Vim（7.3.3 Windows 64位）：如果没有（^ f = unix），将^ M加到行尾(Vim (7.3.3 Windows 64bit): Add ^M to end of line if there is none (ff=unix))

 我有大约10万个以上的文件，其中有部分损坏的数据，混合文本+二进制文件（带有http头的单个jpg图像数据文件），其中一些头字段具有dos样式^ M ^ J行终止，并且一些只有unix样式^ J 。 当vim打开这样的文件时，它将它视为unix格式。 因此，所有没有^ M的标题行需要添加。 但这已被证明是非常艰难的。 
 
 :1,11s/Cache-Control:.*\zs^M\{0,}$/^M/ 
 
 不起作用，并且我尝试了各种各样的变体，甚至使用\ = printf（“％s”，“^ M”）作为替换字符串。 但结果始终是文件中的新空行。 
 
 唯一能够通过命令添加^ M的方法就是通过 
 
 :exe "normal A\<cq>\<cm>\<Esc>" 
 
 好的，一种方法是首先删除任何现有的^ M，然后按照前面的方法添加它。 但是，有没有更优雅的一个命令解决方案？ 
 
 （所以不会有更多的误解，下面是这样一个文件的简短例子： 
 
HTTP/1.1 200 OK
Server: Apache/2.2.3
(more lines...)
Cache-Control: public, max-age=214748
(more lines...)

ÿØÿá Exif  II*            ÿì
 
 ） 
 
 编辑/解决方案：关于100,000多个文件，这里有一个版本（关于仅在缓存控制线上丢失^ M），只有在^ M丢失时才匹配（因为并非所有文件都被损坏，这将节省大量时间，更新“）！ 
 
 :1,11s/^Cache-Control:.\{-}\zs\(^M*$\)\(^M\)\@<!/\^M/i 

I have some 100,000+ files with partially mangled data, mixed text+binary files (a single file of jpg image data with http headers), where some header fields have dos style ^M^J line termination, and some only unix style ^J. When vim opens a file like this, it treats it as unix format. So all header lines where there is no ^M, one needs to be added. But this has proven to be very tough. 
 
:1,11s/Cache-Control:.*\zs^M\{0,}$/^M/
 
doesn't work, and i've tried all kinds of variations of that, even using \=printf("%s","^M") as substitution string. But the result is always a new empty line in the file.
 
The ONLY way i'm able to add a ^M by a command at all is by
 
:exe "normal A\<c-q>\<c-m>\<Esc>"
 
Ok so one way would be to first remove any existing ^M, and then add it by previous. But is there a more elegant, one command solution?
 
(So that there would be no more misunderstandings, here's a short example of such a file:
 
HTTP/1.1 200 OK
Server: Apache/2.2.3
(more lines...)
Cache-Control: public, max-age=214748
(more lines...)

ÿØÿá Exif  II*            ÿì
 
)
 
Edit/solution: regarding 100,000+ files, here's a version (regarding missing ^M only on cache-control lines) that only matches if ^M is missing (as not all files are mangled, this will save large amounts of time together with "update!"):
 
:1,11s/^Cache-Control:.\{-}\zs\(^M*$\)\(^M\)\@<!/\^M/i

原文：https://stackoverflow.com/questions/11688853