From: Eric Hodel <drbrain@...7.net>
Date: 2011-01-14T03:56:09+09:00
Subject: Re: String.strip with UTF-8

On Jan 12, 2011, at 16:43, Erik E. wrote:

> Cool, thanks for that! I can just gsub/gsub! it out now that I know what 
> it is.

That will work if NO-BREAK SPACE is the only space you'll encounter.

s.gsub(/\A[[:space:]]*(.*?)[[:space:]]*\z/) { $1 }

will remove:
Space_Separator | Line_Separator | Paragraph_Separator | 0009 | 000A | 000B | 000C | 000D | 0085

See section 6 of http://www.geocities.jp/kosako3/oniguruma/doc/RE.txt

PS: Note that s.gsub(/…(…)…/, '\1') may alter the encoding of the result string.