clonebundle: move the manifest filename to a constant I am about to add more reference to it, so I would rather have it an explicit constant. This allow to unify various call too. Differential Revision: https://phab.mercurial-scm.org/D9209

clonebundles: move a bundle of clone bundle related code to a new module In the process on general clone bundle automatically, we need to make some function available more widely. This is a good opportunity to extract a significant amount of code from `mercurial.exchange` into a new `mercurial.bundlecaches`. This make `mercurial.exchange` move under the 3K line range (hooray…). The module is called `bundlecaches` because I expect it to be eventually useful for more than just clone bundle (like pull bunbles). Differential Revision: https://phab.mercurial-scm.org/D9208

config: add a .hg/hgrc-not-shared which won't be shared in share-safe mode Previous patches add a safe mode for sharing repositories which involve sharing of source requirements and config files. In certain situations we might need to add a config to source repository which we does not want to share. For this, we add a `.hg/hgrc-not-shared` which won't be shared. This also adds a `--non-shared` flag to `hg config` command to see the non-shared config. Differential Revision: https://phab.mercurial-scm.org/D8673

dispatch: load shared source repository config in share-safe mode It seems to me now that there are two steps when config is loaded: 1) on dispatch 2) repository object creation Recent patches added functionality that there can be shares in share-safe mode where config of the source repository is shared with the the shares. However we missed adding logic to read the source config on dispatch. This leads to extensions not being loaded on dispatch and hence extensions command not being recognized. This patch fixes it by reading the shared source config on dispatch. Differential Revision: https://phab.mercurial-scm.org/D9047

tests: add test showing broken extension loading in case of share-safe When we are using share-safe and loading source repository config, we are still not loading the extensions which are enabled in the source repository. This patch demonstrates the bug. Meanwhile it also shows how unreliable `hg debugextensions` is. Differential Revision: https://phab.mercurial-scm.org/D9046

dirstate-tree: simplify the control flow in the Node.insert method But explicitly with the special case early, laying out the various case become simpler. (The initial motivation was to make some future lifetime error simpler). Differential Revision: https://phab.mercurial-scm.org/D9203