alsamixer: Use isatty() to check the terminal (interactive) availability

Signed-off-by: Jaroslav Kysela <perex@perex.cz>

diff --git a/alsamixer/cli.c b/alsamixer/cli.c
index bb4f030031d6cb38431cf6437021c5ec2b706f4d..3f8f52f03d4deef9b22cf91e8b99568f38af79a0 100644 (file)
--- a/alsamixer/cli.c
+++ b/alsamixer/cli.c
@@ -115,6 +115,9 @@ fail:
 
 int main(int argc, char *argv[])
 {
+       if (!isatty(fileno(stdin)))
+               return 0;
+
        setlocale(LC_ALL, "");
 #ifdef ENABLE_NLS_IN_CURSES
        textdomain(PACKAGE);