tests/test-revert.out

use 'x is None' instead of 'x == None'

The built-in None object is a singleton and it is therefore safe to
compare memory addresses with is. It is also faster, how much depends
on the object being compared. For a simple type like str I get:

            | s = "foo" | s = None
  ----------+-----------+----------
  s == None | 0.25 usec | 0.21 usec
  s is None | 0.17 usec | 0.17 usec

%% should show b unknown
? b
%% should show b unknown and c modified
M c
? b
%% should show b added and c modified
M c
A b
%% should show a removed, b added and c modified
M c
A b
R a
%% should show b added, copy saved, and c modified
M c
A b
%% should show b unknown, and c modified
M c
? b
%% should show unknown: b
? b
%% should show b added
A b
%% should show b deleted
! b
forgetting b
%% should not find b
b: No such file or directory
%% should show a c e
a
c
e
%% should verbosely save backup to e.orig
saving current version of e as e.orig
reverting e
%% should say no changes needed
no changes needed to a
%% should say file not managed
file not managed: q
%% should say file not found
notfound: No such file in rev 095eacd0c0d7
A z
? e.orig
%% should add a, remove d, forget z
adding a
removing d
forgetting z
%% should forget a, undelete d
forgetting a
undeleting d
%% should silently add a
A a
R d
%% should silently keep d removed
R d
1 files updated, 0 files merged, 0 files removed, 0 files unresolved
reverting c
%% should print non-executable
non-executable
reverting c
%% should print executable
executable
%% issue 241
adding a
1 files updated, 0 files merged, 0 files removed, 0 files unresolved
% should fail - no arguments
abort: no files or directories specified; use --all to revert the whole repo
% should succeed
reverting a
%% issue332
adding b/b
created new head
reverting b/b
forgetting newdir/newfile
reverting b/b
% reverting a rename target should revert the source
? newa
%% 4 ignored files (we will add/commit everything)
I ignored
I ignoreddir/file
I ignoreddir/removed
I removed
%% should revert ignored* and undelete *removed
reverting ignored
reverting ignoreddir/file
undeleting ignoreddir/removed
undeleting removed
%% should silently revert the named files