push: extract future heads computation into pushop Bundle2 will allow pushing all different parts of the push in a single bundle. This mean that the discovery for each part needs to be done before trying to push. Currently we may have different behaviors for phases and obsolescence markers when the push of changesets fails. For example, information may still be exchanged for a part of the history where changesets are common but where phases mismatch. So the preparation of the push need to determine what information need to be pushed in both situations. And it needs a different set of heads for this. Therefore we are moving heads computation within pushop for easy access by all parties. We start with the simplest set of heads.

cmdutil: use '[committemplate]' section like as map file for style definition Before this patch, each template definitions for 'changeset*' in '[committemplate]' section have to be written fully from scratch, even though many parts of them may be common. This patch uses '[committemplate]' section like as the map file for the style definition. All items other than 'changeset' can be referred from others. This can reduce total cost of template customization in '[committemplate]' section. When the commit template other than '[committemplate] changeset' is chosen by 'editform', putting '[committemplate] changeset' value into the cache of the templater causes unexpected result, because the templater stores the specified (= chosen) template definition into own cache as 'changeset' at construction time. This is the reason why '[committemplate] changeset' can't be referred from others.

cmdutil: look commit template definition up by specified 'editform' Before this patch, '[committemplate] changeset' definition is shared between all actions invoking 'commitforceeditor()'. This prevents template definition from showing action specific messages: for example, 'hg tag --remove' may need specific message to call attention, but showing it may be redundant for other actions. This patch looks commit template definition up by specified 'editform' introduced by prior patches. 'editform' are dot-separated list of names, and treated as hierarchical one.

import: pass 'editform' argument to 'cmdutil.getcommiteditor' This patch passes 'editform' argument according to the format below: COMMAND[.ROUTE] - ROUTE: name of route, if there are two or more routes in COMMAND In this patch, 'normal' and 'bypass' are used as ROUTE.

commit: pass 'editform' argument to 'cmdutil.getcommiteditor' This patch passes 'editform' argument according to the format below: COMMAND[.ROUTE] - ROUTE: name of route, if there are two or more routes in COMMAND In this patch, 'normal' and 'amend' are used as ROUTE.

tag: pass 'editform' argument to 'cmdutil.getcommiteditor' This patch passes 'editform' argument according to the format below: COMMAND[.ROUTE] - ROUTE: name of route, if there are two or more routes in COMMAND In this patch, 'add' and 'remove' are used as ROUTE

graft: pass 'editform' argument to 'cmdutil.getcommiteditor' This patch passes 'editform' argument according to the format below: COMMAND[.ROUTE] - ROUTE: name of route, if there are two or more routes in COMMAND In this patch, ROUTE is omitted.

backout: pass 'editform' argument to 'cmdutil.getcommiteditor' This patch passes 'editform' argument according to the format below: COMMAND[.ROUTE] - ROUTE: name of route, if there are two or more routes in COMMAND In this patch, ROUTE is omitted..

transplant: pass 'editform' argument to 'cmdutil.getcommiteditor' This patch passes 'editform' argument according to the format below: EXTENSION[.COMMAND][.ROUTE] - EXTENSION: name of extension - COMMAND: name of command, if there are two or more commands in EXTENSION - ROUTE: name of route, if there are two or more routes in COMMAND In this patch, COMMAND and ROUTE are omitted.

shelve: pass 'editform' argument to 'cmdutil.getcommiteditor' This patch passes 'editform' argument according to the format below: EXTENSION[.COMMAND][.ROUTE] - EXTENSION: name of extension - COMMAND: name of command, if there are two or more commands in EXTENSION - ROUTE: name of route, if there are two or more routes in COMMAND In this patch: - 'shelve' is used as COMMAND - ROUTE is omitted