color: document the possibility to colourise tabs in diffs This is a no-op change that simply suggests that tabs can be colourised, but defaults to no colour effects for tabs. This complements cset c343557a8442. Like the similar effects for phases from f8e2aebbb24c, we set the default effects to '' instead of None, so that this is a true noop change. Otherwise, the diff.tab effect would override (i.e. neutralise) the effect of the surrounding label.

contrib/synthrepo: walk a repo's directory structure during analysis Augments the analyze command to additionally walk the repo's current directory structure (or of any directory tree), counting how many files appear in which paths. This data is saved in the repo model to be used by synthesize, for creating an initial commit with many files. This change is aimed at developing, testing and measuring scaling improvements when importing/converting a large repository to mercurial.

contrib/synthrepo: generate initial repo contents using directory shape model Augments the synthesize command to use an additional parameter to the analyzed repo model: the number of files in each directory at a given snapshot. Before synthesizing history, an arbitrary number of files will be generated in a distribution matching the analyzed directory structure. Intended for developing, testing and measuring scaling improvements when importing/converting a large repository to Mercurial.