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Re: [PATCH 03/20] blame doc: explicitly note how --abbrev=40 gives 39 chars

Ævar Arnfjörð Bjarmason  <avarab@xxxxxxxxx> writes:

> In a later change I'm adding stress testing of the commit abbreviation
> as it relates to git-blame and others, and initially thought that the
> inability to extract full SHA-1s from the non-"--porcelain" output was
> a bug.

... meaning that it is not actually a bug, as the output format
other than porcelain is for human consumption?

> --- a/Documentation/git-blame.txt
> +++ b/Documentation/git-blame.txt
> @@ -88,6 +88,11 @@ include::blame-options.txt[]
>  	Instead of using the default 7+1 hexadecimal digits as the
>  	abbreviated object name, use <n>+1 digits. Note that 1 column
>  	is used for a caret to mark the boundary commit.

This is outside the scope of this patch, but is the above 7+1 still
current or do we need updating it for the (not so) recent change to
auto-scale the default abbreviation width?

> ++
> +Because of this UI design, the only way to get the full SHA-1 of the
> +boundary commit is to use the `--porcelain` format. With `--abbrev=40`
> +only 39 characters of the boundary SHA-1 will be emitted, since one
> +will be used for the caret to mark the boundary.