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Doing it with just one emoji sort of misses the point...

One way in P6, combining the full family into one character:

    my \test = "test\c[Woman,ZWJ,Woman,ZWJ,Girl,ZWJ,Boy]";
    say test.chars; # 5
    say test;       # test   
    say flip test;  #    tset
    say test.chop;  # test
HN displays the 7 codepoint family as three spaces.

To see that P6 treats the family as one:

https://tio.run/##K0gtyjH7/18BCHIrFWJKUotLFGwV1EG0ukKdQmleZk...




Sorry. Tested with the family, but didn’t notice that I only took the single code point when making _something_ show upon HN. It also works for

  “test\u{1F469}\u{200d}\u{1f469}\u{200d}\u{1f467}\u{200d}\u{1f466}"




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