diff --git a/src/pv/display.c b/src/pv/display.c
index 7fcf595..79d9d2f 100644
--- a/src/pv/display.c
+++ b/src/pv/display.c
@@ -23,6 +23,9 @@
 #include <termios.h>
 #endif
 
+/* Use tcsetpgrp() workaround - see issue #100 and comments below. */
+/* #define USE_TCSETPGRP 1 */
+
 /*
  * We need sys/ioctl.h for ioctl() regardless of whether TIOCGWINSZ is
  * defined in termios.h, so we no longer use AC_HEADER_TIOCGWINSZ in
@@ -66,7 +69,7 @@ bool pv_in_foreground(void)
 	pid_t tty_process_group;
 
 	if (0 == isatty(STDERR_FILENO)) {
-		debug("%s: true: %s", "pv_in_foreground", "not a tty");
+		debug("true: %s", "not a tty");
 		return true;
 	}
 
@@ -76,17 +79,84 @@ bool pv_in_foreground(void)
 	/*@+type@ */
 
 	if (tty_process_group == -1 && errno == ENOTTY) {
-		debug("%s: true: %s", "pv_in_foreground", "tty_process_group is -1, errno is ENOTTY");
+		debug("true: %s", "tty_process_group is -1, errno is ENOTTY");
 		return true;
 	}
 
 	if (our_process_group == tty_process_group) {
-		debug("%s: true: %s", "pv_in_foreground", "our_process_group == tty_process_group");
+		debug("true: %s (%d)", "our_process_group == tty_process_group", our_process_group);
 		return true;
 	}
+#if USE_TCSETPGRP
+	/*
+	 * If the terminal process group ID isn't our own process group ID,
+	 * then first check that the terminal process group ID actually
+	 * exists.
+	 */
 
-	debug("%s: false: our_process_group=%d, tty_process_group=%d",
-	      "pv_in_foreground", our_process_group, tty_process_group);
+	if (0 == kill(-tty_process_group, 0)) {
+		/*
+		 * If it does exist, then we're not in the foreground, so
+		 * return false.
+		 */
+		debug("false: our_process_group=%d, tty_process_group=(%d and confirmed to exist)",
+		      our_process_group, tty_process_group);
+	} else if (errno == ESRCH) {
+		/*
+		 * If it doesn't exist (kill(0) gave ESRCH), then try
+		 * setting the terminal process group ID back to our process
+		 * group ID, to forcibly put ourselves into the foreground
+		 * (see issue #100), and try reading it back again.  If we
+		 * successfully set it to our process group ID then we're in
+		 * the foreground, so return true; otherwise we can't be
+		 * sure we're in the foreground, so return false.
+		 *
+		 * This is because the manual says the function tcgetpgrp()
+		 * will return the foreground process group ID of that
+		 * terminal if there is one, and some value larger than 1
+		 * that is not presently a process group ID otherwise.
+		 *
+		 * The assumption we're making is that tcgetpgrp() can
+		 * return a non-pgid value if there's no pgid for this
+		 * terminal right now, implying that maybe we can just set
+		 * it to our own.
+		 */
+		debug("-: our_process_group=%d, tty_process_group=(%d which returned ESRCH)",
+		      our_process_group, tty_process_group);
+		/*@-type@ *//* __pid_t vs pid_t, not significant */
+		if (0 == tcsetpgrp(STDERR_FILENO, our_process_group)) {
+			tty_process_group = tcgetpgrp(STDERR_FILENO);
+			/*@+type@ */
+			if (our_process_group == tty_process_group) {
+				debug
+				    ("true: our_process_group == tty_process_group (after tcsetpgrp to change it to %d)",
+				     our_process_group);
+				return true;
+			}
+			debug("false: our_process_group=%d, tty_process_group=(%d even after tcsetpgrp)",
+			      our_process_group, tty_process_group);
+		} else {
+			debug("false: our_process_group=%d, tty_process_group=(%d and tcsetpgrp returned \"%s\")",
+			      our_process_group, tty_process_group, strerror(errno));
+		}
+	} else {
+		/*
+		 * We can't determine whether the terminal process group ID
+		 * exists, all we know is it doesn't match our own, so
+		 * assume we're in the background, and return false.
+		 */
+		debug("false: our_process_group=%d, tty_process_group=(%d, kill returned \"%s\")",
+		      our_process_group, tty_process_group, strerror(errno));
+	}
+
+#else
+	/*
+	 * Simply assume we're in the background, if the terminal process
+	 * group ID doesn't match our own.
+	 */
+	debug("false: our_process_group=%d, tty_process_group=%d, errno is %d",
+	      our_process_group, tty_process_group, (int) errno);
+#endif
 
 	return false;
 }