# HG changeset patch
# User Sean E. Russell <ser@ser1.net>
# Date 1634074287 18000
#      Tue Oct 12 16:31:27 2021 -0500
# Node ID c6e7a4d4cfd140db46d451a5bf748e1cd556a7c4
# Parent  dac711bc3df99336addd9a86902040d69b12b944
When merging tasks, remove duplicate project and context tags

diff --git a/main.go b/main.go
--- a/main.go
+++ b/main.go
@@ -127,21 +127,37 @@
 	t.Completed = b.Completed || a.Completed
 	sort.Strings(a.Projects)
 	sort.Strings(b.Projects)
-	t.Projects = make([]string, len(a.Projects))
-	for i, ap := range a.Projects {
-		t.Projects[i] = ap
+	t.Projects = make([]string, 0, len(a.Projects))
+	// Remove duplicate project tags
+	prjcts := make(map[string]bool)
+	for _, ap := range a.Projects {
+		if !prjcts[ap] {
+			t.Projects = append(t.Projects, ap)
+			prjcts[ap] = true
+		}
 	}
 	for _, bp := range b.Projects {
-		t.Projects = append(t.Projects, bp)
+		if !prjcts[bp] {
+			t.Projects = append(t.Projects, bp)
+			prjcts[bp] = true
+		}
 	}
 	sort.Strings(a.Contexts)
 	sort.Strings(b.Contexts)
-	t.Contexts = make([]string, len(a.Contexts))
-	for i, ap := range a.Contexts {
-		t.Contexts[i] = ap
+	t.Contexts = make([]string, 0, len(a.Contexts))
+	// Remove duplicate context tags
+	ctxts := make(map[string]bool)
+	for _, ap := range a.Contexts {
+		if !ctxts[ap] {
+			t.Contexts = append(t.Contexts, ap)
+			ctxts[ap] = true
+		}
 	}
 	for _, bp := range b.Contexts {
-		t.Contexts = append(t.Contexts, bp)
+		if !ctxts[bp] {
+			t.Contexts = append(t.Contexts, bp)
+			ctxts[bp] = true
+		}
 	}
 	t.AdditionalTags = make(map[string]string)
 	for k, v := range a.AdditionalTags {