My goal is to combine several documents into one, so maybe someone can recommend a different solution. More specifically, I need to input about 20 files in a master file, all from line 4 to the second-to-last line, inclusive (I am excluding the \documentclass tag, an \input{header} tag, and \begin and \end{document} tags).

I would like to have a command, very similar to @mpg's answer here, except where the second number is relative to the number of lines in the file. For instance, something like


would be great. Or maybe


or similar (where \linenumber could be some command that gets the number of lines in the argument file). I would prefer not to use `subfiles', as that would require changing all the headers of the individual files. So, my questions are,

  1. Is there a command that gives back the number of lines in another file, or
  2. Can the \partialinput command be modified to include all but the last line in a document?

I'm not very proficient at TeX or e-TeX, so the structure of the \partialinput command is not clear to me. I initially thought that making the counter look one line ahead and stop when it reaches the end would do it, but again, I don't know enough TeX to make that happen.

  • I'd be tempted to generate versions of the files to partialinput using a suitable set of standard utilities such as head and tail called by write18. Or sed: tex.stackexchange.com/a/4908/28808 (this answer would be quite easy to modify)
    – Chris H
    Jun 16, 2017 at 21:31
  • why do it this way? It is far simpler just to place the bodies of the documents in separate files and then simply \input them. Jun 16, 2017 at 21:34
  • 2
    Package catchfilebetweentags might help
    – user31729
    Jun 16, 2017 at 21:53
  • @ChrisH the document may be typeset on different machines, and I'm not sure write18 will have the same result. @DavidCarlisle because I would like each of the smaller documents to be typeset separately - I suppose this is just an organizational and navigational preference. @ChristianHupfer this is what I ended up using, although I was put off by it because somewhere (can't find the question anymore) @egreg implied that catchfilebetweentags never works as expected. But it seems to work for me. Jun 17, 2017 at 21:01


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