fix inv bug

README.md

@@ -5,7 +5,7 @@ This is an elemental combination game written in C, with optional multi-player s
 A single-player example pack is provided as an example in ``bin/combos.txt``. This can be customized by the user, although internal limitations require the combination string to be in alphabetical order.
 
 ## Multi-player
-To set up multi-player mode, create a directory ``../elem_data`` with a copy of ``bin/inv_base.txt``.  Also, create separate directories for each user that plays.
+To set up multi-player mode, create a directory ``../elem_data``.  Also, create separate directories for each user that plays.
 
 The game can now be played with the following syntax, inside your user directory:
 ```sh

src/command.c

@@ -58,7 +58,7 @@ int inv_handler(const void *key, size_t size, uintptr_t val, void *usr) {
   if (val == 0)
     return 0;
   char *key2 = (char *)key;
-  char* val2 = (char*) val;
+  char *val2 = (char *)val;
 
   if (i->is_poll) {
     if (val2[strlen(val2) - 1] == '\n') {
@@ -69,7 +69,7 @@ int inv_handler(const void *key, size_t size, uintptr_t val, void *usr) {
     return 1;
   }
 
-  if (key2[strlen(key2) - 1] == '\n') {
+  if (strlen(key2) > 0 && key2[strlen(key2) - 1] == '\n') {
     printf("- %s", key2);
   } else {
     printf("- %s\n", key2);

src/main.c

@@ -20,7 +20,7 @@ void init_tables(hashmap *elements, hashmap *inv, hashmap *polls, int do_inv) {
   if (!do_inv)
     return;
 
-  load_elements(elements, "../elem_data/" inv_base_file, 1) ||
+  load_elements(inv, "../elem_data/" inv_base_file, 1) ||
       load_elements(inv, inv_base_file, 1) ||
       load_elements(inv, "bin/" inv_base_file, 1);