rhg: Enable `rhg status` in most tests

This subcommand is disabled by default because of bugs that make some test fail.
Enable it in the rest of the tests in order to avoid regressing them.

As with `RHG_ON_UNSUPPORTED`, an environment variable is used instead of
a configuration file and `HGRCPATH` because some tests override `HGRCPATH`.

Running `unset RHG_STATUS` at the start of a test restores the default of
`rhg status` being disabled. Hopefully it can be increasingly removed
from test files as bugs are fixed.

Differential Revision: https://phab.mercurial-scm.org/D11756

rust/hg-core/src/config/config.rs

@@ -114,6 +114,7 b' impl Config {'
             b"rhg",
             b"fallback-executable",
         );
+        config.add_for_environment_variable("RHG_STATUS", b"rhg", b"status");
 
         // HGRCPATH replaces user config
         if opt_rc_path.is_none() {

tests/run-tests.py

@@ -3228,6 +3228,7 b' class TestRunner(object):'
             # output.
             osenvironb[b'RHG_ON_UNSUPPORTED'] = b'fallback'
             osenvironb[b'RHG_FALLBACK_EXECUTABLE'] = real_hg
+            osenvironb[b'RHG_STATUS'] = b'1'
         else:
             # drop flag for hghave
             osenvironb.pop(b'RHG_INSTALLED_AS_HG', None)

tests/test-basic.t

@@ -1,3 +1,7 b''
+TODO: fix rhg bugs that make this test fail when status is enabled
+  $ unset RHG_STATUS
+
+
 Create a repository:
 
 #if no-extraextensions

tests/test-conflict.t

@@ -1,3 +1,7 b''
+TODO: fix rhg bugs that make this test fail when status is enabled
+  $ unset RHG_STATUS
+
+
   $ hg init
   $ cat << EOF > a
   > Small Mathematical Series.

tests/test-dirstate.t

@@ -9,6 +9,10 b''
   > EOF
 #endif
 
+TODO: fix rhg bugs that make this test fail when status is enabled
+  $ unset RHG_STATUS
+
+
 ------ Test dirstate._dirs refcounting
 
   $ hg init t

tests/test-encode.t

@@ -1,3 +1,7 b''
+TODO: fix rhg bugs that make this test fail when status is enabled
+  $ unset RHG_STATUS
+
+
 Test encode/decode filters
 
   $ hg init

tests/test-execute-bit.t

@@ -1,5 +1,9 b''
 #require execbit
 
+TODO: fix rhg bugs that make this test fail when status is enabled
+  $ unset RHG_STATUS
+
+
   $ hg init
   $ echo a > a
   $ hg ci -Am'not executable'

tests/test-hgignore.t

@@ -9,6 +9,10 b''
   > EOF
 #endif
 
+TODO: fix rhg bugs that make this test fail when status is enabled
+  $ unset RHG_STATUS
+
+
   $ hg init ignorerepo
   $ cd ignorerepo
 

tests/test-import.t

@@ -1,3 +1,7 b''
+TODO: fix rhg bugs that make this test fail when status is enabled
+  $ unset RHG_STATUS
+
+
   $ hg init a
   $ mkdir a/d1
   $ mkdir a/d1/d2

tests/test-issue6528.t

@@ -2,6 +2,10 b''
 Test non-regression on the corruption associated with issue6528
 ===============================================================
 
+TODO: fix rhg bugs that make this test fail when status is enabled
+  $ unset RHG_STATUS
+
+
 Setup
 =====
 

tests/test-merge-exec.t

@@ -4,6 +4,9 b' Testing merge involving change to the ex'
 
 #require execbit
 
+TODO: fix rhg bugs that make this test fail when status is enabled
+  $ unset RHG_STATUS
+
 
 Initial setup
 ==============

tests/test-merge-types.t

@@ -1,5 +1,9 b''
 #require symlink execbit
 
+TODO: fix rhg bugs that make this test fail when status is enabled
+  $ unset RHG_STATUS
+
+
   $ tellmeabout() {
   > if [ -h $1 ]; then
   >     echo $1 is a symlink:

tests/test-permissions.t

@@ -11,6 +11,10 b''
   > EOF
 #endif
 
+TODO: fix rhg bugs that make this test fail when status is enabled
+  $ unset RHG_STATUS
+
+
   $ hg init t
   $ cd t
 

tests/test-rename-dir-merge.t

@@ -1,3 +1,7 b''
+TODO: fix rhg bugs that make this test fail when status is enabled
+  $ unset RHG_STATUS
+
+
   $ hg init t
   $ cd t
 

tests/test-status-color.t

@@ -1,3 +1,7 b''
+TODO: fix rhg bugs that make this test fail when status is enabled
+  $ unset RHG_STATUS
+
+
   $ cat <<EOF >> $HGRCPATH
   > [ui]
   > color = always

tests/test-status-terse.t

@@ -1,3 +1,7 b''
+TODO: fix rhg bugs that make this test fail when status is enabled
+  $ unset RHG_STATUS
+
+
   $ mkdir folder
   $ cd folder
   $ hg init

tests/test-status.t

@@ -9,6 +9,10 b''
   > EOF
 #endif
 
+TODO: fix rhg bugs that make this test fail when status is enabled
+  $ unset RHG_STATUS
+
+
   $ hg init repo1
   $ cd repo1
   $ mkdir a b a/1 b/1 b/2

tests/test-subrepo-deep-nested-change.t

@@ -1,3 +1,7 b''
+TODO: fix rhg bugs that make this test fail when status is enabled
+  $ unset RHG_STATUS
+
+
   $ cat >> $HGRCPATH <<EOF
   > [extdiff]
   > # for portability:

tests/test-subrepo-missing.t

@@ -1,3 +1,7 b''
+TODO: fix rhg bugs that make this test fail when status is enabled
+  $ unset RHG_STATUS
+
+
   $ hg init repo
   $ cd repo
   $ hg init subrepo

tests/test-symlinks.t

@@ -11,6 +11,10 b''
   > EOF
 #endif
 
+TODO: fix rhg bugs that make this test fail when status is enabled
+  $ unset RHG_STATUS
+
+
 == tests added in 0.7 ==
 
   $ hg init test-symlinks-0.7; cd test-symlinks-0.7;