Simplify optional $reselect parameter in get_txc!()

card-functionality/src/list-cards.rs

@@ -3,14 +3,14 @@
 
 use anyhow::Result;
 
-use openpgp_card_pcsc::{PcscCard, TxClient};
+use openpgp_card_pcsc::{get_txc, PcscCard, TxClient};
 use openpgp_card_sequoia::card::Open;
 
 fn main() -> Result<()> {
     println!("The following OpenPGP cards are connected to your system:");
 
     for mut card in PcscCard::cards(None)? {
-        let mut txc: TxClient = openpgp_card_pcsc::get_txc!(card)?;
+        let mut txc: TxClient = get_txc!(card)?;
 
         let open = Open::new(&mut txc)?;
         println!(" {}", open.application_identifier()?.ident());

card-functionality/src/tests.rs

@@ -16,7 +16,7 @@ use openpgp_card;
 use openpgp_card::algorithm::AlgoSimple;
 use openpgp_card::card_do::{KeyGenerationTime, Sex};
 use openpgp_card::{CardClient, Error, KeyType, StatusBytes};
-use openpgp_card_pcsc::TxClient;
+use openpgp_card_pcsc::{get_txc, TxClient};
 use openpgp_card_sequoia::card::Open;
 use openpgp_card_sequoia::util::{
     make_cert, public_key_material_to_key, public_to_fingerprint,
@@ -682,8 +682,7 @@ pub fn run_test(
 
     use anyhow::anyhow;
 
-    let mut txc =
-        openpgp_card_pcsc::get_txc!(card_client).map_err(|e| anyhow!(e))?;
+    let mut txc = get_txc!(card_client).map_err(|e| anyhow!(e))?;
     // let mut txc = TxClient::new(&mut tx, card_caps, reader_caps);
 
     t(&mut txc, param)

openpgp-card-sequoia/src/main.rs

@@ -11,7 +11,7 @@ use sequoia_openpgp::Cert;
 
 use openpgp_card::card_do::Sex;
 use openpgp_card::KeyType;
-use openpgp_card_pcsc::{PcscCard, TxClient};
+use openpgp_card_pcsc::{get_txc, PcscCard, TxClient};
 
 use openpgp_card_sequoia::card::Open;
 use openpgp_card_sequoia::sq_util;
@@ -36,7 +36,7 @@ fn main() -> Result<(), Box<dyn Error>> {
 
     if let Ok(test_card_ident) = test_card_ident {
         let mut card = PcscCard::open_by_ident(&test_card_ident, None)?;
-        let mut txc = openpgp_card_pcsc::get_txc!(card)?;
+        let mut txc = get_txc!(card)?;
 
         let mut open = Open::new(&mut txc)?;
 
@@ -147,7 +147,7 @@ fn main() -> Result<(), Box<dyn Error>> {
         //  Open fresh Card for decrypt
         // -----------------------------
         let mut card = PcscCard::open_by_ident(&test_card_ident, None)?;
-        let mut txc = openpgp_card_pcsc::get_txc!(card)?;
+        let mut txc = get_txc!(card)?;
 
         let mut open = Open::new(&mut txc)?;
 
@@ -188,7 +188,7 @@ fn main() -> Result<(), Box<dyn Error>> {
         //  Open fresh Card for signing
         // -----------------------------
         let mut card = PcscCard::open_by_ident(&test_card_ident, None)?;
-        let mut txc = openpgp_card_pcsc::get_txc!(card)?;
+        let mut txc = get_txc!(card)?;
 
         let mut open = Open::new(&mut txc)?;
 
@@ -220,7 +220,7 @@ fn main() -> Result<(), Box<dyn Error>> {
         println!("The following OpenPGP cards are connected to your system:");
 
         for mut card in PcscCard::cards(None)? {
-            let mut txc = openpgp_card_pcsc::get_txc!(card)?;
+            let mut txc = get_txc!(card)?;
 
             let open = Open::new(&mut txc)?;
             println!(" {}", open.application_identifier()?.ident());

pcsc/src/lib.rs

@@ -20,16 +20,10 @@ const FEATURE_MODIFY_PIN_DIRECT: u8 = 0x07;
 /// in PcscCard)
 #[macro_export]
 macro_rules! get_txc {
-    ($card:expr $(, $reselect:expr)? ) => {{
+    ( $card:expr, $reselect:expr ) => {{
         use openpgp_card::{Error, SmartcardError};
         use pcsc::{Disposition, Protocols};
 
-        #[allow(unused_assignments)]
-        let mut reselect = true;
-        $(
-            reselect = $reselect;
-        )?
-
         let mut was_reset = false;
 
         let card_caps = $card.card_caps();
@@ -59,7 +53,7 @@ macro_rules! get_txc {
                         // For initial card-opening, we don't do this, then
                         // the caller always expects a card that has not
                         // been "select"ed yet.
-                        if reselect {
+                        if $reselect {
                             TxClient::select(&mut txc)?;
                         }
 
@@ -105,6 +99,9 @@ macro_rules! get_txc {
             };
         }
     }};
+    ( $card:expr ) => {
+        get_txc!($card, true)
+    };
 }
 
 fn default_mode(mode: Option<ShareMode>) -> ShareMode {