ssh: reduce some redundant logging around AcceptEnv

just show it once at warn level and drop it to debug after that.

wezterm-ssh/src/pty.rs

@@ -228,13 +228,26 @@ impl crate::sessioninner::SessionInner {
                     // Depending on the server configuration, a given
                     // setenv request may not succeed, but that doesn't
                     // prevent the connection from being set up.
-                    log::warn!(
+                    if !self.shown_accept_env_error {
-                        "ssh: setenv {}={} failed: {}. \
+                        log::warn!(
-                         Check the AcceptEnv setting on the ssh server side.",
+                            "ssh: setenv {}={} failed: {}. \
-                        key,
+                            Check the AcceptEnv setting on the ssh server side. \
-                        val,
+                            Additional errors with setting env vars in this \
-                        err
+                            session will be logged at debug log level.",
-                    );
+                            key,
+                            val,
+                            err
+                        );
+                        self.shown_accept_env_error = true;
+                    } else {
+                        log::debug!(
+                            "ssh: setenv {}={} failed: {}. \
+                             Check the AcceptEnv setting on the ssh server side.",
+                            key,
+                            val,
+                            err
+                        );
+                    }
                 }
             }
         }

wezterm-ssh/src/session.rs

@@ -103,6 +103,7 @@ impl Session {
             next_file_id: 1,
             sender_read,
             session_was_dropped: false,
+            shown_accept_env_error: false,
         };
         std::thread::spawn(move || inner.run());
         Ok((Self { tx: session_sender }, rx_event))

wezterm-ssh/src/sessioninner.rs

@@ -47,6 +47,7 @@ pub(crate) struct SessionInner {
     pub next_file_id: FileId,
     pub sender_read: FileDescriptor,
     pub session_was_dropped: bool,
+    pub shown_accept_env_error: bool,
 }
 
 impl Drop for SessionInner {