diff_stats: use git's formatting of renames with common directories#4830
Merged
ethomson merged 2 commits intolibgit2:masterfrom Oct 7, 2018
Merged
diff_stats: use git's formatting of renames with common directories#4830ethomson merged 2 commits intolibgit2:masterfrom
ethomson merged 2 commits intolibgit2:masterfrom
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Until now, we didn't have any tests that verified that our format for renames in subdirectories is correct. While our current behaviour is no different than for renames that do not happen with a common prefix shared between old and new file name, we intend to change the format to instead match the format that upstream git uses. Add a test case for this to document our current behaviour and to show how the next commit will change that format.
In cases where a file gets renamed such that the directories containing
it previous and after the rename have a common prefix, then git will
avoid printing this prefix twice and instead format the rename as
"prefix/{old => new}". We currently didn't do anything like that, but
simply printed "prefix/old -> prefix/new".
Adjust our behaviour to instead match upstream. Adjust the test for this
behaviour to expect the new format.
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In cases where a file gets renamed such that the directories containing
it previous and after the rename have a common prefix, then git will
avoid printing this prefix twice and instead format the rename as
"prefix/{old => new}". We currently didn't do anything like that, but
simply printed "prefix/old -> prefix/new".
Adjust our behaviour to instead match upstream. Adjust the test for this
behaviour to expect the new format.
I recommend to go through both commits. The first one introduces just a test case, while the second one changes that test case to demonstrate how the commit changes the output format of diff stats.
Fixes #4826