\IfFileAtLeastTF missing

[Rimole]

Brief outline of the bug

There is \IfFormatAtLeastTF, \IfClassAtLeastTF, and \IfPackageAtLeastTF. There is also \ProvidesFile, but there is no \IfFileAtLeastTF. The ltxcmds package provides \ltx@iffilelater, but obviously it should be provided by the kernel. Example for a real live use case at: https://tex.stackexchange.com/q/309680

Minimal example showing the bug

\RequirePackage{latexbug}
\documentclass{article}
\ProvidesFile{text.tex}[2023-03-12 v1.0 bug]
%\usepackage{ltxcmds}
\begin{document}
\IfFileAtLeastTF{test.tex}{2023-01-01}{earlier}{at least}
%\makeatletter\ltx@iffilelater{test.tex}{2023-01-01}{earlier}{at least}\makeatother
\end{document}

Log file (required) and possibly PDF file

This is pdfTeX, Version 3.141592653-2.6-1.40.24 (TeX Live 2022) (preloaded format=pdflatex 2023.3.8) 12 MAR 2023 16:09
entering extended mode
restricted \write18 enabled.
%&-line parsing enabled.
**test.tex
(./test.tex
LaTeX2e <2022-11-01> patch level 1
L3 programming layer <2023-02-22> (m:/2022/texmf-dist/tex/latex/latexbug/latexbug.sty
Package: latexbug 2022/06/14 v1.0n Bug-classification
)
(m:/2022/texmf-dist/tex/latex/base/article.cls
Document Class: article 2022/07/02 v1.4n Standard LaTeX document class
(m:/2022/texmf-dist/tex/latex/base/size10.clo
File: size10.clo 2022/07/02 v1.4n Standard LaTeX file (size option)
)
\c@part=\count185
\c@section=\count186
\c@subsection=\count187
\c@subsubsection=\count188
\c@paragraph=\count189
\c@subparagraph=\count190
\c@figure=\count191
\c@table=\count192
\abovecaptionskip=\skip48
\belowcaptionskip=\skip49
\bibindent=\dimen140
)
File: text.tex 2023-03-12 v1.0 bug
(m:/2022/texmf-dist/tex/latex/l3backend/l3backend-pdftex.def
File: l3backend-pdftex.def 2023-01-16 L3 backend support: PDF output (pdfTeX)
\l__color_backend_stack_int=\count193
\l__pdf_internal_box=\box51
) (./test.aux)
\openout1 = `test.aux'.

LaTeX Font Info: Checking defaults for OML/cmm/m/it on input line 5.
LaTeX Font Info: ... okay on input line 5.
LaTeX Font Info: Checking defaults for OMS/cmsy/m/n on input line 5.
LaTeX Font Info: ... okay on input line 5.
LaTeX Font Info: Checking defaults for OT1/cmr/m/n on input line 5.
LaTeX Font Info: ... okay on input line 5.
LaTeX Font Info: Checking defaults for T1/cmr/m/n on input line 5.
LaTeX Font Info: ... okay on input line 5.
LaTeX Font Info: Checking defaults for TS1/cmr/m/n on input line 5.
LaTeX Font Info: ... okay on input line 5.
LaTeX Font Info: Checking defaults for OMX/cmex/m/n on input line 5.
LaTeX Font Info: ... okay on input line 5.
LaTeX Font Info: Checking defaults for U/cmr/m/n on input line 5.
LaTeX Font Info: ... okay on input line 5.

! Undefined control sequence.
l.6 \IfFileAtLeastTF
{test.tex}{2023-01-01}{earlier}{at least}
?
[1

{m:/2022/texmf-var/fonts/map/pdftex/updmap/pdftex.map}] (./test.aux) )
Here is how much of TeX's memory you used:
1763 strings out of 476024
41910 string characters out of 5798009
1849382 words of memory out of 5000000
22290 multiletter control sequences out of 15000+600000
512287 words of font info for 32 fonts, out of 8000000 for 9000
1141 hyphenation exceptions out of 32749
34i,5n,38p,167b,1309s stack positions out of 10000i,1000n,20000p,200000b,200000s
<m:/2022/texmf-dist/fonts/type1/public/amsfonts/cm/cmr1
0.pfb>
Output written on test.pdf (1 page, 13557 bytes).
PDF statistics:
13 PDF objects out of 1000 (max. 8388607)
7 compressed objects within 1 object stream
0 named destinations out of 1000 (max. 500000)
1 words of extra memory for PDF output out of 10000 (max. 10000000)