Preparing for the Multi-format-WC feature in Subversion 1.15

[Daniel Sahlberg]

Hi,

I've started to look at the Multi-format-WC feature that is expected to be part of Subversion 1.15.

Summary for those not reading the d...@subversion.apache.org mailing list; Previously, each release of Subversion was tied to a specific working copy format number. Between some client versions (latest by the release of 1.8.0) changes were made to the layout of the working copy (placement and content of the .svn folder). A particular WC could only be operated on by a client of the correct version, so using a 1.7 client (for example an IDE integrated client) and a 1.8 client (for example TortoiseSVN) on the same working copy would not work. There is an expectation that Subversion 1.15 will introduce a new WC format with some additional features (most prominent the ability to remove the "pristine" copy of each file, basically dividing the space requirement for a working copy in half at the expense of some additional network traffic). Since there is a trade-off in the new WC format it is expected that not everyone want to update, and even then some might be locked in to old clients that cannot be updated. Therefor, Subversion 1.15 will introduce a possibility to work with multiple WC formats within the same client.

There is a more in-depth description in the Subversion 1.15 release notes, draft version at [1].

I have started to look at implementing support for this feature in TortoiseSVN.

1. Is there someone else looking at it as well, so we can cooperate?

2. I would propose to create a /branches/multi-format-wc based on current /trunk. Any opinions?

Kind regards,

Daniel

[1] https://subversion-staging.apache.org/docs/release-notes/1.15.html

[Stefan]

a separate branch for this sounds good to me.