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Test suite for xchar added

    1: \ xchar word test suite - UTF-8 only
    2: 
    3: key? drop \ initialize terminal - will init locale in Gforth
    4: hex
    5: 
    6: { 0 xc-size -> 1 }
    7: { 7f xc-size -> 1 }
    8: { 80 xc-size -> 2 }
    9: { 7ff xc-size -> 2 }
   10: { 800 xc-size -> 3 }
   11: { ffff xc-size -> 3 }
   12: { 10000 xc-size -> 4 }
   13: { 1fffff xc-size -> 4 }
   14: 
   15: : test-string s" 恭喜发财!" ;
   16: 
   17: { test-string drop xc@+ swap xc@+ swap xc@+ swap xc@+ swap xc@+ nip -> 606D 559C 53D1 8D22 21 }
   18: { ffff pad 4 xc!+? -> pad 3 + 1 true }
   19: { test-string drop xchar+ -> test-string drop 3 + }
   20: { test-string drop xchar+ xchar- -> test-string drop }
   21: { test-string +x/string -> test-string 3 /string }
   22: { test-string x\string- x\string- -> test-string 4 - }
   23: { test-string x-size -> 3 }
   24: { test-string -trailing-garbage -> test-string }
   25: { test-string 2 - -trailing-garbage -> test-string 4 - }
   26: 
   27: { 0. <# s" Test" holds #> s" Test" compare -> 0 }
   28: { 0. <# 606D xhold #> s" 恭" compare -> 0 }
   29: 
   30: { 606D xc-width -> 2 }
   31: { 41 xc-width -> 1 }
   32: { 2060 xc-width -> 0 }
   33: { test-string x-width -> 9 }