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Using expanded macro as search pattern for patchcmd



Unicorn Meta Zoo #1: Why another podcast?
Announcing the arrival of Valued Associate #679: Cesar ManaraCurrent section title macro using titlesecIs there a workaround for this limitation of patchcmd?Why is patchcmd not working when also using @ifclassloaded?Using an expanded macro for optional environment argumentPattern for vruleSafe test for an empty expanded macro argument?Using MakeUppercase on expanded macro with argumentMacro: Expand differently depending on pattern?Macro - Repeat the pattern for any (even) number of argumentsFixing part layout using patchcmd












10















Is there any way to use the value of an expanded macro as the search pattern for etoolbox's patchcmd (or xpatch's xpatchcmd, etc), so that one can have some sort of a "dynamic" patch, by way of change catcodes?



Here's a MWE.



documentclass{article}

usepackage{etoolbox}
usepackage{xcolor}

begin{document}

newcommand{wordlist}{cat dog parrot goldfish hamster}

newcommandselectpet[1]{%
bgroup
patchcmd{wordlist}{#1}{textcolor{red}{#1}}{}{}
wordlist
egroup
}

selectpet{dog} %% This works

defmychoice{dog}
selectpet{mychoice} %% This doesn't

end{document}









share|improve this question




















  • 2





    Full expansion or once?

    – percusse
    Feb 5 '16 at 10:00






  • 1





    expandafterselectpetexpandafter{mychoice}

    – David Carlisle
    Feb 5 '16 at 10:08











  • Perhaps this is easier with expl3 sequences code instead of patching?

    – user31729
    Feb 5 '16 at 10:51











  • Thanks @percusse, you pointed me in the right direction, and @David hit it on the head! @Christian Unfortunately my expl3-fu is not up to scratch at all. :-/

    – LianTze Lim
    Feb 5 '16 at 13:24











  • @DavidCarlisle Ahem... an answer maybe ?

    – percusse
    Feb 5 '16 at 13:30
















10















Is there any way to use the value of an expanded macro as the search pattern for etoolbox's patchcmd (or xpatch's xpatchcmd, etc), so that one can have some sort of a "dynamic" patch, by way of change catcodes?



Here's a MWE.



documentclass{article}

usepackage{etoolbox}
usepackage{xcolor}

begin{document}

newcommand{wordlist}{cat dog parrot goldfish hamster}

newcommandselectpet[1]{%
bgroup
patchcmd{wordlist}{#1}{textcolor{red}{#1}}{}{}
wordlist
egroup
}

selectpet{dog} %% This works

defmychoice{dog}
selectpet{mychoice} %% This doesn't

end{document}









share|improve this question




















  • 2





    Full expansion or once?

    – percusse
    Feb 5 '16 at 10:00






  • 1





    expandafterselectpetexpandafter{mychoice}

    – David Carlisle
    Feb 5 '16 at 10:08











  • Perhaps this is easier with expl3 sequences code instead of patching?

    – user31729
    Feb 5 '16 at 10:51











  • Thanks @percusse, you pointed me in the right direction, and @David hit it on the head! @Christian Unfortunately my expl3-fu is not up to scratch at all. :-/

    – LianTze Lim
    Feb 5 '16 at 13:24











  • @DavidCarlisle Ahem... an answer maybe ?

    – percusse
    Feb 5 '16 at 13:30














10












10








10


0






Is there any way to use the value of an expanded macro as the search pattern for etoolbox's patchcmd (or xpatch's xpatchcmd, etc), so that one can have some sort of a "dynamic" patch, by way of change catcodes?



Here's a MWE.



documentclass{article}

usepackage{etoolbox}
usepackage{xcolor}

begin{document}

newcommand{wordlist}{cat dog parrot goldfish hamster}

newcommandselectpet[1]{%
bgroup
patchcmd{wordlist}{#1}{textcolor{red}{#1}}{}{}
wordlist
egroup
}

selectpet{dog} %% This works

defmychoice{dog}
selectpet{mychoice} %% This doesn't

end{document}









share|improve this question
















Is there any way to use the value of an expanded macro as the search pattern for etoolbox's patchcmd (or xpatch's xpatchcmd, etc), so that one can have some sort of a "dynamic" patch, by way of change catcodes?



Here's a MWE.



documentclass{article}

usepackage{etoolbox}
usepackage{xcolor}

begin{document}

newcommand{wordlist}{cat dog parrot goldfish hamster}

newcommandselectpet[1]{%
bgroup
patchcmd{wordlist}{#1}{textcolor{red}{#1}}{}{}
wordlist
egroup
}

selectpet{dog} %% This works

defmychoice{dog}
selectpet{mychoice} %% This doesn't

end{document}






macros expansion etoolbox patching






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edited 17 mins ago









David Carlisle

501k4211471897




501k4211471897










asked Feb 5 '16 at 9:40









LianTze LimLianTze Lim

8,77323068




8,77323068








  • 2





    Full expansion or once?

    – percusse
    Feb 5 '16 at 10:00






  • 1





    expandafterselectpetexpandafter{mychoice}

    – David Carlisle
    Feb 5 '16 at 10:08











  • Perhaps this is easier with expl3 sequences code instead of patching?

    – user31729
    Feb 5 '16 at 10:51











  • Thanks @percusse, you pointed me in the right direction, and @David hit it on the head! @Christian Unfortunately my expl3-fu is not up to scratch at all. :-/

    – LianTze Lim
    Feb 5 '16 at 13:24











  • @DavidCarlisle Ahem... an answer maybe ?

    – percusse
    Feb 5 '16 at 13:30














  • 2





    Full expansion or once?

    – percusse
    Feb 5 '16 at 10:00






  • 1





    expandafterselectpetexpandafter{mychoice}

    – David Carlisle
    Feb 5 '16 at 10:08











  • Perhaps this is easier with expl3 sequences code instead of patching?

    – user31729
    Feb 5 '16 at 10:51











  • Thanks @percusse, you pointed me in the right direction, and @David hit it on the head! @Christian Unfortunately my expl3-fu is not up to scratch at all. :-/

    – LianTze Lim
    Feb 5 '16 at 13:24











  • @DavidCarlisle Ahem... an answer maybe ?

    – percusse
    Feb 5 '16 at 13:30








2




2





Full expansion or once?

– percusse
Feb 5 '16 at 10:00





Full expansion or once?

– percusse
Feb 5 '16 at 10:00




1




1





expandafterselectpetexpandafter{mychoice}

– David Carlisle
Feb 5 '16 at 10:08





expandafterselectpetexpandafter{mychoice}

– David Carlisle
Feb 5 '16 at 10:08













Perhaps this is easier with expl3 sequences code instead of patching?

– user31729
Feb 5 '16 at 10:51





Perhaps this is easier with expl3 sequences code instead of patching?

– user31729
Feb 5 '16 at 10:51













Thanks @percusse, you pointed me in the right direction, and @David hit it on the head! @Christian Unfortunately my expl3-fu is not up to scratch at all. :-/

– LianTze Lim
Feb 5 '16 at 13:24





Thanks @percusse, you pointed me in the right direction, and @David hit it on the head! @Christian Unfortunately my expl3-fu is not up to scratch at all. :-/

– LianTze Lim
Feb 5 '16 at 13:24













@DavidCarlisle Ahem... an answer maybe ?

– percusse
Feb 5 '16 at 13:30





@DavidCarlisle Ahem... an answer maybe ?

– percusse
Feb 5 '16 at 13:30










1 Answer
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7














You want to expand mychoice before calling selectpet so:



expandafterselectpetexpandafter{mychoice}





share|improve this answer
























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    1 Answer
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    active

    oldest

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    active

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    active

    oldest

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    7














    You want to expand mychoice before calling selectpet so:



    expandafterselectpetexpandafter{mychoice}





    share|improve this answer




























      7














      You want to expand mychoice before calling selectpet so:



      expandafterselectpetexpandafter{mychoice}





      share|improve this answer


























        7












        7








        7







        You want to expand mychoice before calling selectpet so:



        expandafterselectpetexpandafter{mychoice}





        share|improve this answer













        You want to expand mychoice before calling selectpet so:



        expandafterselectpetexpandafter{mychoice}






        share|improve this answer












        share|improve this answer



        share|improve this answer










        answered Feb 5 '16 at 13:41









        David CarlisleDavid Carlisle

        501k4211471897




        501k4211471897






























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