Support for Non-Breaking Space Characters (NBSC) ?

[LucasMontorio]

Hi everyone,

I ran into an issue while testing the following regex:

/(?:From)\s*:\s*(?:.*?<)?([^<>\s]+@[^>\s]+)(?:>)?/i

Against the following string:

'From :  John DOE <[email protected]>'

where the space character between 'From' and the column (‘:’) is a Non-Breaking Space Character (U+00A0 in Unicode).

While in a Ruby runtime this regex does not match anything because it explicitly looks for a series of regular whitespaces (\s), in the online tool there is a match.
I suppose this is because the NBSC character, when copy-pasted, is somehow sanitized into a tab character, which is then recognised as a valid whitespace.

Is there a way to add support for NBSCs in the tool? If not, does anyone have more information about the limitations at stake here? :)

Thanks a lot in advance.

PS: This was first mentioned in a little post where you can find a little more context if needed