view tests/test-convert-tla.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.

% create tla archive
% initialize tla repo
* creating version tla@mercurial--convert/tla--test--0
* imported tla@mercurial--convert/tla--test--0
% create initial files
A/ .arch-ids
A/ src
A/ src/.arch-ids
A  .arch-ids/a.id
A  a
A  src/.arch-ids/=id
A  src/.arch-ids/b.id
A  src/b
* update pristine tree (tla@mercurial--convert/tla--test--0--base-0 => tla--test--0--patch-1)
* committed tla@mercurial--convert/tla--test--0--patch-1
% create link file and modify a
A  src/.arch-ids/a-link.id
A  src/a-link
M  a
* update pristine tree (tla@mercurial--convert/tla--test--0--patch-1 => tla--test--0--patch-2)
* committed tla@mercurial--convert/tla--test--0--patch-2
% create second link and modify b
A  src/.arch-ids/a-link-2.id
A  src/a-link-2
Mb src/b
* update pristine tree (tla@mercurial--convert/tla--test--0--patch-2 => tla--test--0--patch-3)
* committed tla@mercurial--convert/tla--test--0--patch-3
% b file to link and a-link-2 to regular file
fl src/b
lf src/a-link-2
* update pristine tree (tla@mercurial--convert/tla--test--0--patch-3 => tla--test--0--patch-4)
* committed tla@mercurial--convert/tla--test--0--patch-4
% move a-link-2 file and src directory
D/ src/.arch-ids
A/ test/.arch-ids
/> src	test
=> src/.arch-ids/a-link-2.id	.arch-ids/c.id
=> src/a-link-2	c
=> src/.arch-ids/=id	test/.arch-ids/=id
=> src/.arch-ids/a-link.id	test/.arch-ids/a-link.id
=> src/.arch-ids/b.id	test/.arch-ids/b.id
* update pristine tree (tla@mercurial--convert/tla--test--0--patch-4 => tla--test--0--patch-5)
* committed tla@mercurial--convert/tla--test--0--patch-5
% converting tla repo to Mercurial
initializing destination tla-repo-hg repository
analyzing tree version tla@mercurial--convert/tla--test--0...
scanning source...
sorting...
converting...
5 initial import
4 added a file, src and src/b (binary)
3 added link to a and modify a
2 added second link and modify b
1 file to link and link to file test
0 move and rename a-link-2 file and src directory
% show graph log
o  5 "move and rename a-link-2 file and src directory" files: c src/a-link src/a-link-2 src/b test/a-link test/b
|
o  4 "file to link and link to file test" files: src/a-link-2 src/b
|
o  3 "added second link and modify b" files: src/a-link-2 src/b
|
o  2 "added link to a and modify a" files: a src/a-link
|
o  1 "added a file, src and src/b (binary)" files: a src/b
|
o  0 "initial import" files:

c4072c4b72e1cabace081888efa148ee80ca3cbb 644   a
623942606de842342ac7b221ae9ccabc13b5d8c8 644   c
43b4308708a4b36340566684df2e2a074b12ceb0 644 @ test/a-link
73773e3389ef7ec5a070519b74895d2eaa4ad5db 644 @ test/b