通过Emacs，如何将两行合二为一？
我是 Emacs 新手。 我用谷歌搜索过这个，但没有好的答案。 其中之一是 Ctrl-n Ctrl-a 退格键 这有效但很愚蠢。 有没有一种快速而简单的方法将一行行连接成一行？
实际上，我现在可以使用 Esc-q 自动填充段落，但是如何在不撤消的情况下恢复它呢？
I am new to Emacs. I have googled this but no good answer there. One of them is
Ctrl-n Ctrl-a Backspace
This works but is stupid. Is there a quick and simple way to join a block of lines into a single line?
Actually, I can use Esc-q to auto-fill a paragraph now, but how could I get it to revert without UNDO?
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将点放置在需要连接的行组的最后行上的任意位置，并
重复调用，直到合并所有行。
注意：它在所有现在连接的行之间留下一个空格。
Place point anywhere on the last line of the group of lines that need joining and call
repeatedly until all the lines are merged.
Note: It leaves one space between all of the now joined lines.
Mx join-line将连接两条线。 只需将其绑定到方便的击键即可。M-x join-linewill join two lines. Just bind it to a convenient keystroke.多个光标与 M-^ 结合会将所有选定的行折叠成一行，并带有所有无关的白色 -空间被移除。
例如，要选择整个缓冲区，调用多游标模式，折叠成一行，然后禁用多游标模式：
Multiple Cursors combined with M-^ will collapse all selected lines into one with all extraneous white-space removed.
For example to select an entire buffer, invoke multiple cursors mode, collapse into one line, and then disable multiple cursors mode:
Emacs 中“join”的常规名称是“fill”。 是的，您可以加入
两行带有
M-^——这很方便——但更一般地说，你会想要加入
n行。 为此，请参阅fill*命令，例如fill-region、fill-paragraph等。请参阅此了解更多信息
选择可以填充的东西。
此外，您可以通过先选择这些行来使用
M-^连接多行。 （请注意，通用论证不适用于此。）The Emacs conventional name for "join" is "fill". Yes, you can join
two lines with
M-^-- and that's handy -- but more generally you'llwant to join
nlines. For this, see thefill*commands, such asfill-region,fill-paragraph, etc.See this for more info
on selecting things which can then be filled.
Also, you can join multiple lines with
M-^by selecting those lines first. (Note that the universal argument does not work with this.)只需将换行符替换为空即可。
Just replace newlines with nothing.
我喜欢 Sublime text 使用 Command J 连接行的方式，所以我这样做：
I like the way Sublime text Join line with Command J so I do it this way:
您可以为此定义一个新命令，在使用 Esc-q 命令之前临时调整填充宽度：
显然，只有当您的段落少于 100000 个字符时，这才有效。
You could define a new command for this, temporarily adjusting the fill width before using the the Esc-q command:
Obviously this only works, if your paragraph has less than 100000 characters.
我使用以下函数并将其绑定到“MJ”。
如果您希望保持光标位置，可以使用 保存游览。
I use the following function and bind it to 'M-J'.
If you prefer to keep your cursor position, you can use save-excursion.
最简单的方法：
The most simplest way ever:
由于
join-line会在两行之间留一个空格，因此它只支持连接两行。 如果需要连接大量行且不留一个空格，可以使用“搜索-替换”模式来解决，如下：C-%Cq CjEnterEnter输入完成。
Because
join-linewill left one space between two lines, also it only support join two lines. In case of you want to join plenty of lines without one space left, you can use "search-replace" mode to solve, as follows:C-%C-q C-jEnterEnterEnterDone.
我想到了两种方法：
一旦您想到它，最明显（或至少最容易记住）的方法是使用
Mq format-paragraph和长行长度Cxf 1000.还有一个内置工具
M-^ join-line。 更有用的是，如果您选择一个区域，那么它会将它们全部组合成一行。Two ways come to mind:
Once you think of it, the most obvious (or at least easiest to remember) way is to use
M-q format-paragraphwith a long line lengthC-x-f 1000.There is also a built-in tool
M-^ join-line. More usefully, if you select a region then it will combine them all into one line.“我怎样才能让它在不撤消的情况下恢复？”：
"how could I get it to revert without UNDO?":
来自 EmacsWiki：取消填充段落
From EmacsWiki: Unfill Paragraph
两行的基本连接：
我喜欢将下面的行连接到当前行而不移动光标：
A basic join of 2 lines:
I like to line below to be joined to the current without moving the cursor:
这个行为就像 vscode 中一样。 因此，仅当连接线包含空格以外的内容时，它才会添加空格。 我将它绑定到
alt+shift+j。基于 crux-top-join-line 的较短版本：
基于 https://stackoverflow.com/a/33005183/588759 的较长版本。
This one behaves like in vscode. So it add space only if join line consisted something else than whitespace. And I bind it to
alt+shift+j.Shorter version based on crux-top-join-line:
Longer version based on https://stackoverflow.com/a/33005183/588759.