--- a/hgext3rd/evolve/templatekw.py	Sat Mar 07 01:36:33 2020 +0700
+++ b/hgext3rd/evolve/templatekw.py	Sat Mar 07 01:43:40 2020 +0700
@@ -22,36 +22,20 @@
 
 ### template keywords
 
-if util.safehasattr(templatekw, 'compatlist'):
-    @eh.templatekeyword(b'instabilities', requires={b'ctx', b'templ'})
-    def showinstabilities(context, mapping):
-        """List of strings. Evolution instabilities affecting the changeset
-        (zero or more of "orphan", "content-divergent" or "phase-divergent")."""
-        ctx = context.resource(mapping, b'ctx')
-        return templatekw.compatlist(context, mapping, b'instability',
-                                     ctx.instabilities(),
-                                     plural=b'instabilities')
+@eh.templatekeyword(b'instabilities', requires={b'ctx', b'templ'})
+def showinstabilities(context, mapping):
+    """List of strings. Evolution instabilities affecting the changeset
+    (zero or more of "orphan", "content-divergent" or "phase-divergent")."""
+    ctx = context.resource(mapping, b'ctx')
+    return templatekw.compatlist(context, mapping, b'instability',
+                                 ctx.instabilities(),
+                                 plural=b'instabilities')
 
-    @eh.templatekeyword(b'troubles', requires={b'ctx', b'templ'})
-    def showtroubles(context, mapping):   # legacy name for instabilities
-        ctx = context.resource(mapping, b'ctx')
-        return templatekw.compatlist(context, mapping, b'trouble',
-                                     ctx.instabilities(), plural=b'troubles')
-else:
-    # older template API in hg < 4.6
-    @eh.templatekeyword(b'instabilities')
-    def showinstabilities(**args):
-        """List of strings. Evolution instabilities affecting the changeset
-        (zero or more of "orphan", "content-divergent" or "phase-divergent")."""
-        ctx = args[b'ctx']
-        return templatekw.showlist(b'instability', ctx.instabilities(), args,
-                                   plural=b'instabilities')
-
-    @eh.templatekeyword(b'troubles')
-    def showtroubles(**args):
-        ctx = args[b'ctx']
-        return templatekw.showlist(b'trouble', ctx.instabilities(), args,
-                                   plural=b'troubles')
+@eh.templatekeyword(b'troubles', requires={b'ctx', b'templ'})
+def showtroubles(context, mapping):   # legacy name for instabilities
+    ctx = context.resource(mapping, b'ctx')
+    return templatekw.compatlist(context, mapping, b'trouble',
+                                 ctx.instabilities(), plural=b'troubles')
 
 _sp = templatekw.showpredecessors
 if util.safehasattr(_sp, '_requires'):