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mercurial/revset.py
changeset 37264 d2c912836465
parent 37084 f0b6fbea00cf
child 37271 0194dac77c93 
--- a/mercurial/revset.py	Mon Apr 02 09:06:24 2018 -0700
+++ b/mercurial/revset.py	Mon Apr 02 09:16:52 2018 -0700
@@ -116,6 +116,8 @@
 # operator methods
 
 def stringset(repo, subset, x, order):
+    if not x:
+        raise error.ParseError(_("empty string is not a valid revision"))
     x = scmutil.intrev(repo[x])
     if (x in subset
         or x == node.nullrev and isinstance(subset, fullreposet)):
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