Describe the bug

The error_badbrace string is significantly goofy looking

Command-line test case

#include <regex>

int main()
{
    try {
        std::regex r("a{4,3}");
        puts("it's legal");
    } catch (std::exception& e) {
        puts(e.what());
    }
}

https://godbolt.org/z/Y14Exavx7

Expected behavior

The expression contained an invalid range in a {} expression.

Actual behavior

The expression contained an invalid range in a { expression }.

Why was the closing brace moved one word to the right? That's neither consistent with the C++ spec, nor with my understanding of English grammar.

STL version

Don't know, ask Godbolt

Additional context

Probably a good first issue Good for newcomers