Switch C-style loops to semicolons before I regret having used commas

README.md

@@ -441,7 +441,7 @@ Modules are run once and then cached, so if they preform actions like printing o
 Kuroku supports C-style for loops, while loops, and Python-style iterator for loops.
 
 ```py
-for i = 1, i < 5, i = i + 1:
+for i = 1; i < 5; i = i + 1:
     print(i)
 # → 1
 #   2

compiler.c

@@ -1217,7 +1217,7 @@ static void forStatement() {
 		emitByte(OP_POP);
 
 	} else {
-		consume(TOKEN_COMMA,"expect ,");
+		consume(TOKEN_SEMICOLON,"expect ; after var declaration in for loop");
 		loopStart = currentChunk()->count;
 
 
@@ -1227,7 +1227,7 @@ static void forStatement() {
 		exitJump = emitJump(OP_JUMP_IF_FALSE);
 		emitByte(OP_POP);
 
-		if (check(TOKEN_COMMA)) {
+		if (check(TOKEN_SEMICOLON)) {
 			advance();
 			int bodyJump = emitJump(OP_JUMP);
 			int incrementStart = currentChunk()->count;

test/test.krk

@@ -28,7 +28,7 @@ print("Hex: " + 0xFF + " Octal: " + 0o123 + " Binary: " + 0b1010)
 # This `for init, cond, step:` syntax is possibly temporary? I do intend to
 # implement iterators and `for VAR in ITER:` like in Python, but C-style for
 # loops are also useful...
-for i = 0, i < 10, i = i + 1:
+for i = 0; i < 10; i = i + 1:
     print("i = " + i)
 
 # Functions work like in Python, though currently no default values.
@@ -163,7 +163,7 @@ l.append(1)
 l.append(2)
 l.append(3)
 print("Length after: " + len(l))
-for j = 0, j < len(l), j = j + 1:
+for j = 0; j < len(l); j = j + 1:
     print("j=" + j + ", list[j]=" + l[j])
 
 print("Can we call properties of strings?".__len__()) # Of course we can.