我有一个长.txt文件，这是一个示例：
A Beautiful Mind (Howard, 2001) Blu-ray, RIP, 1080p, x264, AC3 ITA-ENG, Subs, MKV, 12.26
A Bigger Splash (Guadagnino, 2015) Blu-ray, RIP, 1080p, x264, DTS ITA, Subs, MKV, 7.93
A casa con i miei (D. Lee, 2008) WEB, RIP, 1080p, x264, E-AC3/AAC ITA, E-AC3/AAC ENG, Subs, MKV
A casa con i suoi (Dey, 2006) Blu-ray, RIP, 1080p, x264, AC3 ITA-ENG, Subs, MKV, 8.57
A casa per le vacanze (Foster, 1995) Blu-ray, FOUND, 1080p, x264, AC3 ITA, MKV, 1.79
A casa per Natale (Brolin, 2016) WEB, RIP, 1080p, x264, E-AC3 ITA, Subs, MKV, 1.74
A casa per Natale (Fall, 2013) WEB, MUX, 1080p, x264, AC3 ITA, MKV, 2.68
A casa per Natale (Sanford, 1998) Blu-ray, MUX, 1080p, x264, AC3 ITA, MKV, 1.73
A casa tutti bene (Muccino, 2018) Blu-ray, RIP, 1080p, x264, DTS ITA, Subs, MKV, 5.71
A cavallo della tigre (Comencini, 1961) WEB, RIP, 1080p, x264, AAC/E-AC3 ITA, Subs, MKV, 10.44
A cena con un cretino (Roach, 2010) Blu-ray, RIP, 1080p, x264, AC3 ITA-ENG, Subs, MKV, 8.36
A Christmas Carol (Zemeckis, 2009) Blu-ray 3D, Half-SBS, RIP, 1080p, x264, AC3 ITA, AAC ENG, MKV
A Christmas Carol (Zemeckis, 2009) Blu-ray, RIP, 1080p, x264, DTS ITA, AC3 ENG, Subs, MKV, 4.51
A Christmas Melody (Carey, 2015) WEB, MUX, 1080p, x264, AC3 ITA, MKV, 1.70
A Christmas Reunion (Olson, 2015) WEB, MUX, 1080p, x264, AC3 ITA, MKV, 1.75
A Christmas wish (Clyde , 2011) WEB, RIP, 1080p, x264, AAC ITA, MKV, 1.85
A Ciambra (Carpignano, 2017) Blu-ray, FOUND, 1080p, x264, DTS ITA, Subs, MKV, 13.39
A ciascuno il suo (Petri, 1967) Blu-ray, RIP, 1080p, x264, DTS/AAC ITA, AC3 GER, Subs, MKV, 8.82
A Classic Horror Story (De Feo/Strippoli, 2021) WEB, FOUND, 1080p, x264, E-AC3/AAC ITA, Subs
A Dangerous Method (Cronenberg, 2011) Blu-ray, RIP, 1080p, x264, DTS ITA, AAC ENG, Subs, MKV
A Ghost Story (Lowery, 2017) Blu-ray, RIP, 1080p, x264, DTS ITA, AC3 ENG, Subs, MKV, 9.02
A Good Marriage (Askin, 2014) Blu-ray, RIP, 1080p, x264, DTS ITA, AC3 ENG, Subs, MKV, 7.00
A History of Violence (Cronenberg, 2005) Blu-ray, RIP, 1080p, x264, DTS ITA, AC3 ENG, Subs, MKV
À l'intérieur (Bustillo/Maury, 2007) Blu-ray, RIP, 1080p, x264, DTS ITA, AC3 FRE, Subs, MKV, 4.61
A letto con il nemico (Ruben, 1991) Blu-ray, RIP, 1080p, x264, DTS ITA, AC3 ENG, Subs, MKV, 7.44
A mano disarmata (Bonivento, 2019) Blu-ray, RIP, 1080p, x264, DTS ITA, Subs, MKV, 6.37
A mezzanotte va la ronda del piacere (Fondato, 1975) DVB, RIP, 1080p, x264, E-AC3/AAC ITA, Subs
A Modern Family (Fleming, 2018) Blu-ray, RIP, 1080p, x264, DTS ITA, AC3 ENG, Subs, MKV, 6.80
目的是标记具有相同标题的行，我的意思是如果多于 1 行具有相同的一系列单词（不区分大小写），直到字符)，则标记该行。因此，我删除所有未加书签的行，仅保留具有重复标题的行。
可以使用 Notepad++ 正则表达式搜索来完成吗？
任何其他简单的解决方案都值得赞赏。
答案1
- Ctrl+M
- 找什么：
(^.+?\)).+$(?:\R\1.+$)+ - 打钩
Bookmark lines - 打钩 相符
- 取消勾选
. matches newline - Mark all
- 搜索菜单 > 书签
- 删除未标记的行
解释：
( # group 1
^ # beginning of line
.+? # 1 or more any character but newline, not greedy
\) # closong parenthesis
) # end group 1
.+ # 1 or more any character but newline
$ # end of line
(?: # non capture group
\R # any kind of linebreak
\1 # backreference to group 1
.+ # 1 or more any character but newline
$ # end of line
)+ # end group, must appear 1 or more times
截屏：
