How to make code conditional on LaTeX kernel version

Asked Jan 01 '22 at 11:45

Active Jan 01 '22 at 11:45

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I want to make use of some kernel features introduced in the latest release (2021-11-15) in a package. In order to maintain some backwards compatibility, I want to issue a warning and use a workaround if the package is used with an older version of the kernel. How can I check if the kernel version is older than this release and execute code in accordance?

asked Jan 01 '22 at 11:45

schtandard

14,892

Searching around https://tex.stackexchange.com/questions/13304/which-package-version-am-i-using is related ... for this one there's \IfFormatAtLeastTF I guess? Didn't try – user202729 Jan 01 '22 at 11:54
tex core - Detecting which version of the LaTeX format is in use - TeX - LaTeX Stack Exchange – wait, the kernel and the format is not the same thing...? Or is it? I forgot – user202729 Jan 01 '22 at 11:55
@user202729 In my understanding they are the same. Thanks for the link, that's what I was looking for. – schtandard Jan 01 '22 at 12:13

How to make code conditional on LaTeX kernel version

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