Git component improvements

[TimothyGu]

--- and +++ should be highlighted as well, as they really make the entire output look nicer and easier to see the green lines are in this file.

This is especially important when highlighting plain diff files that are not generated by Git, because in that case the original and new file names are different.

Ping @lgiraudel, maintainer of the Git component.

[TimothyGu]

Any news on this PR? (Ping @lgiraudel again)

[lgiraudel]

Hi,

It's in my todo list to check it but I won't be able to merge it in master.

[LeaVerou]

That’s fine, I can merge it. I was just waiting for your feedback @lgiraudel :)

[lgiraudel]

Ok, I'll check the two commits today then.

[lgiraudel]

I don't know if in most console the filenames in git diff are in red and green but in the one I used as reference (bash console in ubuntu), the filenames are in white bold.

But we can apply the green / red color, it's not illogical...

[TimothyGu]

@lgiraudel although Git doesn't highlight it, most highlighting engine highlights it (and I feel it's better), including:

• Pygments
• GitHub linguist
• GNU nano

Even those that don't highlight the lines as red and green at least have some styles for these lines, including:

• Highlight.js
• vim
• SyntaxHighlighter

(there should be more)

I don't object to add some styles that are different from addition/deletion, but it seems to me that just using add/del colors is the simplest.