in src/blob/utils/utils.ts [226:243]
function ContainsInvalidTagCharacter(s: string): boolean {
for (let c of s) {
if (!(c >= 'a' && c <= 'z' ||
c >= 'A' && c <= 'Z' ||
c >= '0' && c <= '9' ||
c == ' ' ||
c == '+' ||
c == '-' ||
c == '.' ||
c == '/' ||
c == ':' ||
c == '=' ||
c == '_')) {
return true;
}
}
return false;
}