win32: more changes to console/terminal modes

Allowing virtual terminal input mode to be set if available proved
to be unhelpful:  cmd.exe doesn't understand such newfangled stuff
(though PowerShell does).

The allowed values of BB_TERMINAL_MODE are changed to:

   0  Force console mode.
   1  Force virtual terminal mode for output.
   2  Force virtual terminal mode for input.
   3  Force virtual terminal mode for input and output.
   4  Support virtual terminal input if enabled.  Don't alter mode.
   5  Support virtual terminal input if enabled.  Set virtual terminal
      mode for output, if possible.

The default is 5.

1 files changed, 12 insertions, 13 deletions

diff --git a/Config.in b/Config.in
index 11990ed41..6b3d98b37 100644
--- a/Config.in
+++ b/Config.in
@@ -458,24 +458,23 @@ config FEATURE_EURO
 config TERMINAL_MODE
         int "Default setting for terminal mode"
         default 5
-        range 0 7
+        range 0 5
         depends on PLATFORM_MINGW32
         help
-        Control I/O mode of the Windows console/terminal.  Possible
-        values are:
+        Set the default input/output modes of the Windows console/terminal.
+        Possible values are:
 
-        0  Console mode.
-        1  Force terminal mode output.
-        2  Force terminal mode input.
-        3  Force terminal mode input and output.
+        0  Force console mode.
+        1  Force virtual terminal mode for output.
+        2  Force virtual terminal mode for input.
+        3  Force virtual terminal mode for input and output.
 
-        4  Console mode.
-        5  Prefer terminal mode output, fall back to console mode.
-        6  Prefer terminal mode input, fall back to console mode.
-        7  Prefer terminal mode input and output, fall back to console.
+        4  Support virtual terminal input if enabled.  Don't alter mode.
+        5  Support virtual terminal input if enabled.  Set virtual terminal
+           mode for output, if possible.
 
-        Setting the environment variable BB_TERMINAL_MODE overrides this
-        default.
+        Values 0-3 are for testing only.  The default is 5.  The environment
+        variable BB_TERMINAL_MODE overrides this.
 
 config FEATURE_IMPROVED_COLOUR_MAPPING
         bool "More accurate colour mapping for ANSI emulation (0.6 kb)"