title: How to execute with NppExec Plugin the leftmost tab opened? (ConTeXt in Npp)
body: <p>Question is in title: I have many opened files in Npp, and want to compile only the leftmost one by Alt+F6 (NppExec-Plugin), I am compiling tex-files with ConTeXt.</p>
  
  <p>At the moment my commands are:</p>
  
  <pre><code>cd $(CURRENT_DIRECTORY)
  taskkill /im SumatraPDF.exe
  context.exe "filename.tex" --synctex=1
  C:...\sumatra.bat "$(CURRENT_DIRECTORY)\filename.pdf"
  </code></pre>
  
  <p>How to change them, such that not a filename stand there, but only some enviromental variable, s.t. only the file in the leftmost tab is executed?</p>
  
  <p>Thanks!</p>