diff --git a/mercurial/parser.py b/mercurial/parser.py
--- a/mercurial/parser.py
+++ b/mercurial/parser.py
@@ -65,7 +65,7 @@ class parser(object):
             # handle infix rules, take as suffix if unambiguous
             infix, suffix = self._elements[token][3:]
             if suffix and not (infix and self._hasnewterm()):
-                expr = (suffix[0], expr)
+                expr = (suffix, expr)
             elif infix:
                 expr = (infix[0], expr, self._parseoperand(*infix[1:]))
             else:
diff --git a/mercurial/revset.py b/mercurial/revset.py
--- a/mercurial/revset.py
+++ b/mercurial/revset.py
@@ -149,18 +149,16 @@ elements = {
     "(": (21, None, ("group", 1, ")"), ("func", 1, ")"), None),
     "##": (20, None, None, ("_concat", 20), None),
     "~": (18, None, None, ("ancestor", 18), None),
-    "^": (18, None, None, ("parent", 18), ("parentpost", 18)),
+    "^": (18, None, None, ("parent", 18), "parentpost"),
     "-": (5, None, ("negate", 19), ("minus", 5), None),
-    "::": (17, None, ("dagrangepre", 17), ("dagrange", 17),
-           ("dagrangepost", 17)),
-    "..": (17, None, ("dagrangepre", 17), ("dagrange", 17),
-           ("dagrangepost", 17)),
-    ":": (15, "rangeall", ("rangepre", 15), ("range", 15), ("rangepost", 15)),
+    "::": (17, None, ("dagrangepre", 17), ("dagrange", 17), "dagrangepost"),
+    "..": (17, None, ("dagrangepre", 17), ("dagrange", 17), "dagrangepost"),
+    ":": (15, "rangeall", ("rangepre", 15), ("range", 15), "rangepost"),
     "not": (10, None, ("not", 10), None, None),
     "!": (10, None, ("not", 10), None, None),
     "and": (5, None, None, ("and", 5), None),
     "&": (5, None, None, ("and", 5), None),
-    "%": (5, None, None, ("only", 5), ("onlypost", 5)),
+    "%": (5, None, None, ("only", 5), "onlypost"),
     "or": (4, None, None, ("or", 4), None),
     "|": (4, None, None, ("or", 4), None),
     "+": (4, None, None, ("or", 4), None),