this isn’t just an academic curiosity. flip the alternation order to (ab|a)+ and suddenly PCRE matches the entire string! the | operator in backtracking engines is ordered - it’s not union, it’s “try left first”. the order of branches changes the result, which means | is not commutative. a|b and b|a can give different matches.
▲ Macintosh 电脑经典广告《1984》。雷电模拟器官方版本下载对此有专业解读
。旺商聊官方下载是该领域的重要参考
● 군사 충돌 확산…에너지 시설도 영향권，详情可参考体育直播
На шее Трампа заметили странное пятно во время выступления в Белом доме23:05
:first-child]:h-full [&:first-child]:w-full [&:first-child]:mb-0 [&:first-child]:rounded-[inherit] h-full w-full