windows - 使用 `^` 转义 Windows 批处理文件中的行尾字符在某些行上不起作用？

Question

我有一个批处理文件，我将其放在一起，以便通过单击自动启动一个程序和多个关联程序。与问题相关的部分:

echo Starting FireFox with Elite Tabset...
cd "C:\Program Files\Mozilla Firefox\"
start firefox.exe ^
https://inara.cz/cmdr/276665/ https://coriolis.io/ ^
https://www.edsm.net/ ^
http://www.elitedangeroustrading.com/trade-assistant.aspx ^
https://www.edtutorials.com/ ^
"file:///C:/Program Files (x86)/VoiceAttack/Sounds/HCS Tools/Links and docs/Control packs/Singularity (Elite)/Singularity reference guide.pdf" "file:///C:/Program Files (x86)/VoiceAttack/Sounds/HCS Tools/Links and docs/Companion packs/Ships assistant Ad-Astra/Ad-Astra reference guide.pdf" "file:///C:/Program Files (x86)/VoiceAttack/Sounds/HCS Tools/.Voice command lists/Elite Dangerous Voice Commands/Singularity ship commands.html" "file:///C:/Users/Guillermo/Downloads/ebonym-t16000mfcs.jpg"
echo Starting EDDiscovery...

如您所见，我使用了 ^字符打破start firefox为了便于阅读，将命令分成多行。如图所示，该文件可以工作。但是，请注意倒数第二行，它以“file:/// ”开头。该行有多个参数。我试图做的是:

echo Starting FireFox with Elite Tabset...
cd "C:\Program Files\Mozilla Firefox\"
start firefox.exe ^
https://inara.cz/cmdr/276665/ https://coriolis.io/ ^
https://www.edsm.net/ ^
http://www.elitedangeroustrading.com/trade-assistant.aspx ^
https://www.edtutorials.com/ ^
"file:///C:/Program Files (x86)/VoiceAttack/Sounds/HCS Tools/Links and docs/Control packs/Singularity (Elite)/Singularity reference guide.pdf" ^
"file:///C:/Program Files (x86)/VoiceAttack/Sounds/HCS Tools/Links and docs/Companion packs/Ships assistant Ad-Astra/Ad-Astra reference guide.pdf" ^
"file:///C:/Program Files (x86)/VoiceAttack/Sounds/HCS Tools/.Voice command lists/Elite Dangerous Voice Commands/Singularity ship commands.html" ^
"file:///C:/Users/Guillermo/Downloads/ebonym-t16000mfcs.jpg"
echo Starting EDDiscovery...

当我这样做时，我得到以下输出:

C:\Program Files (x86)\VoiceAttack>echo Starting FireFox with Elite Tabset...
Starting FireFox with Elite Tabset...

C:\Program Files (x86)\VoiceAttack>cd "C:\Program Files\Mozilla Firefox\"

C:\Program Files\Mozilla Firefox>start firefox.exe https://inara.cz/cmdr/276665/ >https://coriolis.io/ https://www.edsm.net/ http://www.elitedangeroustrading.com/trade-assistant.aspx https://www.edtutorials.com/ "file:///C:/Program Files (x86)/VoiceAttack/Sounds/HCS Tools/Links and docs/Control packs/Singularity (Elite)/Singularity reference guide.pdf" ^


C:\Program Files\Mozilla Firefox>"file:///C:/Program Files (x86)/VoiceAttack/Sounds/HCS Tools/Links and docs/Companion packs/Ships assistant Ad-Astra/Ad-Astra reference guide.pdf" "file:///C:/Program Files (x86)/VoiceAttack/Sounds/HCS Tools/.Voice command lists/Elite Dangerous Voice Commands/Singularity ship commands.html" ^
The filename, directory name, or volume label syntax is incorrect.

C:\Program Files\Mozilla Firefox>"file:///C:/Users/Guillermo/Downloads/ebonym-t16000mfcs.jpg"
The filename, directory name, or volume label syntax is incorrect.

C:\Program Files\Mozilla Firefox>echo Starting EDDiscovery... 
Starting EDDiscovery...

我不明白为什么我能够分离出前 4 个参数，但不能分离出以 "file:// 开头的参数。 。 ^ 有一些微妙的方面吗？是我遗漏了还是误用了？这种清理有不同的技术吗？我承认这纯粹是一个可读性问题，但无法解释这种行为是令人烦恼的。

Answer 1

问题是以双引号开头的行，因为行尾处的插入符号会转义行尾和下一行的第一个字符。
这会导致转义第一个引号，而行末尾的“结束”引号会被解释为“开始”引号。

只需在每行前面加上空格即可解决此问题。

start firefox.exe ^
https://www.edsm.net/ ^
https://www.edtutorials.com/ ^
 "file:///C:/Program Files/guide.pdf" ^
 "file:///C:/Program Files/blapdf" ^
...

对于这个问题，还有第二种更晦涩的解决方案，即在插入符号前面添加重定向。
通过这种方法，下一行的第一个字符将按预期工作(不会被转义)

start firefox.exe ^
https://www.edsm.net/ <nul ^
https://www.edtutorials.com/ <nul ^
"file:///C:/Program Files/guide.pdf" <nul ^
"file:///C:/Program Files/blapdf" <nul ^
...

更多信息请访问SO:Long commands split over multiple lines..