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bug#61386: [PATCH] cp,mv,install: Disable sparse copy on macOS

From: George Valkov
Subject: bug#61386: [PATCH] cp,mv,install: Disable sparse copy on macOS
Date: Sat, 11 Feb 2023 22:39:29 +0200

> On 2023-02-11, at 8:19 PM, Paul Eggert <eggert@cs.ucla.edu> wrote:
> On 2023-02-10 17:27, George Valkov wrote:
>> I’d prefer a timestamp consistent with source.
> You can get that with 'cp -p' (or with 'cp --preserve=timestamps' etc.). So 
> this is not an issue of whether you can get what you prefer. It's merely an 
> issue about what cp's default behavior is, when the user doesn't specify 
> options.


> POSIX is reasonably clear that if you use plain cp to create a file, the 
> file's last-modified time should be the current time. And it's not just a 
> question of standards conformance: lots of real-world uses of 'cp' expect 
> this behavior. For example, people use plain 'cp' in Makefiles, and 'make' 
> relies on the last-modified time being the current time. If cp changed this 
> behavior, it'd break a lot of builds.

Ah, yes, make relays on timestamps. So we should update timestamp after clone 
by default.
Let me know when you have a patch without CLONE_ACL and I will test it.

Georgi Valkov
nano RTOS

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