Hi Mark!

> The general policy is no bulk reformatting.

Cool!

> It’s fine to reformat lines that you otherwise change, 

Got it!

> There’s a tool called git-clang-format which makes it easy to run 
> clang-format but only touch the lines you’ve already modified.

Awesome, thanks!

Omeed

> On Apr 5, 2016, at 10:52 AM, Mark Lacey <mark.la...@apple.com> wrote:
> 
> 
>> On Apr 4, 2016, at 7:18 PM, Omeed Safaee-Rad via swift-dev 
>> <swift-dev@swift.org> wrote:
>> 
>> Hello Swift! :)
> 
> Hi Omeed,
> 
>> 
>> First off, thank you for the wonderful project!
>> 
>> I noticed that a number of C++ files in the Swift compiler could use a pass 
>> of clang-format. What is the general policy on this?
> 
> The general policy is no bulk reformatting.
> 
>> Given that clang-format can be invasive (affecting commit history - `git 
>> blame` that is), my understanding is that it’s use is on a case by case 
>> basis (if a file has a short history for example). Noticed this reasoning in 
>> a recent commit message (d03539c1277f4379d17afb6712bebc2c7ddf789a).
> 
> It’s fine to reformat lines that you otherwise change, but as you mention 
> going beyond that can make it more difficult to understand the history in a 
> file.
> 
> There’s a tool called git-clang-format which makes it easy to run 
> clang-format but only touch the lines you’ve already modified. It lives in 
> $SWIFT_SOURCE_ROOT/clang/tools/clang-format. By adding that to your PATH, 
> along with having clang-format itself in your path, you are able to reformat 
> the lines you have already changed by doing:
> 
>  git add files-i-have-changed.cpp
>  git clang-format
> 
> The result will be unstaged lines with the formatting changes, which you can 
> review with ‘git diff’ before staging those updated lines with ‘git add’.
> 
> Mark
> 
> 
>> If there is interest for such pull request(s), how should they be split up? 
>> Per file?
>> 
>> Sincerely,
>> 
>> Omeed
>> _______________________________________________
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>> swift-dev@swift.org
>> https://lists.swift.org/mailman/listinfo/swift-dev
> 

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