[hackers] [sbase] Add ARGNUM and ARGNUMF(base) || dsp

[git]

commit 3f9e501f6b8bd747ac8127ca56e34db0409e03d1
Author: dsp <d...@2f30.org>
Date:   Mon Nov 11 19:53:01 2013 +0000

    Add ARGNUM and ARGNUMF(base)
    
    This is useful to support the obsolete syntax -NUM for tools like
    head, tail and fold.

diff --git a/arg.h b/arg.h
index 2009b70..b8f48c0 100644
--- a/arg.h
+++ b/arg.h
@@ -29,11 +29,25 @@ extern char *argv0;
                                        _argc = argv[0][0];\
                                        switch (_argc)
 
+/* Handles obsolete -NUM syntax */
+#define ARGNUM                         case '0':\
+                                       case '1':\
+                                       case '2':\
+                                       case '3':\
+                                       case '4':\
+                                       case '5':\
+                                       case '6':\
+                                       case '7':\
+                                       case '8':\
+                                       case '9'
+
 #define ARGEND                 }\
                        }
 
 #define ARGC()         _argc
 
+#define ARGNUMF(base)  (brk = 1, estrtol(argv[0], (base)))
+
 #define EARGF(x)       ((argv[0][1] == '