Problem: prefix makes git history look like a list of problems

[anarcat]

I question the use of Problem: in the changelog summary. I believe it makes the commit history look like a list of bug instead of a list of solutions. It may be just semantic nitpicking but I prefer to see a summary of the solution in the summary, then details of the solution in the longer version of the commitlog. It seems to be a common standard as well: Linux, for example, mandates to "Describe the technical detail of the change(s) your patch includes." as opposed to the actual problem it resolves, which can still be refered to in the longer description. (source)

I understand where this is coming from, and maybe it's a good standard for an established project that is just fixing bugs, or that is used to that convention. But it is certainly surprising when coming from a more traditionnal background.

I would like to suggest turning that MUST into a SHOULD or MAY.

I agree, however, that a patch MUST adress an existing issue or known problem. It seems to me we already have something to that effect, however, earlier on (although it is "SHOULD be a minimal and accurate answer to exactly one identified and agreed problem" - maybe that should be a MUST?)

[bluca]

While I see your point and where it comes from, on the other hand I think "Problem: we cannot do X" is a valid statement that describes a feature.

[anarcat]

if you read the RFC, sure: otherwise it is just confusing. It looks like the commit introduces problem X, maybe as a corrolary.

when i saw the git history of this project, I didn't understand what the commitlogs meant until I read C4.

[hintjens]

We've adopted this over time as a successful pattern, and codified in the
RFC. There are a lot of surprising things in C4. Casting every change as a
problem is one I'd strongly prefer to keep. The MUST might be a SHOULD,
indeed.

On 23 Sep 2016 11:48 pm, "anarcat" notifications@github.com wrote:

if you read the RFC, sure: otherwise it is just confusing. It looks like
the commit introduces problem X, maybe as a corrolary.

when i saw the git history of this project, I didn't understand what the
commitlogs meant until I read C4.

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[sappo]

The Problem statement wields enormous power. At first you need to
recognize that every bug, every feature, every change and every idea is
essentially a problem. Thus having a list of solved problems comes
naturally. Using the Problem statement also sharpens the awareness
whether a feature, bug, change or idea is actually worth solving as it
is really easy to see if there is a need. Further it forces developers
to consciously fragment their work into a stream of small fixes rather
than one big with a rubbish commit message or even a listing.

From a maintainers perspective it allows us to quickly examine a pull
request and merge it in a manner of seconds or decline it if the
problem statement is false. And probably most important it is a
powerful tool to identify bad actors as they wont follow rules.

[hintjens]

You said it better than I could... :) Absolutely accurate.

On 24 Sep 2016 6:50 pm, "Kevin Sapper" notifications@github.com wrote:

The Problem statement wields enormous power. At first you need to
recognize that every bug, every feature, every change and every idea is
essentially a problem. Thus having a list of solved problems comes
natural. Using the Problem statement also sharpens the awareness
whether a feature, bug, change or idea is actually worth solving as it
is really easy to see if there is a need. Further it forces developers
to consciously fragment their work into a stream of small fixes rather
than one big with a rubbish commit message or even a listing.

From a maintainers perspective it allows us to quickly examine a pull
request and merge it in a manner of seconds or decline it if the
problem statement is false. And probably most important it is a
powerful tool to identify bad actors as they wont follow rules.

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[anarcat]

I absolutely agree with you about the usefulness of the "Problem" statement, and you make a great point at explaining why it is useful. I just don't think it's appropriate that it's the summary of the commit (the first line of the commit message). I think it should be a mandatory part of the message, but the summary should be just that: a summary of why something or what was done.

[hintjens]

Yes, opinion noted. We have evolved this specific style over years and used
it in many projects with success. We consider it foundational. We know it
is surprising to newcomers. So be it.

On 24 Sep 2016 10:31 pm, "anarcat" notifications@github.com wrote:

I absolutely agree with you about the usefulness of the "Problem"
statement, and you make a great point at explaining why it is useful.

I just don't think it's appropriate that it's the summary of the commit
(the first line of the commit message). I think it should be a mandatory
part of the message, but the summary should be just that: a summary of
why something or what was done.

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[sappo]

IMO, this issue is not a problem but exactly what we intended! Though feel
free to use C4 with your modifications towards commit messages in one of
your projects to see if it works and report back your experiences :)

Am 25.09.2016 00:37 schrieb "Pieter Hintjens" notifications@github.com:

Yes, opinion noted. We have evolved this specific style over years and
used
it in many projects with success. We consider it foundational. We know it
is surprising to newcomers. So be it.

On 24 Sep 2016 10:31 pm, "anarcat" notifications@github.com wrote:

I absolutely agree with you about the usefulness of the "Problem"
statement, and you make a great point at explaining why it is useful.

I just don't think it's appropriate that it's the summary of the commit
(the first line of the commit message). I think it should be a mandatory
part of the message, but the summary should be just that: a summary of
why something or what was done.

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[christianbundy]

Interesting -- we started using a development process derived from C4 in Oasis and I thought that the format was:

Replace foo with bar for Y

Problem: The foo module doesn't implement interface X, which we need for Y.
Solution: Remove the foo module and replace it with bar, which implements X via Z.

I've just looked at the ZeroMQ commit messages for the first time and noticed that it's not what we've been doing. I was also confused by the "Problem:" commit messages, but now understand that we've been Doing It Wrong Differently in our implementation.