All I found again and again was this:
[\s\t\r\n\f] \s Whitespace character
Two questions:
- I know that
\nis new line,\tis tab, but what is\rand\f? - How do I search for them? What keyword should I use in Google?
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Lucia
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2They are more whitespace characters. `\r` matches a carriage return while `\f` matches a form-feed character. – hwnd Nov 18 '14 at 02:24
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1Found this useful: http://stackoverflow.com/questions/3091524/what-are-carriage-return-linefeed-and-form-feed – Lucia Nov 18 '14 at 02:27
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http://en.wikipedia.org/wiki/ASCII – Yu Hao Nov 18 '14 at 02:27
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If you found that in a regex as a character class, it is completely redundant: `[\s\t\r\n\f]` is equivalent to `\s`. – Mark Thomas Nov 18 '14 at 03:20
1 Answers
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carriage return and form feed respectively. As for how to google, "whitespace characters" worked for me
moodoki
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