From 63e2046cd1496aa93766b30b4ed1bea2638b7791 Mon Sep 17 00:00:00 2001
From: Ian Jackson <ijackson@chiark.greenend.org.uk>
Date: Sat, 15 May 2021 23:53:01 +0100
Subject: [PATCH] otter: Dedup library items before adding them

Signed-off-by: Ian Jackson <ijackson@chiark.greenend.org.uk>
---
 src/bin/otter.rs | 11 ++++++++++-
 1 file changed, 10 insertions(+), 1 deletion(-)

diff --git a/src/bin/otter.rs b/src/bin/otter.rs
index db65a6b7..ea809ab0 100644
--- a/src/bin/otter.rs
+++ b/src/bin/otter.rs
@@ -1261,7 +1261,16 @@ mod library_add {
       }
     }
 
-    let items = chan.list_items(args.tlg.lib(), args.tlg.pat())?;
+    let mut items = chan.list_items(args.tlg.lib(), args.tlg.pat())?;
+
+    fn k(ied: &ItemEnquiryData) -> (&str, &GoodItemName) { (
+      &ied.lib.libname,
+      &ied.itemname,
+    ) }
+    items.sort_by(|a,b| Ord::cmp( &k(a), &k(b) ));
+    items.reverse();
+    items.dedup_by(|a,b| PartialEq::eq( &k(a), &k(b) ));
+    items.reverse();
 
     let mut exitcode = 0;
     let mut insns = vec![];
-- 
2.30.2