GitHub – why two lines are marked as different without any visible differences?

Here’s the commit cba438 on Github.

As you can see line #1 in index.html is marked as changed:

But as I can see there’s no single changed character. Is it up to GitHub or Git? Is it a bug or some hidden character was changed?

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  • 2 Solutions collect form web for “GitHub – why two lines are marked as different without any visible differences?”

    Yes, there is a hidden character there, a UTF8 BOM.

    $ git show cba438:index.html | od -c | head -1
    0000000 357 273 277   <   !   d   o   c   t   y   p   e       h   t   m
    $ git show cba438~1:index.html | od -c | head -1
    0000000   <   !   d   o   c   t   y   p   e       h   t   m   l   >  \n
    

    Related SO question: What’s different between UTF-8 and UTF-8 without BOM?

    enter image description here

    Looks like a whitespace at the end of the deleted line.

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