revset: make negate work for sort specs

mercurial/revset.py

@@ -111,10 +111,6 b' def getset(repo, subset, x):'
 
 # operator methods
 
-def negate(repo, subset, x):
-    return getset(repo, subset,
-                  ('string', '-' + getstring(x, _("can't negate that"))))
-
 def stringset(repo, subset, x):
     x = repo[x].rev()
     if x == -1 and len(subset) == len(repo):
@@ -482,7 +478,6 b' symbols = {'
 }
 
 methods = {
-    "negate": negate,
     "range": rangeset,
     "string": stringset,
     "symbol": symbolset,
@@ -515,6 +510,9 b' def optimize(x, small):'
         return optimize(('range', ('string', '0'), x[1]), small)
     elif op == 'rangepost':
         return optimize(('range', x[1], ('string', 'tip')), small)
+    elif op == 'negate':
+        return optimize(('string',
+                         '-' + getstring(x[1], _("can't negate that"))), small)
     elif op in 'string symbol negate':
         return smallbonus, x # single revisions are small
     elif op == 'and' or op == 'dagrange':

tests/test-revset

@@ -133,3 +133,4 b" log 'not 2 and 0:2'"
 log '(1 and 2)::'
 log '(1 and 2):'
 log '(1 and 2):3'
+log 'sort(head(), -rev)'

tests/test-revset.out

@@ -210,3 +210,13 b' 1'
 % log '(1 and 2)::'
 % log '(1 and 2):'
 % log '(1 and 2):3'
+% log 'sort(head(), -rev)'
+9
+7
+6
+5
+4
+3
+2
+1
+0