ash: add title built-in

Implement a 'title' built-in for ash.  It's very simple-minded,
performs almost no error checking and is completely non-portable.

- With no arguments it prints the current console title.

- If arguments are provided the *first only* is set as the console
  title.

Costs 88-116 bytes.

(GitHub issue #401)

1 files changed, 6 insertions, 2 deletions

diff --git a/win32/winansi.c b/win32/winansi.c
index 0dd2e17f2..3b7744b39 100644
--- a/win32/winansi.c
+++ b/win32/winansi.c
@@ -179,8 +179,12 @@ int terminal_mode(int reset)
 
 void set_title(const char *str)
 {
-        if (is_console(STDOUT_FILENO))
-                SetConsoleTitle(str);
+        SetConsoleTitle(str);
+}
+
+int get_title(char *buf, int len)
+{
+        return GetConsoleTitle(buf, len);
 }
 
 static HANDLE dup_handle(HANDLE h)