Fix warnings and update isalpharune()
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@@ -290,7 +290,7 @@ islowerrune(Rune r)
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{
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Rune *match;
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if(match = bsearch(&r, lower4, nelem(lower4), sizeof *lower4, &rune2cmp))
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if((match = bsearch(&r, lower4, nelem(lower4), sizeof *lower4, &rune2cmp)))
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return !((r - match[0]) % 2);
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if(bsearch(&r, lower2, nelem(lower2), sizeof *lower2, &rune2cmp))
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return 1;
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