parse arithmetic binary expressions

std/io/io.hon

@@ -217,7 +217,7 @@ parse_format proc($N usize, $format []u8, $Args type) [N]mut FormatToken {
     token_count := 0
     argument_count := 0
     literal_start := 0
-    cursor usize := 0
+    cursor := 0
     while cursor < format.len {
         byte :: format[cursor]
         if byte == '{' {

std/testing/testing.hon

@@ -73,10 +73,10 @@ expect_type proc($Expected, $Actual type, _ Actual, location SourceLocation) voi
 
 run proc(name []u8, callback *proc() void ! Error) bool {
     callback() catch |_| {
-        debug.print("{s}...[failed]\n", {name,})
+        debug.print("{s} ... [\x1b[91mfailed\x1b[0m]\n", {name})
         return false
     }
-    debug.print("{s}...[ok]\n", {name,})
+    debug.print("{s} ... [\x1b[92mok\x1b[0m]\n", {name})
     return true
 }