doc: Mention proper way to redirect to stdout

Patch originated from Debian package

Signed-off-by: Petr Vorel <petr.vorel@gmail.com>

diff --git a/bin/perltidy b/bin/perltidy
index 66dee3d1c251b73e5c8fccf48dd8c66c8bab96a5..9c9bfe529edf124e437dcc28c5111f30ccee418d 100755 (executable)
--- a/bin/perltidy
+++ b/bin/perltidy
@@ -175,7 +175,9 @@ Show summary of usage and exit.
 
 Name of the output file (only if a single input file is being
 processed).  If no output file is specified, and output is not
-redirected to the standard output, the output will go to F<filename.tdy>.
+redirected to the standard output (see B<-st>), the output will go to
+F<filename.tdy>. [Note: - does not redirect to standard output. Use
+B<-st> instead.]
 
 =item  B<-st>,    B<--standard-output>