github.com/lmorg/murex@v0.0.0-20240217211045-e081c89cd4ef/builtins/optional (about) dummy.go encoders optional-barcode.go optional-encoders.go optional-printf.go optional-select.go optional-time.go pipe-mail.go pipe-net.go printf qr select standard-opts.txt time type-hcl.go type-sexp.go wasm-opts.txt