From f5eaa591cb9653f616d817c4fa65a96ec7ca5253 Mon Sep 17 00:00:00 2001
From: Heiko Schaefer <heiko@schaefer.name>
Date: Mon, 22 Nov 2021 19:11:22 +0100
Subject: [PATCH] Add comment to clarify unwrap

---
 scdc/src/lib.rs | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/scdc/src/lib.rs b/scdc/src/lib.rs
index cc516ee..d4d531d 100644
--- a/scdc/src/lib.rs
+++ b/scdc/src/lib.rs
@@ -199,11 +199,15 @@ impl CardClient for ScdClient {
 
         let hex = hex::encode(cmd);
 
+        // (Unwrap is ok here, not having a card_caps is fine)
         let ext = if self.card_caps.is_some()
             && self.card_caps.unwrap().get_ext_support()
         {
+            // If we know about card_caps, and can do extended length we
+            // set "exlen" accordingly ...
             format!("--exlen={} ", self.card_caps.unwrap().get_max_rsp_bytes())
         } else {
+            // ... otherwise don't send "exlen" to scdaemon
             "".to_string()
         };