fix: remove hack for clang

src/fmindex-collection/utils.h

@@ -46,7 +46,7 @@ auto createSequences(Sequences auto const& _input, int samplingRate, bool revers
     // compute total numbers of bytes of the text including delimiters "$"
     size_t totalSize{};
     for (auto const& l : _input) {
-        auto textLen    = l.size();
+        auto textLen  = l.size();
         auto delimLen = samplingRate - textLen % samplingRate; // Make sure it is always a multiple of samplingRate
         totalSize += textLen + delimLen;
     }
@@ -62,25 +62,20 @@ auto createSequences(Sequences auto const& _input, int samplingRate, bool revers
 
     for (auto const& l : _input) {
         auto ls = l.size();
+
+        inputText.insert(inputText.end(), begin(l), end(l));
+        if (reverse) {
+            std::reverse(inputText.end()-ls, inputText.end());
+        }
+
         // number of delimiters ('$') which need to be added. It must be at least one, and it
         // has to make sure the text will be a multiple of samplingRate
         size_t delimCount = samplingRate - (ls % samplingRate);
-        inputText.resize(inputText.size() + ls + delimCount, 0);
-
-        if (not reverse) {
-            std::ranges::copy(l, end(inputText) - ls - delimCount);
-        } else {
-//!TODO hack for clang, broken in clang 15
-#if __clang__
-            auto l2 = std::vector<uint8_t>(l);
-            std::ranges::reverse(l2);
-#else
-            auto l2 = std::views::reverse(l);
-#endif
-            std::ranges::copy(l2, end(inputText) - ls - delimCount);
-        }
 
-        inputSizes.emplace_back(l.size(), delimCount);
+        // fill with delimiters/zeros
+        inputText.resize(inputText.size() + delimCount);
+
+        inputSizes.emplace_back(ls, delimCount);
     }
     return {totalSize, inputText, inputSizes};
 }