AC_DEFUN(PSI_TYPE_PAIR, [m4_case(m4_bregexp([$1], [^\w+], [\&]),
[void], [PSI_T_VOID, \"void\"],
[struct], [PSI_T_STRUCT, \"m4_bregexp([$1], [^struct \(\w+\)], [\1])\"],
AC_DEFUN(PSI_TYPE_PAIR, [m4_case(m4_bregexp([$1], [^\w+], [\&]),
[void], [PSI_T_VOID, \"void\"],
[struct], [PSI_T_STRUCT, \"m4_bregexp([$1], [^struct \(\w+\)], [\1])\"],