printf 在 zsh 中添加神秘的尾随 % 字符 [英] printf adds mysterious trailing % character in zsh

问题描述

我想在 zsh 中打印重复的 * 字符.这个答案有一个适用于bash的解决方案:

I want to print repeated * characters in zsh. This answer has a solution that works in bash:

printf '*%.0s' {1..50}

然而，当我在 zsh 中运行它时，我得到了这个输出:

However when I run that in zsh, I get this output:

**************************************************%

其中尾随 % 符号具有反转颜色.这对我来说很神秘，我想知道为什么会发生这种情况，我该如何避免?

where the trailing % sign has inverted colors. This is mysterious to me and I want to know why that happens, and how do I avoid it?

推荐答案

那不是性格，而是缺少性格.

That's not a character, it's the lack of a character.

如果输出的最后一行没有终止(即没有以换行符结束，\n)，zsh 会显示一个反向视频 % 符号.请参阅 http://zsh.sourceforge.net/Doc/Release/Options.html#提示.

If the last line of output is not terminated (i.e. does not end with a newline character, \n), zsh shows a reverse-video % sign. See http://zsh.sourceforge.net/Doc/Release/Options.html#Prompting.

解决方法是只输出一个终止的换行符:

The fix is to just output a terminating newline:

printf '*%.0s' {1..50}; echo

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