From 439effc455d5306b9be0faeb99e5d1f88d10b820 Mon Sep 17 00:00:00 2001
From: Marcello Stanisci <stanisci.m@gmail.com>
Date: Fri, 17 May 2019 17:49:55 +0200
Subject: invert logic.

---
 configure.ac | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/configure.ac b/configure.ac
index ccd791f..46924a1 100644
--- a/configure.ac
+++ b/configure.ac
@@ -66,8 +66,8 @@ fi
 # Check for minifier
 #
 AC_MSG_CHECKING([jsmin])
-$PYTHON -m jsmin | grep -v "No module named" > /dev/null
-if test $? -ne 0;
+$PYTHON -m jsmin | grep "No module named" > /dev/null
+if test $? -eq 0;
   then
   AC_MSG_ERROR([Please install Python3 module 'jsmin'])
 fi
-- 
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