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//#define XERR
#include "builtin.ih"
// at stack[from] the # arguments to process is stored.
// the 1st arg is therefore at from + 1
void Builtin::insertReplace(ostream &out, string arg, size_t from) const
{
while (s_percent << arg) // find a %\d+ match
{
size_t idx = stoul(s_percent[1]);
auto pos = s_percent.position(0); // get the indices
out << arg.substr(0, pos.first); // insert info up to the %
out << d_stack[from + idx]; // insert the arg. value
arg.erase(0, pos.second); // remove the processed
// %\d
}
out << arg; // insert the tail
}
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