feat: complete command completion in shell

kernel/src/Api/BuildNo.hpp

@@ -12,4 +12,4 @@
 
 #pragma once
 
-#define MONTAUK_BUILD_NUMBER 108
+#define MONTAUK_BUILD_NUMBER 110

programs/src/shell/main.cpp

@@ -441,15 +441,25 @@ extern "C" void _start() {
             char* table[128] = { };
             int n = get_completions(line, table, 128, cwd, current_drive);
 
-            montauk::print("\n");
-            for (int i = 0; i < n; i++) {
-                montauk::print("  ");
-                montauk::print(table[i]);
-                montauk::print("\n");
-            }
+            // Command completion if there is only 1 match
+            if (n == 1) {
+                size_t chars_already_typed = pos;
+                pos = 0;
 
-            pos = 0;
-            prompt();
+                montauk::strncpy(line, table[0], 256);
+                pos = montauk::slen(table[0]);
+                montauk::print(table[0] + chars_already_typed);
+            } else { // If more than one result, print multiple results
+                montauk::print("\n");
+                for (int i = 0; i < n; i++) {
+                    montauk::print("  ");
+                    montauk::print(table[i]);
+                    montauk::print("\n");
+                }
+
+                pos = 0;
+                prompt();
+            }
 
             continue;
         }