Re: Microproject | Add more builtin patterns for userdiff

[Jacob Keller <jacob.keller@gmail.com>]

On Tue, Mar 28, 2017 at 3:46 AM, Pickfire <pickfire@riseup.net> wrote:
> While I was working buildins shell patterns for user diffs. I noticed that
> the tests t4034 passes but I can reproduce it manually with:
>
>     mkdir cpp/ && cd cpp/ && git init
>
>     cat > pre <<EOF
>     Foo():x(0&&1){}
>     cout<<"Hello World!\n"<<endl;
>     1 -1e10 0xabcdef 'x'
>     [a] a->b a.b
>     !a ~a a++ a-- a*b a&b
>     a*b a/b a%b
>     a+b a-b
>     a<<b a>>b
>     a<b a<=b a>b a>=b
>     a==b a!=b
>     a&b
>     a^b
>     a|b
>     a&&b
>     a||b
>     a?b:z
>     a=b a+=b a-=b a*=b a/=b a%=b a<<=b a>>=b a&=b a^=b a|=b
>     a,y
>     a::b
>     EOF
>
>     cat > post <<EOF
>     Foo() : x(0&42) { bar(x); }
>     cout<<"Hello World?\n"<<endl;
>     (1) (-1e10) (0xabcdef) 'y'
>     [x] x->y x.y
>     !x ~x x++ x-- x*y x&y
>     x*y x/y x%y
>     x+y x-y
>     x<<y x>>y
>     x<y x<=y x>y x>=y
>     x==y x!=y
>     x&y
>     x^y
>     x|y
>     x&&y
>     x||y
>     x?y:z
>     x=y x+=y x-=y x*=y x/=y x%=y x<<=y x>>=y x&=y x^=y x|=y
>     x,y
>     x::y
>     EOF
>
>     echo '* diff="cpp"' > .gitmodules
>     git diff --no-index --color-words pre post > output
>
> Surprisingly, it shows (which is very different from the expected output):
>

The diff test code uses "test_decode_color" function which decodes the
color commands into human readable text. From the looks of it, you're
trying to reproduce the test outside the test suite. However, you're
not decoding the colors using the test library function, so it doesn't
look right.

Thanks,
Jake