Re: Inconsistent results of git blame --porcelain when detecting copies from other files

> The simplest way (IMHO) to parse --porcelain output is:
>
>   - maintain a mapping of commit sha1s to the commit's details
>
>   - whenever you see a "<sha1> <line_nr> <orig_nr> [<size-of-hunk>]"
>     line, any key-value fields which follow impact _only_ that sha1, and
>     you should update the details for that map entry
>
>   - when you see the actual tab-indented line content, you have gotten
>     all of the key-value updates for that sha1. You can now safely do
>     what you like with the line entry.