Detect empty or null output from xstring's StrBetween












0















I have some code for formatting names. However, the ifempty macro from xifthen is unable to detect empty/null output from xstring macros such as StrBetween. The same goes for the equal {} method. How can I detect empty output from StrBetween? The below code for some reason compiles and does not work.



documentclass{article}



usepackage{xstring}

usepackage{xifthen}



newcommand{name}{John Doe}



newcommand{middleinitial}{%

    StrBetween{name}{ }{.}

}



newcommand{test}{%

    ifthenelse{isempty{middleinitial}}%

        {Whoo hoo!}%

        {Fvck!}

}



begin{document}



test



end{document}


Any ideas?






xstring xifthen






share



























    0















    I have some code for formatting names. However, the ifempty macro from xifthen is unable to detect empty/null output from xstring macros such as StrBetween. The same goes for the equal {} method. How can I detect empty output from StrBetween? The below code for some reason compiles and does not work.



    documentclass{article}
    

    
usepackage{xstring}
    
usepackage{xifthen}
    

    
newcommand{name}{John Doe}
    

    
newcommand{middleinitial}{%
    
    StrBetween{name}{ }{.}
    
}
    

    
newcommand{test}{%
    
    ifthenelse{isempty{middleinitial}}%
    
        {Whoo hoo!}%
    
        {Fvck!}
    
}
    

    
begin{document}
    

    
test
    

    
end{document}


    Any ideas?






    xstring xifthen






    share

























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      0








      I have some code for formatting names. However, the ifempty macro from xifthen is unable to detect empty/null output from xstring macros such as StrBetween. The same goes for the equal {} method. How can I detect empty output from StrBetween? The below code for some reason compiles and does not work.



      documentclass{article}
      

      
usepackage{xstring}
      
usepackage{xifthen}
      

      
newcommand{name}{John Doe}
      

      
newcommand{middleinitial}{%
      
    StrBetween{name}{ }{.}
      
}
      

      
newcommand{test}{%
      
    ifthenelse{isempty{middleinitial}}%
      
        {Whoo hoo!}%
      
        {Fvck!}
      
}
      

      
begin{document}
      

      
test
      

      
end{document}


      Any ideas?






      xstring xifthen






      share














      I have some code for formatting names. However, the ifempty macro from xifthen is unable to detect empty/null output from xstring macros such as StrBetween. The same goes for the equal {} method. How can I detect empty output from StrBetween? The below code for some reason compiles and does not work.



      documentclass{article}
      

      
usepackage{xstring}
      
usepackage{xifthen}
      

      
newcommand{name}{John Doe}
      

      
newcommand{middleinitial}{%
      
    StrBetween{name}{ }{.}
      
}
      

      
newcommand{test}{%
      
    ifthenelse{isempty{middleinitial}}%
      
        {Whoo hoo!}%
      
        {Fvck!}
      
}
      

      
begin{document}
      

      
test
      

      
end{document}


      Any ideas?






      xstring xifthen




      xstring xifthen





      share












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      asked 6 mins ago









      Adam EricksonAdam Erickson

      1438




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