Rivulet is a programming language of flowing strands, written in semigraphic characters. A strand is not pictographic: its flow does not simulate computation. There are four kinds of strands, each with their own symbolism and grammatical rules. Together, they form glyphs, tightly-packed blocks of code whose strands execute together.

Here is a complete Fibonacci program:

   ╵──╮───╮╭─    ╵╵╭────────╮
    ╰─╯╰──╯│       ╰─╶ ╶╮╶╮╶╯
   ╰─────╮ │      ╭─────╯ ╰─────╮
         ╰─╯ ╷    ╰───       ───╯╷

   ╵╵─╮  ╭─╮     ╭──       ╵╵╰─╮  ──╮──╮
      ╰─╮│ ╰─╯ ╵╵╰─╯╶╮       ╴─╯  ╭─╯╭─╯
      ╰─╯╰─ ╰──╯╰────╯       ╭╴ ╵╶╯ ╶╯╶╮
        ╭─╮ ╭╴               │  ╰──────╯
        │ │ │                ╰─╮       ╭─╮
      │ │ ╰─╯                  │     │   │
      ╰─╯            ╷         ╰──── ╰───╯╷

   ╵╵ ╭──  ──╮  ╭─╮         ╵╰─╮
      ╰─╮  ╭─╯╭─╯ │          ╴─╯
       ╶╯╵╶╯  │ ╷╶╯          ╭─╮
     ╭─╮ ╰────╯ │   ╭─╮        │
     │ ╰────╮ ╭─╯ ╭╴│ │      ╭─╯
     ╰────╮ │ │ │ │ │ │      │
     ╭────╯ │ │ ╰─╯ │ ╷      ╰─╷
     ╰────╮ │ ╰─────╯ │
          │ ╰─────────╯╷

#programming_languages