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Re: [PATCH 2/4] builtin/rev-parse: learn --null-oid

From
Junio C Hamano <gitster@pobox.com>
Date
Sep 18, 2020, 18:16 UTC
Message-ID
<xmqqy2l7kl0p.fsf@gitster.c.googlers.com>
In-Reply-To
<20200918141614.GC1602321@nand.local>
Taylor Blau <me@ttaylorr.com> writes:
> In either case, I think '--zero-oid' makes more sense than '--null-oid'
> (and it matches the tests that are already written). The pair
> '--zero-oid' and '--empty-oid=<type>' make sense to me.

I am not sure rev-parse should even know about "empty-oid". An end user or a script who wants to learn what name an empty blob has can and should ask "git hash-object -t blob --stdin </dev/null".

I can buy --zero-oid might be handy, but don't see a pressing need if it is merely to support our test suite and sample hooks. Instead, something like

  ZERO_OID=$(git hash-object --stdin </dev/null | tr '[0-9a-f]' '0')
should suffice, no?
Take this as a mild indifference, not as a strong rejection.
Previous: Taylor BlauNext: Taylor Blau
Message 5 of 23 in “sample hooks: become hash agnostic”
  1. 0/4 sample hooks: become hash agnosticDenton Liu, Sep 18, 2020
  2. 2/4 builtin/rev-parse: learn --null-oidDenton Liu, Sep 18, 2020
  3. Taylor BlauSep 18, 2020
  4. Taylor BlauSep 18, 2020
  5. Junio C HamanoSep 18, 2020
  6. Taylor BlauSep 18, 2020
  7. brian m. carlsonSep 18, 2020
  8. Chris TorekSep 20, 2020
  9. brian m. carlsonSep 20, 2020
  10. Taylor BlauSep 20, 2020
  11. Andreas SchwabSep 20, 2020
  12. 1/4 hooks--pre-push.sample: prefer $() for command substitutionDenton Liu, Sep 18, 2020
  13. Eric SunshineSep 18, 2020
  14. 3/4 hooks--pre-push.sample: use hash-agnostic null OIDDenton Liu, Sep 18, 2020
  15. Eric SunshineSep 18, 2020
  16. 4/4 hooks--update.sample: use hash-agnostic null OIDDenton Liu, Sep 18, 2020
  17. Eric SunshineSep 18, 2020
  18. brian m. carlsonSep 18, 2020
  19. 0/3 sample hooks: become hash agnosticDenton Liu, Sep 23, 2020
  20. 1/3 hooks--pre-push.sample: modernize scriptDenton Liu, Sep 23, 2020
  21. 3/3 hooks--update.sample: use hash-agnostic zero OIDDenton Liu, Sep 23, 2020
  22. 2/3 hooks--pre-push.sample: use hash-agnostic zero OIDDenton Liu, Sep 23, 2020
  23. Junio C HamanoSep 23, 2020

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