Had I known yesterday that I would have another feature to blog about, I’d have skipped the previous post and put it all together in this…

Anyway, a new feature is now available in the current development version of MercurialEclipse, the Mercurial team plug-in for Eclipse: So called bookmarks.

The functionality is provided by the bookmarks extension, distributed together with Mercurial versions that are newer than 24.10.2008. So what are bookmarks? Have you heard of the complaint that Mercurial can’t do deleteable named branches within one clone? Don’t you want to clone to create a branch? Then the bookmark extension could be the solution for you. But keep in mind that bookmarks do not propagate to remote repositories. They are only available on your machine.

Bookmarks are pointers to specific heads. As with git local branches, they move with each commit and always point at the head. Update: There’s a nice introduction available at the blog of the extension’s author if you want to read more about the extension.

The dialog tab in the screenshot above allows you to create such bookmarks. If nothing is selected, it just sets the new bookmark to the tip revision. If you select a revision – I trust, you get it…

Contrary to named branches, bookmarks are local only and therefore aren’t under source control. This means, you can modify them as much as you like. Below you see our interface for renaming or deleting bookmarks.

Working with bookmarks is like using branches. On the command line you can use it wherever a revision needs to be specified. So we’ve extended our “Update to different changeset dialog…” to include bookmarks. The new tab looks like this:

Okay, that’s it for now. The next post about this follows when new features are available.