test

    // group at all.

    bool extractSubshellBody(const std::string &stage,std::string &body,std::string &suffix);

    // "{ cmds; } redirection" group as one pipeline stage -- same job as

    // extractSubshellBody() just above, for '{'/'}' instead of '('/')'

    // (e.g. the Linux kernel's own scripts/syscallhdr.sh: "grep ... | {

    // echo ...; while read ...; done; } > outfile"). Requires whitespace

    // right after '{' (a bare "{foo}" is a literal word, never a group

    // opener), matching what the non-pipeline "{ CMDS; }" handler in

    // parse() already requires.

    bool extractBraceGroupBody(const std::string &stage,std::string &body,std::string &suffix);

    // True if `line` ends with an odd (unterminated) single- or

    // double-quote open at end-of-string -- e.g. a "usage=\"...\nmulti-

    // line text...\n...\"" assignment is still incomplete after its first