Fix getting stuck when closing pager without reading all entries

main.go

@@ -55,9 +55,13 @@ func showQueue() {
 	reader, writer := io.Pipe()
 	pagerDone := make(chan bool)
 	go launchPager(reader, pagerDone)
-	// TODO: Figure out how to handle the pager closing before we're done writing
 	for _, entry := range entries {
-		fmt.Fprintf(writer, "%s\n", entry.String())
+		_, writeError := fmt.Fprintf(writer, "%s\n", entry.String())
+		if writeError != nil {
+			// A writeError is expected once the reader was closed
+			// This happens when the pager application got terminated
+			break
+		}
 	}
 	writer.Close()
 	// Wait for pager to be closed before continuing the main program
@@ -74,6 +78,7 @@ func launchPager(reader *io.PipeReader, pagerDone chan<- bool) {
 	if err := cmd.Wait(); err != nil {
 		fmt.Printf("Error terminating pager: %s\n", err.Error())
 	} else {
+		reader.Close()
 		pagerDone <- true
 	}
 }