warning: LF will be replaced by CRLF in files？這什麼東西啦！

有沒有遇過git add加入索引時，突然跳出這樣的訊息？

warning: LF will be replaced by CRLF in files.

我遇到的情境是這樣的，咳：
在Wordpress進入git init版本控制後，
出現一大堆奇怪的字樣，如果說是線上遊戲的公頻，它整個就是把我的iTerm2徹底大洗版啊啊啊！！！！一直廣播是怎樣

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warning: LF will be replaced by CRLF in files.
The file will have its original line endings in your working directory.
warning: LF will be replaced by CRLF in files.
The file will have its original line endings in your working directory.
warning: LF will be replaced by CRLF in files.
The file will have its original line endings in your working directory.
warning: LF will be replaced by CRLF in files.
The file will have its original line endings in your working directory.
warning: LF will be replaced by CRLF in files.
The file will have its original line endings in your working directory.

做了一些功課才知道

什麼是LF？

它是ASCII 10電腦編碼系統，換行符號：\n
簡單無腦的來說LF = \n

什麼是CRLF？

ASCII 13的電腦編碼系統，他和LF比較不一樣的是多了\r
沒錯，它就是用\r\n進行換行的，

既然\n就能換行，何必多浪費兩個字元\n\r來換行？

節省空間嘛！Git很聰明的想要節省空間，紀錄檔案時對於換行都是採\n的方式
所以釋出這訊息是為了要讓工程屍知道一下（？）善意的提醒。

原本檔案是CRLF，Git轉換成LF，那會有什麼影響嗎？

在unix系統上，若從git上拿到檔案，程式碼就永遠是LF格式了，再也回不去CRLF了。

關閉警告指令

若是覺得沒有關係，想關閉這個警告訊息輸入下列指令就好了。
git config core.autocrlf true

Reference | 參考資料