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Here is page \pageref{here}\label{here}

\pageref{here}\label{here} can get the page number of the current location, I want to write it into a txt file, but writing directly will report an error, I want to know how to convert this variable so that it can be written into a txt file.

\documentclass{article} \usepackage{zref-abspage,lipsum} \usepackage{fancyhdr} \newwrite\myoutfile \immediate\openout\myoutfile=\jobname-myoutfile.txt \begin{document} \lipsum[1-10] \immediate\write\myoutfile{\pageref{here}\label{here}.} \lipsum[10-12] \end{document}
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  • it is already written to the aux file, you could simply extract it from there with grep here foo.aux or similar Commented Dec 9, 2021 at 9:10
  • but if you mean write that literal text (rather than the page number) then \immediate\write\myoutfile{\detokenize{\pageref{here}\label{here}.}} Commented Dec 9, 2021 at 9:12
  • But what I want to write is the page number obtained by this command Commented Dec 9, 2021 at 10:26
  • You can use zref or refcount to get expandable page references. Commented Dec 9, 2021 at 11:08
  • you don't need a label for that just use \write\myoutfile{\thepage}, but as I said in the first comment, why do you need a special file for this, if you do use \label then the information is written to the aux file. Commented Dec 9, 2021 at 11:42

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I added !!! just for debugging so you can see where the page write happened, on page 2 in this case:

enter image description here

The file written is

This was on page 2.

You just need to do a non-immediate \write to make sure that you get the correct number

\documentclass{article} \usepackage{zref-abspage,lipsum} \usepackage{fancyhdr} \newwrite\myoutfile \immediate\openout\myoutfile=\jobname-myoutfile.txt \begin{document} \lipsum[1-10] !!!\write\myoutfile{This was on page \thepage.} \lipsum[10-12] \end{document}
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