fix command-line argument starting file if it doesn't exist

it used to open an untitled buffer.

also, clarified buffer_load_file

1 files changed, 4 insertions, 0 deletions

diff --git a/lsp.c b/lsp.c
index 877e56f..01dc2a3 100644
--- a/lsp.c
+++ b/lsp.c
@@ -421,6 +421,10 @@ static int lsp_communication_thread(void *data) {
 }
 
 u32 lsp_document_id(LSP *lsp, const char *path) {
+	if (!path) {
+		assert(0);
+		return 0;
+	}
 	SDL_LockMutex(lsp->document_mutex);
 		u32 *value = str_hash_table_get(&lsp->document_ids, path);
 		if (!value) {