mercurial/debugcommands.py

--- a/mercurial/debugcommands.py	Sat Jun 09 18:00:26 2018 +0900
+++ b/mercurial/debugcommands.py	Sat Jun 09 18:26:04 2018 +0900
@@ -884,7 +884,7 @@
         tree = fileset.parse(expr)
         ui.note(fileset.prettyformat(tree), "\n")
 
-    for f in ctx.getfileset(expr):
+    for f in sorted(ctx.getfileset(expr)):
         ui.write("%s\n" % f)
 
 @command('debugformat',