3 ms·
(\sSAI) is a group, not a character class. It matches the fixed string " SAI" and stores it in a group. If it were [\sSAI], you'd be correct.
by kbuck 12y ago
(\sSAI) is a group, not a character class. It matches the fixed string " SAI" and stores it in a group. If it were [\sSAI], you'd be correct.