我的正则表达式最后总需要多得离谱的反斜杠。elisp 有正则表达式字面量吗，能不能让我写成这样
rx"text\(pattern\)"而不用这样写
"text\\(pattern\\)"My regular expressions end up needing a ridiculous quantity of backslashes. Are regexp literals available in elisp, letting me use something along these lines
rx"text\(pattern\)"rather than
"text\\(pattern\\)"也可以用 rx 宏，通过 S 表达式来构造正则表达式。
那个例子可以写成 (rx "text" (group "pattern"))
为了说明 rx 的用法，下面再给几个出自 rx.el 注释的例子。
表达式 ^;;\\s-*\n\\|^\n
会变成
(rx (or (and line-start ";;" (0+ space) ?\n)
(and line-start ?\n)))表达式 [ \t\n]*:\\([^:]+\\|$\\)
会变成
(rx (and (zero-or-more (in " \t\n")) ":"
(submatch (or line-end (one-or-more (not (any ?:)))))))You could build the expressions as sexps with the rx macro instead.
That example would read (rx "text" (group "pattern"))
To illustrate how rx behaves, these additional examples come from rx.el's commentary:
The expression ^;;\\s-*\n\\|^\n
turns into
(rx (or (and line-start ";;" (0+ space) ?\n)
(and line-start ?\n)))The expression [ \t\n]*:\\([^:]+\\|$\\)
turns into
(rx (and (zero-or-more (in " \t\n")) ":"
(submatch (or line-end (one-or-more (not (any ?:)))))))没有正则表达式字面量，不过很多人觉得 pcre2el (https://github.com/joddie/pcre2el) 是个有用的替代方案。
具体来说，可以在 elisp 中这样调用它。
(rxt-pcre-to-elisp
"(uvw|xyz)\\w+\\d+")
;; => "\\(\\(?:uvw\\|xyz\\)\\)[_[:alnum:]]+[[:digit:]]+"There aren't any regexp literals, though pcre2el (https://github.com/joddie/pcre2el) is an alternative that plenty of people find useful.
In particular, you can call it from elisp this way:
(rxt-pcre-to-elisp
"(uvw|xyz)\\w+\\d+")
;; => "\\(\\(?:uvw\\|xyz\\)\\)[_[:alnum:]]+[[:digit:]]+"能在 Google Colab (云端的 Jupyter) 中使用 MATLAB 命令吗？ 例如，我想在 Google Colab 中调用 Risk Management Toolbox 的函数，比如 bin(vbt, Name, Value)、tb…
我的尝试如下。 不过，看起来并不存在这条命令。 gdb 能实现这样的功能吗？
我想验证文本中包含 one 或 two。 在 Playwright 中能这样实现吗？ 同样的写法也能用在句子内部吗，比如下面这样
