🎨 Rename prev argument to previous

src/errorAndExit.c

@@ -11,6 +11,6 @@ void errorAndExit() {
   fprintf(stderr, "  -o, --offset: The offset into the disk, given in bytes, where the local file header of the file we want to extract starts.\n");
   fprintf(stderr, "  -s, --size: The stored size of the file we want to extract (= the compressed size). After inflation, the file will likely be bigger than this.\n");
   fprintf(stderr, "  -k, --keys: Optionally, the three decryption keys used to decrypt the file before inflation.\n");
-  fprintf(stderr, "  -p, --prev: Optionally, the location of the previous version of this file, in case this disk only contains the xdelta3 differences and not an actual file.\n");
+  fprintf(stderr, "  -p, --previous: Optionally, the location of the previous version of this file, in case this disk only contains the xdelta3 differences and not an actual file.\n");
   exit(1);
 }

src/parseArguments.c

@@ -14,7 +14,7 @@ static struct option long_options[] = {
   {"offset", required_argument, 0, 'o'},
   {"size", required_argument, 0, 's'},
   {"keys", required_argument, 0, 'k'},
-  {"prev", required_argument, 0, 'p'},
+  {"previous", required_argument, 0, 'p'},
   {NULL, 0, 0, 0},
 };