diff --git a/hgext/logtoprocess.py b/hgext/logtoprocess.py
--- a/hgext/logtoprocess.py
+++ b/hgext/logtoprocess.py
@@ -79,11 +79,16 @@
             else:
                 newsession = {'start_new_session': True}
             try:
-                # connect stdin to devnull to make sure the subprocess can't
-                # muck up that stream for mercurial.
+                # connect std* to devnull to make sure the subprocess can't
+                # muck up these stream for mercurial.
+                # Connect all the streams to be more close to Windows behavior
+                # and pager will wait for scripts to end if we don't do that
+                nullrfd = open(os.devnull, 'r')
+                nullwfd = open(os.devnull, 'w')
                 subprocess.Popen(
-                    script, shell=shell, stdin=open(os.devnull, 'r'), env=env,
-                    close_fds=True, **newsession)
+                    script, shell=shell, stdin=nullrfd,
+                    stdout=nullwfd, stderr=nullwfd,
+                    env=env, close_fds=True, **newsession)
             finally:
                 # mission accomplished, this child needs to exit and not
                 # continue the hg process here.
diff --git a/tests/test-logtoprocess.t b/tests/test-logtoprocess.t
--- a/tests/test-logtoprocess.t
+++ b/tests/test-logtoprocess.t
@@ -122,4 +122,4 @@
   $ touch $TESTTMP/wait-for-touched
   $ sleep 0.2
   $ test -f $TESTTMP/touched && echo "SUCCESS Pager is waiting on ltp" || echo "FAIL Pager is waiting on ltp"
-  FAIL Pager is waiting on ltp
+  SUCCESS Pager is waiting on ltp