> > >One thing that Monotone doesn't do to which we are used to, is > > >$Id$-style keyword expansion. > > > > Monotone will never support such templating because it relies on SHA > > hashing to track the repo history, so changing the repo before the > > hashing would mean that monotone would have to track pre- and post- > > templated files.
Never say never. We presently don't have such a mechanism as a first class component, though it comes up as a feature request from time to time, and has a number of legitimate uses. (It's also not *as big* an issue as some people have come to expect from other VCSes - the use cases where you really want such a thing are rarer, but they still exist. Partial updates and mismatching checkouts don't really happen since we handle divergence in better ways, but files can still become detached from the tree and used elsewhere, for example.) We see this as another of a class of transformations on file content that might be performed between the workspace and the "canonical" database form. Other variations on this theme include platform-specific newlines, i18n character-set representations, and others -- up to and including code reindentation to a "project style", at least in some people's worldview. We had some limited special cases to handle some of this (eg, newlines) but they weren't very nice. Certainly, we avoided and resisted adding any more awkward special cases for some of these other wishes. We now also have much much nicer attribute handling than we used to when those were written; then, part of the problem we tried to resist was the complexity of marking which files should/should not get transformed. A well-designed, more general system of "content transformation filter hooks", perhaps keyed by mime-type and other attributes on the files, would be a worthy and welcome replacement. As long as the user responsibility to arrange for the filters to be reversible is met, so the transformation to workspace form and back again produces the same hash, monotone won't care. This would be a nice little side project for someone to contribute when they feel a strong need and motivation to do so. -- Dan.
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