forked from lix-project/lix
repl: complete if all matches share prefix
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@ -132,6 +132,24 @@ static char * completionCallback(char * s, int *match) {
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auto *res = strdup(possible.begin()->c_str() + strlen(s));
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if (!res) throw Error("allocation failure");
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return res;
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} else if (possible.size() > 1) {
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auto checkAllHaveSameAt = [&](size_t pos) {
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auto &first = *possible.begin();
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for (auto &p : possible) {
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if (p.size() <= pos || p[pos] != first[pos])
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return false;
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}
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return true;
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};
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size_t start = strlen(s);
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size_t len = 0;
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while (checkAllHaveSameAt(start + len)) ++len;
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if (len > 0) {
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*match = 1;
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auto *res = strdup(std::string(*possible.begin(), start, len).c_str());
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if (!res) throw Error("allocation failure");
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return res;
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}
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}
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*match = 0;
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