revset: populate wdir() by its hash or revision number

It belongs to the same category as the null hash/revision, and we do handle
these virtual identifiers in id()/rev() predicates. Let's do that more
consistently.

mercurial/revset.py

@@ -123,8 +123,7 b' def stringset(repo, subset, x, order):'
     if not x:
         raise error.ParseError(_("empty string is not a valid revision"))
     x = scmutil.intrev(scmutil.revsymbol(repo, x))
-    if (x in subset
-        or x == node.nullrev and isinstance(subset, fullreposet)):
+    if x in subset or x in _virtualrevs and isinstance(subset, fullreposet):
         return baseset([x])
     return baseset()
 
@@ -2265,7 +2264,7 b' def _orderedlist(repo, subset, x):'
             if r in seen:
                 continue
             if (r in subset
-                or r == node.nullrev and isinstance(subset, fullreposet)):
+                or r in _virtualrevs and isinstance(subset, fullreposet)):
                 ls.append(r)
             seen.add(r)
     return baseset(ls)

tests/test-revset.t

@@ -1956,25 +1956,26 b' For tests consistency'
   2147483647
 
 Test working-directory integer revision and node id
-(BUG: '0:wdir()' is still needed to populate wdir revision)
 
-  $ hg debugrevspec '0:wdir() & 2147483647'
+  $ hg debugrevspec '2147483647'
   2147483647
-  $ hg debugrevspec '0:wdir() & rev(2147483647)'
+  $ hg debugrevspec 'rev(2147483647)'
+  2147483647
+  $ hg debugrevspec 'ffffffffffffffffffffffffffffffffffffffff'
   2147483647
-  $ hg debugrevspec '0:wdir() & ffffffffffffffffffffffffffffffffffffffff'
+  $ hg debugrevspec 'ffffffffffff'
   2147483647
-  $ hg debugrevspec '0:wdir() & ffffffffffff'
+  $ hg debugrevspec 'id(ffffffffffffffffffffffffffffffffffffffff)'
   2147483647
-  $ hg debugrevspec '0:wdir() & id(ffffffffffffffffffffffffffffffffffffffff)'
+  $ hg debugrevspec 'id(ffffffffffff)'
   2147483647
-  $ hg debugrevspec '0:wdir() & id(ffffffffffff)'
+  $ hg debugrevspec 'ffffffffffff+000000000000'
   2147483647
+  -1
 
   $ cd ..
 
 Test short 'ff...' hash collision
-(BUG: '0:wdir()' is still needed to populate wdir revision)
 
   $ hg init wdir-hashcollision
   $ cd wdir-hashcollision
@@ -2000,21 +2001,21 b" Test short 'ff...' hash collision"
   $ hg debugobsolete fffbae3886c8fbb2114296380d276fd37715d571
   obsoleted 1 changesets
 
-  $ hg debugrevspec '0:wdir() & fff'
+  $ hg debugrevspec 'fff'
   abort: 00changelog.i@fff: ambiguous identifier!
   [255]
-  $ hg debugrevspec '0:wdir() & ffff'
+  $ hg debugrevspec 'ffff'
   abort: 00changelog.i@ffff: ambiguous identifier!
   [255]
-  $ hg debugrevspec '0:wdir() & fffb'
+  $ hg debugrevspec 'fffb'
   abort: 00changelog.i@fffb: ambiguous identifier!
   [255]
 BROKEN should be '2' (node lookup uses unfiltered repo)
-  $ hg debugrevspec '0:wdir() & id(fffb)'
+  $ hg debugrevspec 'id(fffb)'
 BROKEN should be '2' (node lookup uses unfiltered repo)
-  $ hg debugrevspec '0:wdir() & ffff8'
+  $ hg debugrevspec 'ffff8'
   4
-  $ hg debugrevspec '0:wdir() & fffff'
+  $ hg debugrevspec 'fffff'
   2147483647
 
   $ cd ..