python-Emacs中的单元格模式

假设我有一个缓冲区,其中的代码(在本例中为Python)的组织方式如下：

.. cell 1 ..
## 
.. cell 2 ..

# this is a comment

### this is also a comment

.. still cell 2 ..

  ##
  .. cell 3 (code that is indented)

字符##的序列旨在界定缓冲区中的单元(代码区域/块).角色#在Python中开始注释,因此##被该语言视为注释.可以在例如Elisp与;;或其他编程语言.

我想定义一个Emacs命令,该命令在被调用时会将当前单元格(即当前位于其上的point /光标所在的单元格)定义为Emacs region(即突出显示该单元格).

我如何在Emacs中做到这一点？

以供参考：

>类似于MATLAB中的单元格或code sections的概念
>这是在Vim中实现此功能的thread.

解决方法:

这是一个解决方案：

(defun python-inside-comment-p ()
  (save-excursion
    (beginning-of-line 1)
    (looking-at "^#")))

(defun python-select-cell ()
  (interactive)
  (goto-char
   (if (re-search-backward "^\\s-*##[^#]" nil t)
       (match-end 0)
     (point-min)))
  (while (and (python-inside-comment-p)
              (eq 0 (forward-line 1)))
    nil)
  (set-mark (point))
  (goto-char
   (if (re-search-forward "^\\s-*\\(##[^#]\\)" nil t)
       (- (match-beginning 1) 2)
     (point-max))))

经过测试：

print "Beautiful is better than ugly."
##
print "Explicit is better than implicit."
print "Simple is better than complex."
print "Complex is better than complicated."
# this is a comment
print "Flat is better than nested."
### this is also a comment
print "Sparse is better than dense."
##
print "Readability counts."
print "Special cases aren't special enough to break the rules."
print "Although practicality beats purity."
print "Errors should never pass silently."
print "Unless explicitly silenced."

工作正常.
是否有理由不使用缩进级别而不是注释作为锚点？

标签：emacs,elisp,python
来源： https://codeday.me/bug/20191030/1966823.html