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https://issues.apache.org/jira/browse/ARROW-6228?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16928537#comment-16928537
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Benjamin Kietzman commented on ARROW-6228:
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[~pitrou] [~xhochy] Context lines can make the precise indices of array
disagreements harder to read:
{code}
@@ -3, +3 @@
2
3
4
-5 # do mental math to figure out that this corresponds to element 6 of the base
6
7
8
{code}
Perhaps it would be better to always place the hunk header directly before
changes
{code}
... # elipsis at zero indent delimits hunks when context lines are present
2
3
4
@@ -6, +6 @@
-5
6
7
8
...
{code}
> [C++] Add context lines to Diff formatting
> ------------------------------------------
>
> Key: ARROW-6228
> URL: https://issues.apache.org/jira/browse/ARROW-6228
> Project: Apache Arrow
> Issue Type: New Feature
> Components: C++
> Reporter: Benjamin Kietzman
> Assignee: Benjamin Kietzman
> Priority: Trivial
>
> Diff currently renders only inserted or deleted elements, but context lines
> can be helpful to viewers of the diff. Add an option for configurable context
> line count to Diff and EqualOptions
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