Github user dongjoon-hyun commented on the pull request: https://github.com/apache/spark/pull/12175#issuecomment-205902962 Hi, @srowen . I minimized the change on master. * Undo the changes on `common` module. * Implement `initCap` by the following changes. ``` override def nullSafeEval(string: Any): Any = { - string.asInstanceOf[UTF8String].toTitleCase + string.asInstanceOf[UTF8String].toLowerCase.toTitleCase } override def genCode(ctx: CodegenContext, ev: ExprCode): String = { - defineCodeGen(ctx, ev, str => s"$str.toTitleCase()") + defineCodeGen(ctx, ev, str => s"$str.toLowerCase().toTitleCase()") } ``` I think it's enough for `initCap` function as a small fix for now. How do you think about this?
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