fix: start migration to comply with GNU style

core/standard.c

@@ -1,29 +1,18 @@
 #include "standard.h"
 #include "../config.h"
-#include "print.h"
+#include <stdio.h>
 #include <stdlib.h>
 #include <string.h>
 
-int
-parse_standard_options (void (*usage) (), int argc, char **argv)
-{
-  for (int i = 1; i < argc; ++i)
-    {
-      if (strcmp (argv[i], "--help") == 0)
-        {
-          usage ();
-          exit (0);
-        }
-      else if (strcmp (argv[i], "--version") == 0)
-        {
-          printfn ("%s (%s) %s\nCopyright (C) %d %s.\n%s\n"
-                   "This is free software: you are free to change "
-                   "and redistribute it.\nThere is NO WARRANTY, to the extent "
-                   "permitted by law.",
-                   PROGRAM, ORGANIZATION, VERSION, YEAR, ORGANIZATION,
-                   LICENCE_LINE);
-          exit (0);
-        }
+int parse_standard_options(void (*usage)(), int argc, char **argv) {
+  for (int i = 1; i < argc; ++i) {
+    if (strcmp(argv[i], "--help") == 0) {
+      usage();
+      exit(0);
+    } else if (strcmp(argv[i], "--version") == 0) {
+      printf("%s %s %d\n", PROGRAM, VERSION, COMMIT);
+      exit(0);
     }
+  }
   return -1;
 }