From 76ddbec17c6084ab3333e4d5fa177241af1a91bb Mon Sep 17 00:00:00 2001
From: Steve Bennett <steveb@workware.net.au>
Date: Thu, 8 Aug 2019 20:32:40 +1000
Subject: aio: tty: allow setting echo

set-only
e.g. to disable echo on stdin: stdin tty echo 0

This allows disabling echo while otherwise keeping cooked mode.
Setting input to cooked or raw will overwrite this setting

Signed-off-by: Steve Bennett <steveb@workware.net.au>
---
 jim-aio.c   |  2 +-
 jim-tty.c   | 16 +++++++++++++++-
 jim_tcl.txt |  5 +++++
 3 files changed, 21 insertions(+), 2 deletions(-)

diff --git a/jim-aio.c b/jim-aio.c
index 5557797..ddfc486 100644
--- a/jim-aio.c
+++ b/jim-aio.c
@@ -1762,7 +1762,7 @@ static const jim_subcmd_type aio_command_table[] = {
 #endif
 #if defined(HAVE_TERMIOS_H)
     {   "tty",
-        "?baud rate? ?data bits? ?stop bits? ?parity even|odd|none? ?handshake xonxoff|rtscts|none? ?input raw|cooked? ?output raw|cooked? ?vmin n? ?vtime n?",
+        "?baud rate? ?data bits? ?stop bits? ?parity even|odd|none? ?handshake xonxoff|rtscts|none? ?input raw|cooked? ?output raw|cooked? ?echo 0|1? ?vmin n? ?vtime n?",
         aio_cmd_tty,
         0,
         -1,
diff --git a/jim-tty.c b/jim-tty.c
index 0ccab7b..5d9cee7 100644
--- a/jim-tty.c
+++ b/jim-tty.c
@@ -79,6 +79,7 @@ static const char * const tty_settings_names[] = {
     "stop",
     "vmin",
     "vtime",
+    "echo",
     NULL
 };
 
@@ -91,7 +92,8 @@ enum {
     OPT_PARITY,
     OPT_STOP,
     OPT_VMIN,
-    OPT_VTIME
+    OPT_VTIME,
+    OPT_ECHO
 };
 
 
@@ -319,6 +321,18 @@ badvalue:
                 }
                 break;
 
+            case OPT_ECHO:
+                if (Jim_GetLong(interp, valueObj, &l) != JIM_OK) {
+                    goto badvalue;
+                }
+                if (l) {
+                    tio.c_lflag |= ECHO;
+                }
+                else {
+                    tio.c_lflag &= ~ECHO;
+                }
+                break;
+
         }
     }
 
diff --git a/jim_tcl.txt b/jim_tcl.txt
index 01c33b4..26cfd93 100644
--- a/jim_tcl.txt
+++ b/jim_tcl.txt
@@ -60,6 +60,7 @@ Changes since 0.78
 4. Add `signal block` to prevent delivery of signals
 5. Add support for `file split`
 6. Add support for `json::encode` and `json::decode`
+7. `aio tty` now allows setting +echo+ without full +raw+ mode
 
 Changes between 0.77 and 0.78
 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
@@ -4855,6 +4856,10 @@ aio
     +*output raw|cooked*+;;
         Output character processing. Typically CR -> CRNL is disabled in raw mode.
 
+    +*echo 0|1*+;;
+        Disable or enable echo on input. Note that this is a set-only value.
+        Setting +input+ to +raw+ or +cooked+ will overwrite this setting.
+
     +*vmin* 'numchars'+;;
         Minimum number of characters to read.
 
-- 
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