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assistant: Deal with upcoming git's refusal to merge unrelated histories by default

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git 2.8.1 (or perhaps 2.9.0) is going to prevent git merge from merging in
unrelated branches. Since the webapp's pairing etc features often combine
together repositories with unrelated histories, work around this behavior
change by setting GIT_MERGE_ALLOW_UNRELATED_HISTORIES when the assistant
merges.

Note though that this is not done for git annex sync's merges, so
it will follow git's default or configured behavior.
This commit is contained in:
Joey Hess 2016-04-22 14:26:44 -04:00
parent 8ab27235ea
commit 46e3319995
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9 changed files with 90 additions and 46 deletions
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doc/todo/support_--allow-unrelated-histories_in_git_2.8.1pre.mdwn
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@ -13,3 +13,7 @@ be split into a fetch and a merge in order to pass the option to the merge;
but AFAICS, git-annex never uses `git pull`)
--[[Joey]]
> [[done]]; used the environment variable
> `GIT_MERGE_ALLOW_UNRELATED_HISTORIES` which will hopefully land in git
> `next` (currently in `pu`) --[[Joey]]