Remove last char from result of a match regex

Question

I'm trying to extract a part of html in a jmeter test.

I need to extract just a part from a <script src="" tag.

• full script src: <script src="/Paginas/Inicializacao/AguardarAcao.aspx?_TSM_HiddenField_=ctl00_ToolkitScriptManager1_HiddenField&amp;_TSM_CombinedScripts_=%3b%3bAjaxControlToolkit%2c+Version%3d1.0.11119.38311%2c+Culture%3dneutral%2c+PublicKeyToken%3d28f01b0e84b6d53e%3apt-BR%3adf9c6e46-ef8c-4a3d-89af-f80adf22e9c2%3a865923e8%3a411fea1c%3ae7c87f07%3a91bd373d%3a1d58b08c%3a8e72a662%3aacd642d2%3a596d588c%3a77c58d20%3a14b56adc%3a269a19ae" type="text/javascript"></script>

• and I need just: %3b%3bAjaxControlToolkit%2c+Version%3d1.0.11119.38311%2c+Culture%3dneutral%2c+PublicKeyToken%3d28f01b0e84b6d53e%3apt-BR%3adf9c6e46-ef8c-4a3d-89af-f80adf22e9c2%3a865923e8%3a411fea1c%3ae7c87f07%3a91bd373d%3a1d58b08c%3a8e72a662%3aacd642d2%3a596d588c%3a77c58d20%3a14b56adc%3a269a19ae

Right now I created this regex:

%3b.*" 

that matches:

%3b%3bAjaxControlToolkit%2c+Version%3d1.0.11119.38311%2c+Culture%3dneutral%2c+PublicKeyToken%3d28f01b0e84b6d53e%3apt-BR%3adf9c6e46-ef8c-4a3d-89af-f80adf22e9c2%3a865923e8%3a411fea1c%3ae7c87f07%3a91bd373d%3a1d58b08c%3a8e72a662%3aacd642d2%3a596d588c%3a77c58d20%3a14b56adc%3a269a19ae" 

But I don't want the last two chars (one white space) and the ".
How to remove this last two chars?

Answer 1

Use regular expression pattern

%[^"]+

Answer 2

Maybe a positive look-ahead could help, something like:

%3b.*(?="\s)