help: add internals.extensions topic
I think it's better to include the API overview in core as we now have the
internals section in our help system.
Retrieved from the wiki, and formatted as reST. Several wiki links are
removed since they are invalid in the help. The sections about example
extension are removed at all as they seemed too verbose.
https://www.mercurial-scm.org/wiki/WritingExtensions
#testcases flat tree
#testcases lfs-on lfs-off
#if lfs-on
$ cat >> $HGRCPATH <<EOF
> [extensions]
> lfs =
> EOF
#endif
$ . "$TESTDIR/narrow-library.sh"
#if tree
$ cat << EOF >> $HGRCPATH
> [experimental]
> treemanifest = 1
> EOF
#endif
$ hg init master
$ cd master
$ cat >> .hg/hgrc <<EOF
> [narrow]
> serveellipses=True
> EOF
$ for x in `$TESTDIR/seq.py 0 10`
> do
> mkdir d$x
> echo $x > d$x/f
> hg add d$x/f
> hg commit -m "add d$x/f"
> done
$ hg log -T "{rev}: {desc}\n"
10: add d10/f
9: add d9/f
8: add d8/f
7: add d7/f
6: add d6/f
5: add d5/f
4: add d4/f
3: add d3/f
2: add d2/f
1: add d1/f
0: add d0/f
$ cd ..
Error if '.' or '..' are in the directory to track.
$ hg clone --narrow ssh://user@dummy/master foo --include ./asdf
abort: "." and ".." are not allowed in narrowspec paths
[255]
$ hg clone --narrow ssh://user@dummy/master foo --include asdf/..
abort: "." and ".." are not allowed in narrowspec paths
[255]
$ hg clone --narrow ssh://user@dummy/master foo --include a/./c
abort: "." and ".." are not allowed in narrowspec paths
[255]
Names with '.' in them are OK.
$ hg clone --narrow ssh://user@dummy/master should-work --include a/.b/c
requesting all changes
adding changesets
adding manifests
adding file changes
added 1 changesets with 0 changes to 0 files
new changesets * (glob)
updating to branch default
0 files updated, 0 files merged, 0 files removed, 0 files unresolved
Test repo with local changes
$ hg clone --narrow ssh://user@dummy/master narrow-local-changes --include d0 --include d3 --include d6
requesting all changes
adding changesets
adding manifests
adding file changes
added 6 changesets with 3 changes to 3 files
new changesets *:* (glob)
updating to branch default
3 files updated, 0 files merged, 0 files removed, 0 files unresolved
$ cd narrow-local-changes
$ cat >> $HGRCPATH << EOF
> [experimental]
> evolution=createmarkers
> EOF
$ echo local change >> d0/f
$ hg ci -m 'local change to d0'
$ hg co '.^'
1 files updated, 0 files merged, 0 files removed, 0 files unresolved
$ echo local change >> d3/f
$ hg ci -m 'local hidden change to d3'
created new head
$ hg ci --amend -m 'local change to d3'
$ hg tracked --removeinclude d0
comparing with ssh://user@dummy/master
searching for changes
looking for local changes to affected paths
The following changeset(s) or their ancestors have local changes not on the remote:
* (glob)
abort: local changes found
(use --force-delete-local-changes to ignore)
[255]
Check that nothing was removed by the failed attempts
$ hg tracked
I path:d0
I path:d3
I path:d6
$ hg files
d0/f
d3/f
d6/f
$ find *
d0
d0/f
d3
d3/f
d6
d6/f
$ hg verify -q
Force deletion of local changes
$ hg log -T "{rev}: {desc} {outsidenarrow}\n"
8: local change to d3
6: local change to d0
5: add d10/f outsidenarrow
4: add d6/f
3: add d5/f outsidenarrow
2: add d3/f
1: add d2/f outsidenarrow
0: add d0/f
$ hg tracked --removeinclude d0 --force-delete-local-changes
comparing with ssh://user@dummy/master
searching for changes
looking for local changes to affected paths
The following changeset(s) or their ancestors have local changes not on the remote:
* (glob)
saved backup bundle to $TESTTMP/narrow-local-changes/.hg/strip-backup/*-narrow.hg (glob)
deleting data/d0/f.i (reporevlogstore !)
deleting meta/d0/00manifest.i (tree !)
deleting data/d0/f/362fef284ce2ca02aecc8de6d5e8a1c3af0556fe (reposimplestore !)
deleting data/d0/f/4374b5650fc5ae54ac857c0f0381971fdde376f7 (reposimplestore !)
deleting data/d0/f/index (reposimplestore !)
$ hg log -T "{rev}: {desc} {outsidenarrow}\n"
7: local change to d3
5: add d10/f outsidenarrow
4: add d6/f
3: add d5/f outsidenarrow
2: add d3/f
1: add d2/f outsidenarrow
0: add d0/f outsidenarrow
Can restore stripped local changes after widening
$ hg tracked --addinclude d0 -q
$ hg unbundle .hg/strip-backup/*-narrow.hg -q
$ hg --hidden co -r 'desc("local change to d0")' -q
$ cat d0/f
0
local change
Pruned commits affecting removed paths should not prevent narrowing
$ hg co '.^'
1 files updated, 0 files merged, 0 files removed, 0 files unresolved
$ hg debugobsolete `hg log -T '{node}' -r 'desc("local change to d0")'`
obsoleted 1 changesets
$ hg tracked --removeinclude d0
comparing with ssh://user@dummy/master
searching for changes
looking for local changes to affected paths
saved backup bundle to $TESTTMP/narrow-local-changes/.hg/strip-backup/*-narrow.hg (glob)
deleting data/d0/f.i (reporevlogstore !)
deleting meta/d0/00manifest.i (tree !)
deleting data/d0/f/362fef284ce2ca02aecc8de6d5e8a1c3af0556fe (reposimplestore !)
deleting data/d0/f/4374b5650fc5ae54ac857c0f0381971fdde376f7 (reposimplestore !)
deleting data/d0/f/index (reposimplestore !)
Updates off of stripped commit if necessary
$ hg co -r 'desc("local change to d3")' -q
$ echo local change >> d6/f
$ hg ci -m 'local change to d6'
$ hg tracked --removeinclude d3 --force-delete-local-changes
comparing with ssh://user@dummy/master
searching for changes
looking for local changes to affected paths
The following changeset(s) or their ancestors have local changes not on the remote:
* (glob)
* (glob)
2 files updated, 0 files merged, 0 files removed, 0 files unresolved
saved backup bundle to $TESTTMP/narrow-local-changes/.hg/strip-backup/*-narrow.hg (glob)
deleting data/d3/f.i (reporevlogstore !)
deleting meta/d3/00manifest.i (tree !)
deleting data/d3/f/2661d26c649684b482d10f91960cc3db683c38b4 (reposimplestore !)
deleting data/d3/f/99fa7136105a15e2045ce3d9152e4837c5349e4d (reposimplestore !)
deleting data/d3/f/index (reposimplestore !)
$ hg log -T '{desc}\n' -r .
add d10/f
Updates to nullid if necessary
$ hg tracked --addinclude d3 -q
$ hg co null -q
$ mkdir d3
$ echo local change > d3/f
$ hg add d3/f
$ hg ci -m 'local change to d3'
created new head
$ hg tracked --removeinclude d3 --force-delete-local-changes
comparing with ssh://user@dummy/master
searching for changes
looking for local changes to affected paths
The following changeset(s) or their ancestors have local changes not on the remote:
* (glob)
0 files updated, 0 files merged, 1 files removed, 0 files unresolved
saved backup bundle to $TESTTMP/narrow-local-changes/.hg/strip-backup/*-narrow.hg (glob)
deleting data/d3/f.i (reporevlogstore !)
deleting meta/d3/00manifest.i (tree !)
deleting data/d3/f/2661d26c649684b482d10f91960cc3db683c38b4 (reposimplestore !)
deleting data/d3/f/5ce0767945cbdbca3b924bb9fbf5143f72ab40ac (reposimplestore !)
deleting data/d3/f/index (reposimplestore !)
$ hg id
000000000000
$ cd ..
Can remove last include, making repo empty
$ hg clone --narrow ssh://user@dummy/master narrow-empty --include d0 -r 5
adding changesets
adding manifests
adding file changes
added 2 changesets with 1 changes to 1 files
new changesets *:* (glob)
updating to branch default
1 files updated, 0 files merged, 0 files removed, 0 files unresolved
$ cd narrow-empty
$ hg tracked --removeinclude d0
comparing with ssh://user@dummy/master
searching for changes
looking for local changes to affected paths
deleting data/d0/f.i (reporevlogstore !)
deleting meta/d0/00manifest.i (tree !)
deleting data/d0/f/362fef284ce2ca02aecc8de6d5e8a1c3af0556fe (reposimplestore !)
deleting data/d0/f/index (reposimplestore !)
$ hg tracked
$ hg files
[1]
$ test -d d0
[1]
Do some work in the empty clone
$ hg diff --change .
$ hg branch foo
marked working directory as branch foo
(branches are permanent and global, did you want a bookmark?)
$ hg ci -m empty
$ hg pull -q
Can widen the empty clone
$ hg tracked --addinclude d0
comparing with ssh://user@dummy/master
searching for changes
no changes found
saved backup bundle to $TESTTMP/narrow-empty/.hg/strip-backup/*-widen.hg (glob)
adding changesets
adding manifests
adding file changes
added 3 changesets with 1 changes to 1 files
new changesets *:* (glob)
$ hg tracked
I path:d0
$ hg files
d0/f
$ find *
d0
d0/f
$ cd ..
TODO(martinvonz): test including e.g. d3/g and then removing it once
https://bitbucket.org/Google/narrowhg/issues/6 is fixed
$ hg clone --narrow ssh://user@dummy/master narrow --include d0 --include d3 --include d6 --include d9
requesting all changes
adding changesets
adding manifests
adding file changes
added 8 changesets with 4 changes to 4 files
new changesets *:* (glob)
updating to branch default
4 files updated, 0 files merged, 0 files removed, 0 files unresolved
$ cd narrow
$ hg tracked
I path:d0
I path:d3
I path:d6
I path:d9
$ hg tracked --removeinclude d6
comparing with ssh://user@dummy/master
searching for changes
looking for local changes to affected paths
deleting data/d6/f.i (reporevlogstore !)
deleting meta/d6/00manifest.i (tree !)
deleting data/d6/f/7339d30678f451ac8c3f38753beeb4cf2e1655c7 (reposimplestore !)
deleting data/d6/f/index (reposimplestore !)
$ hg tracked
I path:d0
I path:d3
I path:d9
#if repofncache
$ hg debugrebuildfncache
fncache already up to date
#endif
$ find *
d0
d0/f
d3
d3/f
d9
d9/f
$ hg verify -q
$ hg tracked --addexclude d3/f
comparing with ssh://user@dummy/master
searching for changes
looking for local changes to affected paths
deleting data/d3/f.i (reporevlogstore !)
deleting data/d3/f/2661d26c649684b482d10f91960cc3db683c38b4 (reposimplestore !)
deleting data/d3/f/index (reposimplestore !)
$ hg tracked
I path:d0
I path:d3
I path:d9
X path:d3/f
#if repofncache
$ hg debugrebuildfncache
fncache already up to date
#endif
$ find *
d0
d0/f
d9
d9/f
$ hg verify -q
$ hg tracked --addexclude d0
comparing with ssh://user@dummy/master
searching for changes
looking for local changes to affected paths
deleting data/d0/f.i (reporevlogstore !)
deleting meta/d0/00manifest.i (tree !)
deleting data/d0/f/362fef284ce2ca02aecc8de6d5e8a1c3af0556fe (reposimplestore !)
deleting data/d0/f/index (reposimplestore !)
$ hg tracked
I path:d3
I path:d9
X path:d0
X path:d3/f
#if repofncache
$ hg debugrebuildfncache
fncache already up to date
#endif
$ find *
d9
d9/f
Make a 15 of changes to d9 to test the path without --verbose
(Note: using regexes instead of "* (glob)" because if the test fails, it
produces more sensible diffs)
$ hg tracked
I path:d3
I path:d9
X path:d0
X path:d3/f
$ for x in `$TESTDIR/seq.py 1 15`
> do
> echo local change >> d9/f
> hg commit -m "change $x to d9/f"
> done
$ hg tracked --removeinclude d9
comparing with ssh://user@dummy/master
searching for changes
looking for local changes to affected paths
The following changeset(s) or their ancestors have local changes not on the remote:
^[0-9a-f]{12}$ (re)
^[0-9a-f]{12}$ (re)
^[0-9a-f]{12}$ (re)
^[0-9a-f]{12}$ (re)
^[0-9a-f]{12}$ (re)
^[0-9a-f]{12}$ (re)
^[0-9a-f]{12}$ (re)
^[0-9a-f]{12}$ (re)
^[0-9a-f]{12}$ (re)
^[0-9a-f]{12}$ (re)
...and 5 more, use --verbose to list all
abort: local changes found
(use --force-delete-local-changes to ignore)
[255]
Now test it *with* verbose.
$ hg tracked --removeinclude d9 --verbose
comparing with ssh://user@dummy/master
searching for changes
looking for local changes to affected paths
The following changeset(s) or their ancestors have local changes not on the remote:
^[0-9a-f]{12}$ (re)
^[0-9a-f]{12}$ (re)
^[0-9a-f]{12}$ (re)
^[0-9a-f]{12}$ (re)
^[0-9a-f]{12}$ (re)
^[0-9a-f]{12}$ (re)
^[0-9a-f]{12}$ (re)
^[0-9a-f]{12}$ (re)
^[0-9a-f]{12}$ (re)
^[0-9a-f]{12}$ (re)
^[0-9a-f]{12}$ (re)
^[0-9a-f]{12}$ (re)
^[0-9a-f]{12}$ (re)
^[0-9a-f]{12}$ (re)
^[0-9a-f]{12}$ (re)
abort: local changes found
(use --force-delete-local-changes to ignore)
[255]