then escapes that string once, producing correct output like: _args='-e arg1 arg2'
This prevents potential command injection issues when the output is sourced in shell scripts.
Fixes #14327
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