fix path_rel with empty base path
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@ -104,9 +104,10 @@ B path_rel(B base, B rel) { // consumes rel; assumes base is a char vector or bi
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if (ria>0 && o2cu(GetU(rel, 0))=='/') return rel;
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if (q_N(base)) thrM("Using relative path with no absolute base path known");
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if (ria==0) { dec(rel); return incG(base); }
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SGetU(base)
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usz bia = a(base)->ia;
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bool has = bia && o2cu(GetU(base, bia-1))=='/';
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if (bia==0) return rel;
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SGetU(base)
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bool has = o2cu(GetU(base, bia-1))=='/';
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u32* rp; B r = m_c32arrv(&rp, bia+ria+(has?0:1));
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usz ri = 0;
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for (usz i = 0; i < bia-(has?1:0); i++) rp[ri++] = o2cu(GetU(base, i));
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