git combined diffs suffer from underflow

[edvbld]

Hi all,

seems like git diff -c --unified=0 also suffers from underflow, but not the off-by-one bug for empty hunks that git diff --unified=0 suffers from. I updated the code to work around this issue.

Testing

• sh gradlew test passes on Linux x86_64

Progress

• Change must not contain extraneous whitespace
• Change must be properly reviewed

Approvers

• Robin Westberg (rwestberg - Reviewer)

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[mlbridge]

Webrevs

• 00: Full (1a1813f)

[rwestberg]

Good stuff

[openjdk]

@edvbld This change can now be integrated. The commit message will be:

git combined diffs suffer from underflow

Reviewed-by: rwestberg

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[edvbld]

/integrate

[openjdk]

@edvbld Pushed as commit ef42f82.