filelog: allow censored files to contain padding data
To ensure delta compatibility, when a revision is censored, it is
padded to match the original data in size. The previous check does
not allow for padding because it was added before padding was found
to be a requirement.
For more background and design of the censorship feature, see:
mercurial.selenic.com/wiki/CensorPlan
#require execbit
$ hg init
$ echo a > a
$ hg ci -Am'not executable'
adding a
$ chmod +x a
$ hg ci -m'executable'
$ hg id
79abf14474dc tip
Make sure we notice the change of mode if the cached size == -1:
$ hg rm a
$ hg revert -r 0 a
$ hg debugstate
n 0 -1 unset a
$ hg status
M a
$ hg up 0
1 files updated, 0 files merged, 0 files removed, 0 files unresolved
$ hg id
d69afc33ff8a
$ test -x a && echo executable -- bad || echo not executable -- good
not executable -- good