Find and set $WINDOWID to X11 window ID (#586)

1 files changed, 4 insertions, 1 deletions

diff --git a/src/tty.rs b/src/tty.rs
index bd291b16..4f0aa1cf 100644
--- a/src/tty.rs
+++ b/src/tty.rs
@@ -174,7 +174,7 @@ fn get_pw_entry(buf: &mut [i8; 1024]) -> Passwd {
 }
 
 /// Create a new tty and return a handle to interact with it.
-pub fn new<T: ToWinsize>(config: &Config, options: &Options, size: T) -> Pty {
+pub fn new<T: ToWinsize>(config: &Config, options: &Options, size: T, window_id: Option<usize>) -> Pty {
     let win = size.to_winsize();
     let mut buf = [0; 1024];
     let pw = get_pw_entry(&mut buf);
@@ -206,6 +206,9 @@ pub fn new<T: ToWinsize>(config: &Config, options: &Options, size: T) -> Pty {
     builder.env("SHELL", shell.program());
     builder.env("HOME", pw.dir);
     builder.env("TERM", "xterm-256color"); // default term until we can supply our own
+    if let Some(window_id) = window_id {
+        builder.env("WINDOWID", format!("{}", window_id));
+    }
     for (key, value) in config.env().iter() {
         builder.env(key, value);
     }