view tests/test-init.out @ 8849:80cc4b1a62d0

compare grep result between target and its parent

I found that typical case is that grep target is added at (*) revision
in the tree shown below.

     +--- 1(*) --- 3
     0
     +--- 2 ------ 4

Now, I expect 'hg grep --all' to show only rev:1 which is first
appearance of target line.

But 'hg grep --all' will tell:

  target line dis-appeared at 3 => 4
  target line     appeared at 2 => 3
  target line dis-appeared at 1 => 2
  target line     appeared at 0 => 1

because current 'hg grep' implementation compares not between target
revision and its parent, but between neighbor revisions in walkthrough
order.

I checked performance of this patch by "hg grep --follow --all
walkchangerevs" on whole Mercurial repo, and patched version could
complete as fast as un-patched one.

# creating 'local'
store created
00changelog.i created
revlogv1
store
fncache
adding foo
# creating repo with format.usestore=false
revlogv1
# creating repo with format.usefncache=false
store created
00changelog.i created
revlogv1
store
#test failure
abort: repository local already exists!
# init+push to remote2
comparing with local
changeset:   0:c4e059d443be
tag:         tip
user:        test
date:        Mon Jan 12 13:46:40 1970 +0000
summary:     init

pushing to ssh://user@dummy/remote2
searching for changes
remote: adding changesets
remote: adding manifests
remote: adding file changes
remote: added 1 changesets with 1 changes to 1 files
# clone to remote1
searching for changes
remote: adding changesets
remote: adding manifests
remote: adding file changes
remote: added 1 changesets with 1 changes to 1 files
# init to existing repo
abort: repository remote1 already exists!
abort: could not create remote repo!
# clone to existing repo
abort: repository remote1 already exists!
abort: could not create remote repo!
# output of dummyssh
Got arguments 1:user@dummy 2:hg init remote2
Got arguments 1:user@dummy 2:hg -R remote2 serve --stdio
Got arguments 1:user@dummy 2:hg -R remote2 serve --stdio
Got arguments 1:user@dummy 2:hg init remote1
Got arguments 1:user@dummy 2:hg -R remote1 serve --stdio
Got arguments 1:user@dummy 2:hg init remote1
Got arguments 1:user@dummy 2:hg init remote1
# comparing repositories
0:c4e059d443be
0:c4e059d443be
0:c4e059d443be
# check names for repositories (clashes with URL schemes, special chars)
# hg init "bundle"
ok
# hg init "file"
ok
# hg init "hg"
ok
# hg init "http"
ok
# hg init "https"
ok
# hg init "old-http"
ok
# hg init "ssh"
ok
# hg init "static-http"
ok
# hg init " "
ok
# hg init "with space"
ok