ObjFW  Diff

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- (OFString*)stringByPrependingString: (OFString*)string
{
	OFMutableString *new = [[string mutableCopy] autorelease];

	[new appendString: self];

	[new makeImmutable];

	return new;
}

- (OFString*)stringByReplacingOccurrencesOfString: (OFString*)string
				       withString: (OFString*)replacement
{
	OFMutableString *new = [[self mutableCopy] autorelease];

	[new replaceOccurrencesOfString: string
			     withString: replacement];

	[new makeImmutable];

	return new;
}

- (OFString*)uppercaseString
{