Re: [PATCH] describe-doc: clarify default length of abbreviation
From: Bagas Sanjaya <hidden>
Date: 2021-05-16 12:00:21
On 16/05/21 14.32, Anders Höckersten via GitGitGadget wrote: > --abbrev=<n>::
- Instead of using the default 7 hexadecimal digits as the - abbreviated object name, use <n> digits, or as many digits - as needed to form a unique object name. An <n> of 0 - will suppress long format, only showing the closest tag. + Instead of using the default number of hexadecimal digits (which + will vary according to the size of the repository with a default of + 7) of the abbreviated object name, use <n> digits, or as many digits + as needed to form a unique object name. An <n> of 0 will suppress + long format, only showing the closest tag.
I think the more correct is the abbreviated hash length is determined by number of objects.
quoted hunk ↗ jump to hunk
--candidates=<n>:: Instead of considering only the 10 most recent tags as@@ -139,8 +140,11 @@ at the end. The number of additional commits is the number of commits which would be displayed by "git log v1.0.4..parent". -The hash suffix is "-g" + unambiguous abbreviation for the tip commit -of parent (which was `2414721b194453f058079d897d13c4e377f92dc6`). +The hash suffix is "-g" + an unambigous abbreviation for the tip commit +of parent (which was `2414721b194453f058079d897d13c4e377f92dc6`). The +length of the abbreviation scales as the repository grows, using the +approximate number of objects in the repository and a bit of math +around the birthday paradox, and defaults to a minimum of 7.
What is the birthday paradox then? Also, better say "... and by default the minimum length is 7.". Thanks. -- An old man doll... just what I always wanted! - Clara