使用已移动的子存储库更新到旧的 Mercurial 修订版
我们的项目中有几个远程子存储库，它们的地址最近从 http://host/path 移动到 http://other_host/path。如何返回到上个月的修订版本，Mercurial 认为可以在 http://host/path 找到子存储库？
$ hg -v up -d 1/20/2012
Found revision 1091 from Fri Jan 20 10:22:29 2012 -0600
resolving manifests
abort: error: No connection could be made because the target machine actively refused it
$ hg --debug up -d 1/20/2012
Found revision 1091 from Fri Jan 20 10:22:29 2012 -0600
resolving manifests
<snip...>
subrepo merge 0f0f2b807811+ 0908d5249a6f 0f0f2b807811
subrepo external/our_remote_repo: both sides changed, merge with https://old_host/external/our_remote_repo:c66cf52ce1f240193190cec392d889618c09f22b:hg
using https://old_host/external/our_remote_repo
sending capabilities command
using auth.old_host.* for authentication
abort: error: No connection could be made because the target machine actively refused it
Our project has a couple of remote subrepos in it, and their addresses have recently moved from http://host/path to http://other_host/path. How can one go back to a revision from, say, last month, where Mercurial thinks the subrepo can be found at http://host/path?
$ hg -v up -d 1/20/2012
Found revision 1091 from Fri Jan 20 10:22:29 2012 -0600
resolving manifests
abort: error: No connection could be made because the target machine actively refused it
$ hg --debug up -d 1/20/2012
Found revision 1091 from Fri Jan 20 10:22:29 2012 -0600
resolving manifests
<snip...>
subrepo merge 0f0f2b807811+ 0908d5249a6f 0f0f2b807811
subrepo external/our_remote_repo: both sides changed, merge with https://old_host/external/our_remote_repo:c66cf52ce1f240193190cec392d889618c09f22b:hg
using https://old_host/external/our_remote_repo
sending capabilities command
using auth.old_host.* for authentication
abort: error: No connection could be made because the target machine actively refused it
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根据 文档，您可以使用 hgrc 中的 [subpaths] 重新映射此类网址。
这归结为定义子存储库源位置重写规则的形式，
其中模式是与源匹配的正则表达式，替换是用于重写它的替换字符串。组可以在模式中匹配并在替换中引用。例如：
重写
According to documentation you can use [subpaths] in hgrc to remap such urls.
This boils down to defining subrepositories source locations rewriting rules in the form of
where pattern is a regular expression matching the source and replacement is the replacement string used to rewrite it. Groups can be matched in pattern and referenced in replacements. For instance:
rewrites
你做不到。 Mercurial 返回本次修订版的状态（子存储库的 URL，子存储库中的修订版）
You can't do it. Mercurial returns in the state, which it had exactly at this revision (URL of subrepo, revision in subrepo)