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-rw-r--r--Src/init.c13
1 files changed, 8 insertions, 5 deletions
diff --git a/Src/init.c b/Src/init.c
index 799ad19f6..83b79d3d4 100644
--- a/Src/init.c
+++ b/Src/init.c
@@ -700,11 +700,14 @@ init_io(char *cmd)
* process group leader.
*/
mypid = (zlong)getpid();
- if (opts[MONITOR] && (SHTTY != -1)) {
- origpgrp = GETPGRP();
- acquire_pgrp(); /* might also clear opts[MONITOR] */
- } else
- opts[MONITOR] = 0;
+ if (opts[MONITOR]) {
+ if (SHTTY == -1)
+ opts[MONITOR] = 0;
+ else if (!origpgrp) {
+ origpgrp = GETPGRP();
+ acquire_pgrp(); /* might also clear opts[MONITOR] */
+ }
+ }
#else
opts[MONITOR] = 0;
#endif