[RFC] store inventory in tab-separated file

[Aaron Bentley]

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Martin Pool wrote:
> On  2 Feb 2007, Alexander Belchenko <bialix at ukr.net> wrote:
>
>>> My pet desire for a new inventory format is I'd like each of the values
>>> to be annotated individually, so that we can do a completely
>>> annotate-based merge.  (That works even with shallow branches that do
>>> not store their common base)
>> My initial attempt to create format of one entry like this:
>>
>> file	bzrignore-20050311232317-81f7b71efa2db11a	.bzrignore	TREE_ROOT
>>  	revision	xxxx
>>  	text_sha1	xxxx
>>  	text_size	xxxx
>>  	executable	yes
>>
>> If I understand you correctly you'd like to have this:
>>
>> file	bzrignore-20050311232317-81f7b71efa2db11a
>> 	name		.bzrignore
>> 	parent_id	TREE_ROOT
>>  	revision	xxxx
>>  	text_sha1	xxxx
>>  	text_size	xxxx
>>  	executable	yes
>>
>> Am I understand correctly this: "each of the values to be annotated individually"?
>>
>> This change complicate things a bit and probably slowdown read operation
>> because of additional checks but I try to test this implementation as well
>> to see real numbers.
>
> I'm not sure about Aaron, but I would think just having one line per
> file and seeing when it was last changed would be enough.

No, I actually meant each value, the way Alexander has it.  That's what
you'd need to do an annotate merge correctly.

Though I do see how it breaks file_ids_altered_by_revision_ids, so it
may not be desirable.

Aaron
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