regex - 是否可以更改 vim regexp 方言？

Question

在 Vim 中，需要使用\(\) 来对一些字符序列进行分组。其他特价商品也有相同的行为:\{\}。

是否可以将正则表达式样式更改为像在 perl 中一样？如何切换？

反而

\\(

我会

(

？？？

Answer 1

您可以更改默认所需的“魔法级别”

:se nomagic
:se magic

见 :he magic
我建议使用相应的转义符来避免破坏其他映射。

 /\v(\d+)

将像您期望的 Perl Regex 一样匹配连续数字

来自 pattern.txt帮助:

Examples:
after:    \v       \m       \M       \V         matches ~
                'magic' 'nomagic'
          $        $        $        \$         matches end-of-line
          .        .        \.       \.         matches any character
          *        *        \*       \*         any number of the previous atom
          ()       \(\)     \(\)     \(\)       grouping into an atom
          |        \|       \|       \|         separating alternatives
          \a       \a       \a       \a         alphabetic character
          \\       \\       \\       \\         literal backslash
          \.       \.       .        .          literal dot
          \{       {        {        {          literal '{'
          a        a        a        a          literal 'a'

{only Vim supports \m, \M, \v and \V}

It is recommended to always keep the 'magic' option at the default setting,
which is 'magic'.  This avoids portability problems.  To make a pattern immune
to the 'magic' option being set or not, put "\m" or "\M" at the start of the
pattern.