# HG changeset patch
# User Yuya Nishihara <yuya@tcha.org>
# Date 2018-06-17 07:10:38
# Node ID b6294c113794794b6379d8520aeca86208f27658
# Parent  5b04a0c30f3f917d55ea2498a125871343e10aa7

templater: fix truth testing of integer 0 taken from a list/dict

Broken at f9c426385853. bool(python_value) shouldn't be used here since
an integer 0 has to be truthy for backward compatibility.

diff --git a/mercurial/templateutil.py b/mercurial/templateutil.py
--- a/mercurial/templateutil.py
+++ b/mercurial/templateutil.py
@@ -350,7 +350,8 @@ class hybriditem(mappable, wrapped):
         return gen
 
     def tobool(self, context, mapping):
-        return bool(self.tovalue(context, mapping))
+        w = makewrapped(context, mapping, self._value)
+        return w.tobool(context, mapping)
 
     def tovalue(self, context, mapping):
         return _unthunk(context, mapping, self._value)
diff --git a/tests/test-template-functions.t b/tests/test-template-functions.t
--- a/tests/test-template-functions.t
+++ b/tests/test-template-functions.t
@@ -932,6 +932,8 @@ Test boolean expression/literal passed t
   rev 0 is True
   $ hg log -r 0 -T '{if(0, "literal 0 is True as well")}\n'
   literal 0 is True as well
+  $ hg log -r 0 -T '{if(min(revset(r"0")), "0 of hybriditem is also True")}\n'
+  0 of hybriditem is also True
   $ hg log -r 0 -T '{if("", "", "empty string is False")}\n'
   empty string is False
   $ hg log -r 0 -T '{if(revset(r"0 - 0"), "", "empty list is False")}\n'