In conditionals, you can actually put logical expressions in the evaluation, like

(?<int>[0-9]+[0-9]*)?          # Match an integer
(?<decimal>\.?(?(!int)[0-9]+)) # Make the decimal required if there is no integer

The reference doesn't comment about being able to do them. i.e. (?(!group)yes|no)
There is also (?(group || group)yes|no) etc.

Hi, just tried:
Patterrn: @"^(\+|\d)" this should match '+' or '0' (from input1: @"+" or imput2="0"), but it doesn't. Only '0' is asserted as matching.
When remove ^ and pattern is (+|\d), then it matches both '+' and '0'

There's something wrong with the website. When I go to http://regexstorm.net/ I see the following message:

It'd be convenient to be able to add more text areas to the page for testing multiple inputs at the same time.

There seems to be an issue with https://regexstorm.net, only http version works for me right now.

I was testing different regex, with different options, with and without replace, and I didn't close or reload the tester page for hours.
And then I testet a regex, which should have matched 4 lines, but it matched only 3 lines.
I was 100% sure my regex is right, so I testet the regex in Notepad++ and I got 4 matches.
After resetting your RegexTester by reload in the browser, it machted 4 lines, too.
So I have to tell you, that your app is not always resetting properly after every change of an input.
It makes testing regex difficult, because before every minor change, you have to reload the page and fill again all empty inputs.
Sorry, but I don't have the steps to reproduce the error, because I used it for hours.
This is the regex, which had only 3 matches after then:
(?m:^([^\S\n]*)}[^\S\n]*)

This is the line, your app didn't match:
} else {

This is the tested input:

if ($InternalCall)
    {
        return $records
    }

    # -> now we have to render the collected data in a string to return

    $string = @()
    $first = $true

     $records | ForEach-Object { 
        if ($first) {


            # render first separator line
            # if you'd use the whole width of the console, in which powershell was startet, powershell.exe would remove
            # the next NewLine, so if you'd increase the width of the console with your mouse, the next line would merge
            # into the separator line, which looks not very nice, so I try not to create output with the consoles width
            $string += ("+" * $script:outputWidth - 1)


            $first = $false
        } else {
            $string += "*" * 5
        }
        $string += $_ | Select-Object * | Out-String
    }

A picture is easier than words, I have 2 captures for one Group but Replace displays only the last capture...

Can you please tell why?

Here in green

here the link
http://regexstorm.net/tester?p=%28.*%29%5cb%287585968541%29%28%5b-%2f%5d%3f%5cd%7b3%7d%29*%28%5b-%2f%5d%3f238%29%28%5b-%2f%5d%3f%5cd%7b3%7d%29*%5cb%28.*%29&i=98745968523%2f7585968574859%2f7585968541236-237-238-239%2f8889657852369%0d%0a&r=%241%242%243%244Updated%245%246

Thanks

Perhaps I was misunderstanding my attempted regexes but trying to use $, as an indicator of the end of text input, didn't seem to work.

I've moved on from the issue, but I seem to recall I was using something like:

\d+$

To catch digits at the end of text input.

Why you show literal '\r\n' instead of a new line in the context tab when using literal '\r\n' in the replacement ?

• Test strings:
  Game
FunAndGames
MiddleGame
GameTaste
LastGame
• Regular Expression:
  Game$
• Comments:
  I think it should match lines 1, 3, and 5, in multiline mode; it only matches 5 and that only if this line does not end with a newline.
  If the RegEx is ^Game, it will match 1 and 4 in multiline and 1 in non-multiline (as I expect).
  As far as I can tell, $ is behaving exactly like \Z, independent of the flags used.
  I tested the behavior in Chrome, Firefox and Internet Explorer.