Stumped with simple regular expression

[Bryan Ax]

My regular expression inadequacies are surfacing again...

I'm trying to write a simple regex to match either the character S, or
the character O, or the phrase SP (but not the phrase SO, or SP, or any
other phrase).

I've tried simply:

[SO]|SP

but that still seems to match the phrase 'SO'

What I really need is something that says, the above, but don't allow
'SO'.

I feel so silly - I thought I was going to get this one done very
quickly...

Any help appreciated,

Bryan

[Bryan Ax]

Re: Stumped with simple regular expression

Oops - error in above. It should read but not the phrase SO, or OP, or
any
other phrase). SP is OK.

[Jon Shemitz]

Re: Stumped with simple regular expression

Bryan Ax wrote:
[color=blue]
> My regular expression inadequacies are surfacing again...
>
> I'm trying to write a simple regex to match either the character S, or
> the character O, or the phrase SP (but not the phrase SO, or SP, or any
> other phrase).[/color]

sp|s|o

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