completely revamp to use my `+' example

1 files changed, 18 insertions, 28 deletions

diff --git a/addon.h b/addon.h
index 25f2312..b4a207b 100644
--- a/addon.h
+++ b/addon.h
@@ -1,38 +1,28 @@
 /*
-   This file is the interface to the rest of rc for any locally
-   defined addon builtins.  By default there are none.
-   The interface consists of the following macro.
-  
-   ADDONS	A comma-separated list of pairs of function pointers
-		and string literals.
-  
-   The addon functions must also have proper prototypes in this file.
-   The builtins all have the form:
-  
+   This file is NOT BUILT by default.  Together with addon.c, it
+   provides an example of how to add new builtins to rc.
+
+   To define a new builtin, it must appear in the macro ADDONS, which
+   is a comma-separated list of pairs of function pointers (the
+   implementation of the new builtin) and string literals (the name of
+   the new builtin).
+
+   Any new builtin functions must also have proper prototypes in this
+   file.  This is always of the same form.
+
 	void b_NAME(char **av);
-  
+
+   The first argument, av[0], is the name of the builtin.  The last
+   argument is followed by a NULL pointer.
+
    Builtins report their exit status using set(TRUE) or set(FALSE).
   
-   Example:
-  
-	#define ADDONS	{ b_test, "test" },
-	extern void b_test(char **av);
 */
 
-#define ADDONS		/* no addons by default */
-
-#ifdef	DWS
-
-/*
-   This is what DaviD Sanderson (dws@cs.wisc.edu) uses.
-*/
+#if RC_ADDON
 
-#undef	ADDONS
-#define ADDONS	{ b_access,	"access" },\
-		{ b_test, 	"test" },\
-		{ b_test,	"[" },
+#define ADDONS	{ b_add,	"+" },
 
-extern void b_access(char **av);
-extern void b_test(char **av);
+extern void b_add(char **av);
 
 #endif