How to escape colon (:) in $PATH on UNIX?

This is impossible according to the POSIX standard. This is not a function of a specific shell, PATH handling is done within the execvp function in the C library. There is no provision for any kind of quoting. This is the reason why including certain characters (anything not in the “portable filename character set” – … Read more

Is it necessary to use — and – in XHTML or HTML5?

The W3C released an official response about when to use and when not to use character escapes which you can find here. As they are also the group that is in charge of the HTML specification, I think it’s best to follow their advice. From the section “When to Use Escapes” Syntax characters. There are … Read more

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