Mercurial > hg
view tests/cgienv @ 38486:4c0683655599
namespaces: let namespaces override singlenode() definition
Some namespaces have multiple nodes per name (meaning that their
namemap() returns multiple nodes). One such namespace is the "topics"
namespace (from the evolve repo). We also have our own internal
namespace at Google (for review units) that has multiple nodes per
name. These namespaces may not want to use the default "pick highest
revnum" resolution that we currently use when resolving a name to a
single node. As an example, they may decide that `hg co <name>` should
check out a commit that's last in some sense even if an earlier commit
had just been amended and thus had a higher revnum [1]. This patch
gives the namespace the option to continue to return multiple nodes
and to override how the best node is picked. Allowing namespaces to
override that may also be useful as an optimization (it may be cheaper
for the namespace to find just that node).
I have been arguing (in D3715) for using all the nodes returned from
namemap() when resolving the symbol to a revset, so e.g. `hg log -r
stable` would resolve to *all* nodes on stable, not just the one with
the highest revnum (except that I don't actually think we should
change it for the branch namespace because of BC). Most people seem
opposed to that. If we decide not to do it, I think we can deprecate
the namemap() function in favor of the new singlenode() (I find it
weird to have namespaces, like the branch namespace, where namemap()
isn't nodemap()'s inverse). I therefore think this patch makes sense
regardless of what we decide on that issue.
[1] Actually, even the branch namespace would have wanted to override
singlenode() if it had supported multiple nodes. That's because
closes branch heads are mostly ignored, so "hg co default" will
not check out the highest-revnum node if that's a closed head.
Differential Revision: https://phab.mercurial-scm.org/D3852
author | Martin von Zweigbergk <martinvonz@google.com> |
---|---|
date | Tue, 26 Jun 2018 10:02:01 -0700 |
parents | aa3f726a2bdb |
children |
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DOCUMENT_ROOT="/var/www/hg"; export DOCUMENT_ROOT GATEWAY_INTERFACE="CGI/1.1"; export GATEWAY_INTERFACE HTTP_ACCEPT="text/xml,application/xml,application/xhtml+xml,text/html;q=0.9,text/plain;q=0.8,image/png,*/*;q=0.5"; export HTTP_ACCEPT HTTP_ACCEPT_CHARSET="ISO-8859-1,utf-8;q=0.7,*;q=0.7"; export HTTP_ACCEPT_CHARSET HTTP_ACCEPT_ENCODING="gzip,deflate"; export HTTP_ACCEPT_ENCODING HTTP_ACCEPT_LANGUAGE="en-us,en;q=0.5"; export HTTP_ACCEPT_LANGUAGE HTTP_CACHE_CONTROL="max-age=0"; export HTTP_CACHE_CONTROL HTTP_CONNECTION="keep-alive"; export HTTP_CONNECTION HTTP_HOST="hg.omnifarious.org"; export HTTP_HOST HTTP_KEEP_ALIVE="300"; export HTTP_KEEP_ALIVE HTTP_USER_AGENT="Mozilla/5.0 (X11; U; Linux x86_64; en-US; rv:1.8.0.4) Gecko/20060608 Ubuntu/dapper-security Firefox/1.5.0.4"; export HTTP_USER_AGENT PATH_INFO="/"; export PATH_INFO PATH_TRANSLATED="/var/www/hg/index.html"; export PATH_TRANSLATED QUERY_STRING=""; export QUERY_STRING REMOTE_ADDR="127.0.0.2"; export REMOTE_ADDR REMOTE_PORT="44703"; export REMOTE_PORT REQUEST_METHOD="GET"; export REQUEST_METHOD REQUEST_URI="/test/"; export REQUEST_URI SCRIPT_FILENAME="/home/hopper/hg_public/test.cgi"; export SCRIPT_FILENAME SCRIPT_NAME="/test"; export SCRIPT_NAME SCRIPT_URI="http://hg.omnifarious.org/test/"; export SCRIPT_URI SCRIPT_URL="/test/"; export SCRIPT_URL SERVER_ADDR="127.0.0.1"; export SERVER_ADDR SERVER_ADMIN="eric@localhost"; export SERVER_ADMIN SERVER_NAME="hg.omnifarious.org"; export SERVER_NAME SERVER_PORT="80"; export SERVER_PORT SERVER_PROTOCOL="HTTP/1.1"; export SERVER_PROTOCOL SERVER_SIGNATURE="<address>Apache/2.0.53 (Fedora) Server at hg.omnifarious.org Port 80</address>"; export SERVER_SIGNATURE SERVER_SOFTWARE="Apache/2.0.53 (Fedora)"; export SERVER_SOFTWARE