Fg-optional-arabic.bin

# Write each rule as: input_len (1B), inputs (4B each), output_len (1B), outputs (4B each), priority (1B) for rule in rules: inputs = rule['input'] outputs = rule['output'] if isinstance(rule['output'], list) else [rule['output']]

# Prepare header magic = b'FGOA' version = data['version'] rules = data['optional_features'] rule_count = len(rules) fg-optional-arabic.bin

def parse_header(self): self.magic = self.data[:4] self.version = int.from_bytes(self.data[4:8], 'little') self.rule_count = int.from_bytes(self.data[8:12], 'little') # ... parse rules When shaping Arabic text, after mandatory shaping, apply optional rules: # Write each rule as: input_len (1B), inputs