Question

I am trying to match words driven from a database in a string input using VB .NET
The syntax I am using is so simple:

Regex.Matches(ArticleBody, "\b" & TagLabel & "\b", RegexOptions.IgnoreCase)

Where “TagLabel” is a variable from the database, and “ArticleBody” is the user input.
All is working fine, but I have a little issue:

Let’s suppose that:

TagLabel = "مصر"
ArticleBody = "لكن الجنرال المدني مصرٌ على الأمل، ولو كان حزيران يشي بالعكس."

Please note the “Tanwin” in “مصر” in the ArticleBody ” ٌ ” at the end of the fourth word.
The Regex function is matching the word “مصر”, while it should not.
I already searched for solutions, but didn’t find any.

Please advise.

Answer 1

You should try:

Regex.Matches(ArticleBody, "\b" & TagLabel & "\b", 
  RegexOptions.IgnoreCase | RegexOptions.RightToLeft)

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Update: Try this one:

Regex.Matches(ArticleBody, "(?<=(?:\s|^))" & TagLabel & "(?=(?:\s|$))", 
  RegexOptions.IgnoreCase | RegexOptions.RightToLeft)