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addon.h (816B)

      1 /*
      2    This file is NOT BUILT by default.  Together with addon.c, it
      3    provides an example of how to add new builtins to rc.
      4 
      5    To define a new builtin, it must appear in the macro ADDONS, which
      6    is a comma-separated list of pairs of function pointers (the
      7    implementation of the new builtin) and string literals (the name of
      8    the new builtin).
      9 
     10    Any new builtin functions must also have proper prototypes in this
     11    file.  This is always of the same form.
     12 
     13 	void b_NAME(char **av);
     14 
     15    The first argument, av[0], is the name of the builtin.  The last
     16    argument is followed by a NULL pointer.
     17 
     18    Builtins report their exit status using set(TRUE) or set(FALSE).
     19 
     20 */
     21 
     22 #if RC_ADDON
     23 
     24 #define ADDONS \
     25 	{ b_sum,	"+" }, \
     26 	{ b_prod, "x" },
     27 
     28 extern void b_sum(char **av);
     29 extern void b_prod(char **av);
     30 
     31 #endif