compound seq fn: smerge

smerge:
    description:
        smerge seq
        smerge["str"] seq
        merges a sequence into a single string, optionally separated by the str string

    examples:
        smerge (|F> . |r> . |e> . |d>)
            |Fred>

        smerge[", "] (|a> . |b> . |c> . |d>)
            |a, b, c, d>

        -- define the bracket operator:
        bracket (*) #=> |[> _ smerge[", "] |__self> _ |]>

        -- define the print-bracket operator:
        print-bracket (*) #=> print bracket |__self>

        -- quick test of the bracket operator:
        bracket (|F> . |r> . |e> . |d>)
            |[F, r, e, d]>

        -- quick test of the print-bracket operator:
        print-bracket (|F> . |r> . |e> . |d>)
            [F, r, e, d]
            |[F, r, e, d]>

    see also:
        ssplit, smap