[texhax] latex --version = pdfTeX ... ?
dgreenhoe at gmail.com
Sun Nov 15 04:55:19 CET 2015
That is very helpful information---thank you very much for posting it.
I also thanked David two days or so ago; but looking back, it appears
I only sent the thank you email to David, and not to the texhax
mailing list as well. Many apologies :(
On Sun, Nov 15, 2015 at 12:20 AM, Karl Berry <karl at freefriends.org> wrote:
> Could something that begins with "pdfTeX" really be the version number
> of a latex.exe program? Is latex.exe just a special configuration of
> Yes. LaTeX is a so-called "format" (collection of macros), not a
> separate executable in itself. http://tug.org/levels.html discusses
> such things briefly. (tug.org is inaccessible briefly due to network
> infrastructure work, but hopefully will be back by the time you read this.)
> pdfTeX can output DVI, and does so by default when invoked as
> "latex", etc.
> Is there any way to read the latex and/or dvipdfmx version numbers
> at compile time and pass the string(s) to the metadata of the final
> pdf file?
> David mentioned \fmtversion for the real LaTeX version.
> You can get the "engine" (pdftex) version with, most descriptive,
> \pdftexbanner. Assuming you are using "latex".
> There's no (safe) way to get the dvipdfmx version number from within
> TeX. You'd need to extract it with something like
> dvipdfmx --version | sed 1q >fmxver.txt
> and then read that external file.
> Good luck. Hope this helps,
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