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# VarsFromJobname
Sources for my varsfromjobname LaTeX package, available also from CTAN:
[https://www.ctan.org/tex-archive/macros/latex/contrib/varsfromjobname](https://www.ctan.org/tex-archive/macros/latex/contrib/varsfromjobname "CTAN varsfromjobname")
# Credits
varsfromjobname.sty is based on code by supplied by Friedrich Vosberg, Enrico Gregorio and Markus Kohm, help from Rolf Niepraschk, Sven Naumann, Ulrich Schwarz
and Andreas Mathias was greatly appreciated.
# What does this package do?
Using `varsfromjobname.sty` one can easily extract information from the filename, if it follows a certain form.
The standard LaTeX command `\jobname` returns the name of the LaTeX (master) file. If the filename consists of tokens separated by hyphen we can easily extract certain tokens that can be used _inside_ the document.
The package expects the filename to be of the form
`one-two-three-four-five-six-seven-eight-nine.tex` and offers the following commands:
* `\getfromjobname{param}`, with `param` in the range of 1 to 9 (a highlevel
interface to the following commands)
* `\getonefromjobname`
* `\gettwofromjobname`
* `\getthreefromjobname`
* `\getfourfromjobname`
* `\getfivefromjobname`
* `\getsixfromjobname`
* `\getsevenfromjobname`
* `\geteightfromjobname`
* `\getninefromjobname`
# Why can it be useful?
You can use this package for example to define the date of the document in the filename, personally I use it e.g. for `scrlttr2` letters.
# Shortcomings
* `\getfromjobname` is not fully expandable, use one of the other commands if you need expansion
* Version 1.0 cannot extract information from included sub-documents
* The package cannot handle more than nine tokens, see the reference to egreg's answer on TSX below for an updated version
# References
* [https://tex.stackexchange.com/questions/212169/qr-code-from-jobname/212171#212171](https://tex.stackexchange.com/questions/212169/qr-code-from-jobname/212171#212171 "QR-code from jobname")
Remark: [egreg](https://tex.stackexchange.com/users/4427/egreg "egreg") gave an improved version of the code written with expl3 which also overcomes the limitation of nine parameters.
* [https://tex.stackexchange.com/questions/116755/timestamp-in-document-pdf-name/116805#116805](https://tex.stackexchange.com/questions/116755/timestamp-in-document-pdf-name/116805#116805 "Timestamp in document / pdf name")
* German article in the DTK on pagewise versioning with Subversion (to be published)
# Change History
- Version 0.5, as of January 11th 2009: Initial version published
- Version 1.0, to be published May 2017:
- Added various commands which extract necessary information also from included documents
- Modified code as suggested by egreg
2017-04-30, Uwe Ziegenhagen
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