svn annotate question

Hi !

I have some doubt about the behaviour of "svn annotate", hopefully
someone can enlighten me.

Is this assertion true ?
    When "svn annotate" outputs a line with: $REV $USER $LINE
    it means that $REV is the biggest number so that "diff -r$((REV -
1)):$REV"
    outputs a line containing "+$LINE"

If this assertion should be true, then I have an example in which it's
false. I am sorry, it's
a bit contrived but I didn't manage to extract a simpler case. The
problems lies within the
line named "9", the remaining is noise, or not ? I am using
subversion-1.1.1 on linux.

So here it is :

[g ~/svn]$ svnadmin create repo # It happens both with bdb and fsfs
[g ~/svn]$ bzcat svn_dump.bz2 | svnadmin load -q repo # The attachment
[g ~/svn]$ svn annotate file://$PWD/repo/file
     5 g 0
     8 g 1
     7 g 3
     4 g 4
     2 g 6
     1 g 7
     8 g 8
     8 g 9 <============== So the line "9" was changed in r8
     3 g 15
     8 g 17
     6 g 18
[g ~/svn]$ svn diff -r7:8 file://$PWD/repo/file
Index: file
===================================================================
--- file (revision 7)
+++ file (revision 8)
@@ -1,9 +1,11 @@
 0
-j
+1
 3
 4
 6
 7
+8
 9 <============== Seems not
 15
+17
 18
[g ~/svn]$ svn cat -r1 file://$PWD/repo/file
j
7
9 <============== It was there since the beginning

[g ~/svn]$ svn diff -r1:8 file://$PWD/repo/file
Index: file
===================================================================
--- file (revision 1)
+++ file (revision 8)
@@ -1,4 +1,11 @@
-j
+0
+1
+3
+4
+6
 7
+8
 9
-
+15
+17
+18

My intuition is that the line algorithm used by diff is not the same as
the one used by annotate,
thus the discrepancy, but I hope I am wrong.

Thanks for any help.

-- 
Guillaume

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