$ echo "[extensions]" >> $HGRCPATH

  $ echo "autodiff=$TESTDIR/autodiff.py" >> $HGRCPATH

  $ echo "[diff]" >> $HGRCPATH

  $ echo "nodates=1" >> $HGRCPATH

  $ hg init repo

  $ cd repo

make a combination of new, changed and deleted file

  $ echo regular > regular

  $ echo rmregular > rmregular

  $ touch rmempty

  $ echo exec > exec

  $ chmod +x exec

  $ echo rmexec > rmexec

  $ chmod +x rmexec

  $ echo setexec > setexec

  $ echo unsetexec > unsetexec

  $ chmod +x unsetexec

  $ echo binary > binary

  $ python -c "file('rmbinary', 'wb').write('\0')"

  $ hg ci -Am addfiles

  adding binary

  adding exec

  adding regular

  adding rmbinary

  adding rmempty

  adding rmexec

  adding rmregular

  adding setexec

  adding unsetexec

  $ echo regular >> regular

  $ echo newregular >> newregular

  $ rm rmempty

  $ touch newempty

  $ rm rmregular

  $ echo exec >> exec

  $ echo newexec > newexec

  $ chmod +x newexec

  $ rm rmexec

  $ chmod +x setexec

  $ chmod -x unsetexec

  $ python -c "file('binary', 'wb').write('\0\0')"

  $ python -c "file('newbinary', 'wb').write('\0')"

  $ rm rmbinary

  $ hg addremove -s 0

  adding newbinary

  adding newempty

  adding newexec

  adding newregular

  removing rmbinary

  removing rmempty

  removing rmexec

  removing rmregular

git=no: regular diff for all files

  $ hg autodiff --git=no

  diff -r b3f053cd7c7f binary

  Binary file binary has changed

  diff -r b3f053cd7c7f exec

  --- a/exec

  +++ b/exec

  @@ -1,1 +1,2 @@

   exec

  +exec

  diff -r b3f053cd7c7f newbinary

  Binary file newbinary has changed

  diff -r b3f053cd7c7f newexec

  --- /dev/null

  +++ b/newexec

  @@ -0,0 +1,1 @@

  +newexec

  diff -r b3f053cd7c7f newregular

  --- /dev/null

  +++ b/newregular

  @@ -0,0 +1,1 @@

  +newregular

  diff -r b3f053cd7c7f regular

  --- a/regular

  +++ b/regular

  @@ -1,1 +1,2 @@

   regular

  +regular

  diff -r b3f053cd7c7f rmbinary

  Binary file rmbinary has changed

  diff -r b3f053cd7c7f rmexec

  --- a/rmexec

  +++ /dev/null

  @@ -1,1 +0,0 @@

  -rmexec

  diff -r b3f053cd7c7f rmregular

  --- a/rmregular

  +++ /dev/null

  @@ -1,1 +0,0 @@

  -rmregular

git=yes: git diff for single regular file

  $ hg autodiff --git=yes regular

  diff --git a/regular b/regular

  --- a/regular

  +++ b/regular

  @@ -1,1 +1,2 @@

   regular

  +regular

git=auto: regular diff for regular files and removals

  $ hg autodiff --git=auto regular newregular rmregular rmbinary rmexec

  diff -r b3f053cd7c7f newregular

  --- /dev/null

  +++ b/newregular

  @@ -0,0 +1,1 @@

  +newregular

  diff -r b3f053cd7c7f regular

  --- a/regular

  +++ b/regular

  @@ -1,1 +1,2 @@

   regular

  +regular

  diff -r b3f053cd7c7f rmbinary

  Binary file rmbinary has changed

  diff -r b3f053cd7c7f rmexec

  --- a/rmexec

  +++ /dev/null

  @@ -1,1 +0,0 @@

  -rmexec

  diff -r b3f053cd7c7f rmregular

  --- a/rmregular

  +++ /dev/null

  @@ -1,1 +0,0 @@

  -rmregular

  $ for f in exec newexec setexec unsetexec binary newbinary newempty rmempty; do

  >     echo

  >     echo '% git=auto: git diff for' $f

  >     hg autodiff --git=auto $f

  > done

  % git=auto: git diff for exec

  diff -r b3f053cd7c7f exec

  --- a/exec

  +++ b/exec

  @@ -1,1 +1,2 @@

   exec

  +exec

  % git=auto: git diff for newexec

  diff --git a/newexec b/newexec

  new file mode 100755

  --- /dev/null

  +++ b/newexec

  @@ -0,0 +1,1 @@

  +newexec

  % git=auto: git diff for setexec

  diff --git a/setexec b/setexec

  old mode 100644

  new mode 100755

  % git=auto: git diff for unsetexec

  diff --git a/unsetexec b/unsetexec

  old mode 100755

  new mode 100644

  % git=auto: git diff for binary

  diff --git a/binary b/binary

  index a9128c283485202893f5af379dd9beccb6e79486..09f370e38f498a462e1ca0faa724559b6630c04f

  GIT binary patch

  literal 2

  Jc${Nk0000200961

  % git=auto: git diff for newbinary

  diff --git a/newbinary b/newbinary

  new file mode 100644

  index 0000000000000000000000000000000000000000..f76dd238ade08917e6712764a16a22005a50573d

  GIT binary patch

  literal 1

  Ic${MZ000310RR91

  % git=auto: git diff for newempty

  diff --git a/newempty b/newempty

  new file mode 100644

  % git=auto: git diff for rmempty

  diff --git a/rmempty b/rmempty

  deleted file mode 100644

git=warn: regular diff with data loss warnings

  $ hg autodiff --git=warn

  diff -r b3f053cd7c7f binary

  Binary file binary has changed

  diff -r b3f053cd7c7f exec

  --- a/exec

  +++ b/exec

  @@ -1,1 +1,2 @@

   exec

  +exec

  diff -r b3f053cd7c7f newbinary

  Binary file newbinary has changed

  diff -r b3f053cd7c7f newexec

  --- /dev/null

  +++ b/newexec

  @@ -0,0 +1,1 @@

  +newexec

  diff -r b3f053cd7c7f newregular

  --- /dev/null

  +++ b/newregular

  @@ -0,0 +1,1 @@

  +newregular

  diff -r b3f053cd7c7f regular

  --- a/regular

  +++ b/regular

  @@ -1,1 +1,2 @@

   regular

  +regular

  diff -r b3f053cd7c7f rmbinary

  Binary file rmbinary has changed

  diff -r b3f053cd7c7f rmexec

  --- a/rmexec

  +++ /dev/null

  @@ -1,1 +0,0 @@

  -rmexec

  diff -r b3f053cd7c7f rmregular

  --- a/rmregular

  +++ /dev/null

  @@ -1,1 +0,0 @@

  -rmregular

  data lost for: binary

  data lost for: newbinary

  data lost for: newempty

  data lost for: newexec

  data lost for: rmempty

  data lost for: setexec

  data lost for: unsetexec

git=abort: fail on execute bit change

  $ hg autodiff --git=abort regular setexec

  abort: losing data for setexec

git=abort: succeed on regular file

  $ hg autodiff --git=abort regular

  diff -r b3f053cd7c7f regular

  --- a/regular

  +++ b/regular

  @@ -1,1 +1,2 @@

   regular

  +regular

  $ cd ..