Use of linkcolor option in hyperref












0















This question is posted as a requested follow-on from options for appearance of links in hyperref , to clear up some odd behaviour in hyperref.



In the snippet below, the two usepackage commands both work, but 'linkcolor=.' throws an error when combined with colorlinks=true (error text shown at end of post).



documentclass{article}



usepackage[colorlinks=true,linkcolor=]{hyperref}

%usepackage[linkcolor=.]{hyperref}



begin{document}



See Figure~ref{fig}



begin{figure}

        caption{This is an empty figure label{fig}}

end{figure}

end{document}


If I use the line



usepackage[colorlinks=true,linkcolor=.]{hyperref}


(note the dot), I get error text:



! LaTeX Error: Undefined color `.'



and the error comes immediately after the closing brace of ref{}



The effect I wanted to achieve was to remove boxes around links and leave all links text color except actual URLs, so when I used this command I also had urlcolor=blue in the options, but that was not needed to reproduce the error. But the following line did work, in that all links but URLs were invisible:



usepackage[colorlinks=true,urlcolor=blue,linkcolor=]{hyperref}


Using MiKTeX-pdfTeX 2.9.6959 (1.40.20) (MiKTeX 2.9.6960) on Windows 10






hyperref







share|improve this question


















  • 1





    Add usepackage{xcolor}.

    – Ulrike Fischer
    2 hours ago











  • Of course you get an error with linkcolor=. as this is setting the colour to ., which is a non-existent colour. SImialrly, with linkcolor= you are remving all colour so the lins are invisible. Doesn't usepackage[colorlinks=true,linkcolor=black]{hyperref} give what you want?

    – Andrew
    2 hours ago













  • Thank you for your advice to add xcolor. Perhaps hyperref should be loading it? I did not want to assume text was black. linkcolor=. is supposed to match the current text colour. See the discussion linked in the question for context. linkcolor=. works under some circumstances. The dot on its own is not necessarily an error.

    – Dr Darren
    2 hours ago
















0















This question is posted as a requested follow-on from options for appearance of links in hyperref , to clear up some odd behaviour in hyperref.



In the snippet below, the two usepackage commands both work, but 'linkcolor=.' throws an error when combined with colorlinks=true (error text shown at end of post).



documentclass{article}



usepackage[colorlinks=true,linkcolor=]{hyperref}

%usepackage[linkcolor=.]{hyperref}



begin{document}



See Figure~ref{fig}



begin{figure}

        caption{This is an empty figure label{fig}}

end{figure}

end{document}


If I use the line



usepackage[colorlinks=true,linkcolor=.]{hyperref}


(note the dot), I get error text:



! LaTeX Error: Undefined color `.'



and the error comes immediately after the closing brace of ref{}



The effect I wanted to achieve was to remove boxes around links and leave all links text color except actual URLs, so when I used this command I also had urlcolor=blue in the options, but that was not needed to reproduce the error. But the following line did work, in that all links but URLs were invisible:



usepackage[colorlinks=true,urlcolor=blue,linkcolor=]{hyperref}


Using MiKTeX-pdfTeX 2.9.6959 (1.40.20) (MiKTeX 2.9.6960) on Windows 10






hyperref







share|improve this question


















  • 1





    Add usepackage{xcolor}.

    – Ulrike Fischer
    2 hours ago











  • Of course you get an error with linkcolor=. as this is setting the colour to ., which is a non-existent colour. SImialrly, with linkcolor= you are remving all colour so the lins are invisible. Doesn't usepackage[colorlinks=true,linkcolor=black]{hyperref} give what you want?

    – Andrew
    2 hours ago













  • Thank you for your advice to add xcolor. Perhaps hyperref should be loading it? I did not want to assume text was black. linkcolor=. is supposed to match the current text colour. See the discussion linked in the question for context. linkcolor=. works under some circumstances. The dot on its own is not necessarily an error.

    – Dr Darren
    2 hours ago














0












0








0








This question is posted as a requested follow-on from options for appearance of links in hyperref , to clear up some odd behaviour in hyperref.



In the snippet below, the two usepackage commands both work, but 'linkcolor=.' throws an error when combined with colorlinks=true (error text shown at end of post).



documentclass{article}



usepackage[colorlinks=true,linkcolor=]{hyperref}

%usepackage[linkcolor=.]{hyperref}



begin{document}



See Figure~ref{fig}



begin{figure}

        caption{This is an empty figure label{fig}}

end{figure}

end{document}


If I use the line



usepackage[colorlinks=true,linkcolor=.]{hyperref}


(note the dot), I get error text:



! LaTeX Error: Undefined color `.'



and the error comes immediately after the closing brace of ref{}



The effect I wanted to achieve was to remove boxes around links and leave all links text color except actual URLs, so when I used this command I also had urlcolor=blue in the options, but that was not needed to reproduce the error. But the following line did work, in that all links but URLs were invisible:



usepackage[colorlinks=true,urlcolor=blue,linkcolor=]{hyperref}


Using MiKTeX-pdfTeX 2.9.6959 (1.40.20) (MiKTeX 2.9.6960) on Windows 10






hyperref







share|improve this question














This question is posted as a requested follow-on from options for appearance of links in hyperref , to clear up some odd behaviour in hyperref.



In the snippet below, the two usepackage commands both work, but 'linkcolor=.' throws an error when combined with colorlinks=true (error text shown at end of post).



documentclass{article}



usepackage[colorlinks=true,linkcolor=]{hyperref}

%usepackage[linkcolor=.]{hyperref}



begin{document}



See Figure~ref{fig}



begin{figure}

        caption{This is an empty figure label{fig}}

end{figure}

end{document}


If I use the line



usepackage[colorlinks=true,linkcolor=.]{hyperref}


(note the dot), I get error text:



! LaTeX Error: Undefined color `.'



and the error comes immediately after the closing brace of ref{}



The effect I wanted to achieve was to remove boxes around links and leave all links text color except actual URLs, so when I used this command I also had urlcolor=blue in the options, but that was not needed to reproduce the error. But the following line did work, in that all links but URLs were invisible:



usepackage[colorlinks=true,urlcolor=blue,linkcolor=]{hyperref}


Using MiKTeX-pdfTeX 2.9.6959 (1.40.20) (MiKTeX 2.9.6960) on Windows 10






hyperref




hyperref






share|improve this question













share|improve this question











share|improve this question




share|improve this question










asked 2 hours ago









Dr DarrenDr Darren

192




192








  • 1





    Add usepackage{xcolor}.

    – Ulrike Fischer
    2 hours ago











  • Of course you get an error with linkcolor=. as this is setting the colour to ., which is a non-existent colour. SImialrly, with linkcolor= you are remving all colour so the lins are invisible. Doesn't usepackage[colorlinks=true,linkcolor=black]{hyperref} give what you want?

    – Andrew
    2 hours ago













  • Thank you for your advice to add xcolor. Perhaps hyperref should be loading it? I did not want to assume text was black. linkcolor=. is supposed to match the current text colour. See the discussion linked in the question for context. linkcolor=. works under some circumstances. The dot on its own is not necessarily an error.

    – Dr Darren
    2 hours ago














  • 1





    Add usepackage{xcolor}.

    – Ulrike Fischer
    2 hours ago











  • Of course you get an error with linkcolor=. as this is setting the colour to ., which is a non-existent colour. SImialrly, with linkcolor= you are remving all colour so the lins are invisible. Doesn't usepackage[colorlinks=true,linkcolor=black]{hyperref} give what you want?

    – Andrew
    2 hours ago













  • Thank you for your advice to add xcolor. Perhaps hyperref should be loading it? I did not want to assume text was black. linkcolor=. is supposed to match the current text colour. See the discussion linked in the question for context. linkcolor=. works under some circumstances. The dot on its own is not necessarily an error.

    – Dr Darren
    2 hours ago








1




1





Add usepackage{xcolor}.

– Ulrike Fischer
2 hours ago





Add usepackage{xcolor}.

– Ulrike Fischer
2 hours ago













Of course you get an error with linkcolor=. as this is setting the colour to ., which is a non-existent colour. SImialrly, with linkcolor= you are remving all colour so the lins are invisible. Doesn't usepackage[colorlinks=true,linkcolor=black]{hyperref} give what you want?

– Andrew
2 hours ago







Of course you get an error with linkcolor=. as this is setting the colour to ., which is a non-existent colour. SImialrly, with linkcolor= you are remving all colour so the lins are invisible. Doesn't usepackage[colorlinks=true,linkcolor=black]{hyperref} give what you want?

– Andrew
2 hours ago















Thank you for your advice to add xcolor. Perhaps hyperref should be loading it? I did not want to assume text was black. linkcolor=. is supposed to match the current text colour. See the discussion linked in the question for context. linkcolor=. works under some circumstances. The dot on its own is not necessarily an error.

– Dr Darren
2 hours ago





Thank you for your advice to add xcolor. Perhaps hyperref should be loading it? I did not want to assume text was black. linkcolor=. is supposed to match the current text colour. See the discussion linked in the question for context. linkcolor=. works under some circumstances. The dot on its own is not necessarily an error.

– Dr Darren
2 hours ago










2 Answers
2






active

oldest

votes


















3














linkcolor=. causes hyperref to issue color{.}



which produces



LaTeX Error: Undefined color `.'


as there is no colour of that name using the standard color package as loaded by hyperref.



You are possibly thinking of the xcolor package syntax wher . means the current color



usepackage{xcolor}

usepackage[colorlinks=true,linkcolor=.]{hyperref}


works, although specifying coloured links this way seems slightly strange choice rather than just specifying the link border to have width 0.






share|improve this answer
























  • Strange to you. Seemed reasonable to me, with my lack of experience. I didn't want a border, so saying 'colour it instead' and then making the colour like the text seemed reasonable to me.

    – Dr Darren
    2 hours ago






  • 1





    @DrDarren there is some cost to adding a colour, the resulting pdf will have code to push a colour on to the stack and restore it, just using the current colour, conversely a pdf link always has a border attribute so setting its width to 0 (pdfborder= 0 0 0) is a far more direct and lightweight way of specifyng this

    – David Carlisle
    1 hour ago



















0














To sum up, as noted above, adding



usepackage{xcolor}



fixes the problem with using the dot in the hyperref options. There are other ways of getting the result I wanted that also do not throw errors; thanks to other posters.



Perhaps hyperref should load xcolor instead of color?






share|improve this answer























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    2 Answers
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    active

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    3














    linkcolor=. causes hyperref to issue color{.}



    which produces



    LaTeX Error: Undefined color `.'


    as there is no colour of that name using the standard color package as loaded by hyperref.



    You are possibly thinking of the xcolor package syntax wher . means the current color



    usepackage{xcolor}
    
usepackage[colorlinks=true,linkcolor=.]{hyperref}


    works, although specifying coloured links this way seems slightly strange choice rather than just specifying the link border to have width 0.






    share|improve this answer
























    • Strange to you. Seemed reasonable to me, with my lack of experience. I didn't want a border, so saying 'colour it instead' and then making the colour like the text seemed reasonable to me.

      – Dr Darren
      2 hours ago






    • 1





      @DrDarren there is some cost to adding a colour, the resulting pdf will have code to push a colour on to the stack and restore it, just using the current colour, conversely a pdf link always has a border attribute so setting its width to 0 (pdfborder= 0 0 0) is a far more direct and lightweight way of specifyng this

      – David Carlisle
      1 hour ago
















    3














    linkcolor=. causes hyperref to issue color{.}



    which produces



    LaTeX Error: Undefined color `.'


    as there is no colour of that name using the standard color package as loaded by hyperref.



    You are possibly thinking of the xcolor package syntax wher . means the current color



    usepackage{xcolor}
    
usepackage[colorlinks=true,linkcolor=.]{hyperref}


    works, although specifying coloured links this way seems slightly strange choice rather than just specifying the link border to have width 0.






    share|improve this answer
























    • Strange to you. Seemed reasonable to me, with my lack of experience. I didn't want a border, so saying 'colour it instead' and then making the colour like the text seemed reasonable to me.

      – Dr Darren
      2 hours ago






    • 1





      @DrDarren there is some cost to adding a colour, the resulting pdf will have code to push a colour on to the stack and restore it, just using the current colour, conversely a pdf link always has a border attribute so setting its width to 0 (pdfborder= 0 0 0) is a far more direct and lightweight way of specifyng this

      – David Carlisle
      1 hour ago














    3












    3








    3







    linkcolor=. causes hyperref to issue color{.}



    which produces



    LaTeX Error: Undefined color `.'


    as there is no colour of that name using the standard color package as loaded by hyperref.



    You are possibly thinking of the xcolor package syntax wher . means the current color



    usepackage{xcolor}
    
usepackage[colorlinks=true,linkcolor=.]{hyperref}


    works, although specifying coloured links this way seems slightly strange choice rather than just specifying the link border to have width 0.






    share|improve this answer













    linkcolor=. causes hyperref to issue color{.}



    which produces



    LaTeX Error: Undefined color `.'


    as there is no colour of that name using the standard color package as loaded by hyperref.



    You are possibly thinking of the xcolor package syntax wher . means the current color



    usepackage{xcolor}
    
usepackage[colorlinks=true,linkcolor=.]{hyperref}


    works, although specifying coloured links this way seems slightly strange choice rather than just specifying the link border to have width 0.







    share|improve this answer












    share|improve this answer



    share|improve this answer










    answered 2 hours ago









    David CarlisleDavid Carlisle

    493k4111371885




    493k4111371885













    • Strange to you. Seemed reasonable to me, with my lack of experience. I didn't want a border, so saying 'colour it instead' and then making the colour like the text seemed reasonable to me.

      – Dr Darren
      2 hours ago






    • 1





      @DrDarren there is some cost to adding a colour, the resulting pdf will have code to push a colour on to the stack and restore it, just using the current colour, conversely a pdf link always has a border attribute so setting its width to 0 (pdfborder= 0 0 0) is a far more direct and lightweight way of specifyng this

      – David Carlisle
      1 hour ago



















    • Strange to you. Seemed reasonable to me, with my lack of experience. I didn't want a border, so saying 'colour it instead' and then making the colour like the text seemed reasonable to me.

      – Dr Darren
      2 hours ago






    • 1





      @DrDarren there is some cost to adding a colour, the resulting pdf will have code to push a colour on to the stack and restore it, just using the current colour, conversely a pdf link always has a border attribute so setting its width to 0 (pdfborder= 0 0 0) is a far more direct and lightweight way of specifyng this

      – David Carlisle
      1 hour ago

















    Strange to you. Seemed reasonable to me, with my lack of experience. I didn't want a border, so saying 'colour it instead' and then making the colour like the text seemed reasonable to me.

    – Dr Darren
    2 hours ago





    Strange to you. Seemed reasonable to me, with my lack of experience. I didn't want a border, so saying 'colour it instead' and then making the colour like the text seemed reasonable to me.

    – Dr Darren
    2 hours ago




    1




    1





    @DrDarren there is some cost to adding a colour, the resulting pdf will have code to push a colour on to the stack and restore it, just using the current colour, conversely a pdf link always has a border attribute so setting its width to 0 (pdfborder= 0 0 0) is a far more direct and lightweight way of specifyng this

    – David Carlisle
    1 hour ago





    @DrDarren there is some cost to adding a colour, the resulting pdf will have code to push a colour on to the stack and restore it, just using the current colour, conversely a pdf link always has a border attribute so setting its width to 0 (pdfborder= 0 0 0) is a far more direct and lightweight way of specifyng this

    – David Carlisle
    1 hour ago











    0














    To sum up, as noted above, adding



    usepackage{xcolor}



    fixes the problem with using the dot in the hyperref options. There are other ways of getting the result I wanted that also do not throw errors; thanks to other posters.



    Perhaps hyperref should load xcolor instead of color?






    share|improve this answer




























      0














      To sum up, as noted above, adding



      usepackage{xcolor}



      fixes the problem with using the dot in the hyperref options. There are other ways of getting the result I wanted that also do not throw errors; thanks to other posters.



      Perhaps hyperref should load xcolor instead of color?






      share|improve this answer


























        0












        0








        0







        To sum up, as noted above, adding



        usepackage{xcolor}



        fixes the problem with using the dot in the hyperref options. There are other ways of getting the result I wanted that also do not throw errors; thanks to other posters.



        Perhaps hyperref should load xcolor instead of color?






        share|improve this answer













        To sum up, as noted above, adding



        usepackage{xcolor}



        fixes the problem with using the dot in the hyperref options. There are other ways of getting the result I wanted that also do not throw errors; thanks to other posters.



        Perhaps hyperref should load xcolor instead of color?







        share|improve this answer












        share|improve this answer



        share|improve this answer










        answered 1 hour ago









        Dr DarrenDr Darren

        192




        192






























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