[PATCH] stty: document the 'status' character where supported

[Pádraig Brady]

* src/stty.c (usage): On systems that support this setting (BSD),
display 'status' in the list of adjustable special characters.
* doc/coreutils.texi (stty invocation): Mention the option, and that
its not currently supported on Linux.
---
 doc/coreutils.texi | 4 ++++
 src/stty.c         | 5 +++++
 2 files changed, 9 insertions(+)

diff --git a/doc/coreutils.texi b/doc/coreutils.texi
index 078bca3..1d6f9d8 100644
--- a/doc/coreutils.texi
+++ b/doc/coreutils.texi
@@ -14447,6 +14447,10 @@ Alternate character to toggle discarding of output.  
Non-POSIX.
 @opindex swtch
 Switch to a different shell layer.  Non-POSIX.
 
+@item status
+@opindex status
+Send an info signal.  Not currently supported on Linux.  Non-POSIX.
+
 @item start
 @opindex start
 Restart the output after stopping it.
diff --git a/src/stty.c b/src/stty.c
index f3fb714..ecff2d3 100644
--- a/src/stty.c
+++ b/src/stty.c
@@ -574,6 +574,11 @@ Special characters:\n"), stdout);
  * lnext CHAR    CHAR will enter the next character quoted\n\
 "), stdout);
 #endif
+#ifdef VSTATUS
+      fputs (_("\
+ * status CHAR   CHAR will send an info signal\n\
+"), stdout);
+#endif
       fputs (_("\
    quit CHAR     CHAR will send a quit signal\n\
 "), stdout);
-- 
2.1.0