test: fix typo in test-help.t

templatekw: remove unneeded showtags Now that we have the machinery of namespaces in-place, we use that instead of hand-rolling our own template function. Note, this can only be used for tags because both branches and bookmarks have special case logic for 'default' and the current bookmark (which is something outside the namespace api for now).

namespaces: generate template keyword when registering a namespace For any namespace, we generate a template keyword. For example, given a namespace 'babar', we automatically have the ability to use it in a template: hg log -r . -T '{babars % "King: {babar}\n"}' Furthermore, we only generate this keyword for a namespace if one doesn't already exist. This is necessary for 'branches' and 'bookmarks' since both of those have concepts of 'current' (something outside the namespace api) and also allows extensions to override default behavior if desired.

templatekw: add helper method to generate a template keyword for a namespace This marks our second feature of the namespace api: automatic template keyword. This patch adds a method that takes in a namespace and uses the node-to-name map to output the list of names.

namespaces: add names method to return list of names for a given node In the previous patch, we added a node-to-name map property. This patch just exposes that interface to the api.

namespaces: add nodemap property This patch adds a node-to-name map property to the namespace. This is necessary because we cannot simply invert the name-to-node map because we do not assume the name-to-node map to be unique (for example, consider named branches: many nodes have one branch name). The node-to-name is helpful in log commands where we are already iterating over a set of nodes and want to display some kind of naming information to the user.