RegEx error?

[Enzo4711]

Hello, maybe I discovered a RegEx error in V3.9.326.0
Using the built in Test Expression tool use "{$R *.dfm}" as sample text and then try the RegEx Expression "{$" (without quotes) it states that the expression is OK but you get an error message like "... too many )-chars". Using another Microsoft RegEx test software it works as expected and finds "{$".

[doug24]

When I try, I don't get any error, and the expression \{\$ works for me. What am I doing differently?

[Enzo4711]

Hm, don't understand why it suddenly works here in my Test window. I tried this way after not having success with the search engine for the same pattern.
Here is what I have now created here:

test.zip

test.pas (a simple Delphi/Pascal unit) is in my temporary directory aside with other files and directories. The dnGrep.png shows an OS's German error message I suppose. The "error" text translated to English is "...is getting analyzed - Too many )-characters".

Hope this helps.
Chris

[doug24]

Thanks for the test file. Yes, that is a bug. There is code in dnGrep checking for the $ token, but isn't checking for the escape.

Long story - in the .net regular expression engine the $ token matches only the newline \n, but most files on Windows use \r\n. There were bug reports that the $ token wasn't working so I added code to modify the user's regular expression for them to work with \r\n. That code is missing the check for the escaped dollar sign.

[doug24]

Fixed in Release 2.9.345