Re: Find commit that referenced a blob first
On Thu, Jul 19, 2018 at 3:38 PM Junio C Hamano wrote: > > If the given object refers to a blob, it will be described as > > :, > > such that the blob can be found at in the , which itself > > describes the first commit in which this blob occurs in a reverse > > revision walk from HEAD. > > You walk from the latest to earlier commit (because there by > definition can be is no reverse pointer from older to newer commit), but a "reverse walk from HEAD" produces the commits to us in an order as if we were walking from earlier to latest?
Re: Find commit that referenced a blob first
Stefan Beller writes: > On Thu, Jul 19, 2018 at 2:02 PM Lars Schneider > wrote: >> >> Hi, >> >> I have a blob hash and I would like to know what commit referenced >> this blob first in a given Git repo. > > git describe > > If the given object refers to a blob, it will be described as > :, > such that the blob can be found at in the , which itself > describes the first commit in which this blob occurs in a reverse > revision walk from HEAD. You walk from the latest to earlier commit (because there by definition can be is no reverse pointer from older to newer commit), and see if it has the blob, and stop when you find one. Wouldn't it generally find the most recent use, not the earliest use as Lars seems to want? > > Since > 644eb60bd01 (builtin/describe.c: describe a blob, 2017-11-15) > (included first in 2.16.0 > > You're welcome, > Stefan
Re: Find commit that referenced a blob first
On Thu, Jul 19, 2018 at 02:19:34PM -0700, Stefan Beller wrote: > > I have a blob hash and I would like to know what commit referenced > > this blob first in a given Git repo. > > git describe > > If the given object refers to a blob, it will be described as > :, > such that the blob can be found at in the , which itself > describes the first commit in which this blob occurs in a reverse > revision walk from HEAD. > > Since > 644eb60bd01 (builtin/describe.c: describe a blob, 2017-11-15) > (included first in 2.16.0 Hmm. $ git describe cfbc47ee2d fatal: No tags can describe '83adac3c57ad8cd2c8d44b525414b949950e316d'. Try --always, or create some tags. $ git describe --always cfbc47ee2d 83adac3c57:checkout-cache.c That first output confused me for a moment. We can't produce a nice descriptive name for the commit in question, so we punt on the whole thing. Anyway. I have found your diff --find-object to be more useful in practice. I.e.: git log --find-object=cfbc47ee2d because I usually care less about a succinct name, and more about digging into the history (so adding "-p", etc). -Peff
Re: Find commit that referenced a blob first
> On Jul 19, 2018, at 11:19 PM, Stefan Beller wrote: > > On Thu, Jul 19, 2018 at 2:02 PM Lars Schneider > wrote: >> >> Hi, >> >> I have a blob hash and I would like to know what commit referenced >> this blob first in a given Git repo. > > git describe > > If the given object refers to a blob, it will be described as > :, > such that the blob can be found at in the , which itself > describes the first commit in which this blob occurs in a reverse > revision walk from HEAD. > > Since > 644eb60bd01 (builtin/describe.c: describe a blob, 2017-11-15) > (included first in 2.16.0 > > You're welcome, > Stefan Awesome! Thank you very much :-) - Lars
Re: Find commit that referenced a blob first
On Thu, Jul 19, 2018 at 2:02 PM Lars Schneider wrote: > > Hi, > > I have a blob hash and I would like to know what commit referenced > this blob first in a given Git repo. git describe If the given object refers to a blob, it will be described as :, such that the blob can be found at in the , which itself describes the first commit in which this blob occurs in a reverse revision walk from HEAD. Since 644eb60bd01 (builtin/describe.c: describe a blob, 2017-11-15) (included first in 2.16.0 You're welcome, Stefan
