PIPE_FILTER_AUX_INLINE   19 maint/gnulib/lib/pipe-filter-aux.c #define PIPE_FILTER_AUX_INLINE _GL_EXTERN_INLINE
PIPE_FILTER_AUX_INLINE   23 maint/gnulib/lib/pipe-filter-aux.h # define PIPE_FILTER_AUX_INLINE _GL_INLINE