Re: appending a pattern to the default "diff.cpp.xfuncname"

> On Wed, Aug 03, 2016 at 12:16:14PM +0200, Laszlo Ersek wrote:
> 
>> I've used diff.<TYPE>.xfuncname with great success for file <TYPE>s that
>> I defined myself. However, now I would like to append an extra pattern
>> to the TYPE=cpp case (for which git has builtin patterns). Is there an
>> easy way to do this?
>>
>> I figured I could open-code the builtin patterns from "userdiff.c", and
>> then append my new pattern to those, but it looks kinda gross :)
> 
> Unfortunately, no, the config system has no notion of "append to this
> value". So you are stuck with extracting the builtin value (which
> annoyingly, you cannot even get without looking at the source code!),
> and repeating it in your config file.