On Sun, Aug 14, 2016 at 2:21 PM, Junio C Hamano <gits...@pobox.com> wrote:
> Jacob Keller <jacob.kel...@gmail.com> writes:
>> On Fri, Aug 12, 2016 at 2:58 PM, Junio C Hamano <gits...@pobox.com> wrote:
>>> On Fri, Aug 12, 2016 at 2:43 PM, Jacob Keller <jacob.kel...@gmail.com> 
>>> wrote:
>>>> Ok so the big problem here is that unlike with diff which has support
>>>> for line-prefixes already due to needing it for graph mode, I can't
>>>> figure out where to get the prefix added for log output.
>>> Doesn't the --graph mode show the graph lines already? I think most
>>> if not all of that processing happens inside log-tree.c::show_log().
>> Yes but the problem is how to get this additional prefix to be displayed for
>> (a) non graph mode
>> (b) for graph mode but display the prefix before the graph prefix
>> It doesn't seem straight forward, and I haven't figured out how the
>> graph code already works.
> Because you only need "diff --line-prefix" to work while leaving
> "log --line-prefix" broken for the purpose of your immediate purpose
> to update "diff/log [--graph and other options] --submodule=<type>"
> to show "diff A B" in the submodule, I think it is OK to leave it
> broken, as long as it is clearly documented that "--line-prefix"
> should also apply to the log message part but the current code
> doesn't.  Eventually, when somebody wants to add a new <type> that
> runs "log -p A..B" instead of "diff A B" in submodules and wants to
> make it interact well with "log --graph" at the superproject level,
> they need to fix the breakage you leave behind.  That would be much
> better than "because I cannot figure out how to prefix on the log
> part, I'll name this --diff-line-prefix", which will force us to
> support that half-baked option forever while having to add a proper
> "--line-prefix" eventually anyway.

I will look more into how to do the log version tomorrow, if I am
still stuck I will re-work the patches as you suggest here.

I am hoping I can find a good solution for how to handle it though.

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