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a regex for single consonants

I need to detect missing consonants in a word where they are supposed to be doubled but one is missing. Example: inovation instead of innovation. I tried my best to come up with a variant and so far could not succeed. Things like (^nn^n) don t match at all. What I've done so far is this

Regex reg = new Regex ( "(c{1,})|(g{1,})|(l{1,})|(n{1,})|(p{1,})|(s{1,})" );

MatchCollection col = reg.Matches ( word );

It catches at least one character or perhaps more but then I sort them out in a foreach loop. The ones that are truly doubled are skipped (Length>= 2).

I am wondering if there is a more efficient way to do it Thanks.

AlexBB - Vista Ult64 SqlSer64 WinSer64

How about this one:

@"(?<c>[cglnps])(?!\k<c>)(?<!\k<c>\k<c>)"

Philippe Leybaert

I don't quite understand your question, but I'll try to make a guess:

(?<c>[cglnps])(?!\k<c>)

This will match any c,g,l,n,p or s which is not doubled.

Philippe Leybaert

Philippe Leybaert wrote:

I don't quite understand your question, but I'll try to make a guess:

(?<c>[cglnps])(?!\k<c>)