avoid writing tex for #1412

base/doc/ltnews40.tex

@@ -415,6 +415,15 @@ \section{Extend support for \cs{dots}}
 
 \section{Changes to packages in the \pkg{tools} category}
 
+\subsection{Modification to generation of the \file{.tex} from \pkg{fileerr}}
+
+The \pkg{fileerr} extraction has been modified to write \texttt{rename-to-empty-base.tex}
+rather than \texttt{.tex} to comply with an expected security change in texlive 2025.
+\texttt{build.lua} has been  modified to rename \texttt{rename-to-empty-base.tex} to \texttt{.tex}
+after unpacking. However if using \textsf{docstrip} directly rather than using \textsf{l3build}
+or the unpacked zip file from \CTAN{}, the user must now rename the file and  install as \texttt{.tex}.
+%
+\githubissue{1412}
 
 \subsection{\pkg{array}: Tagging support for \cs{cline}}
 

required/tools/build.lua

@@ -38,3 +38,23 @@ checkconfigs = {"build","config-TU","config-legacy","config-search"}
 
 -- Load the common settings for the LaTeX2e repo
 dofile (maindir .. "/build-config.lua")
+
+-- special code to handle .tex
+oldbundleunpack=bundleunpack
+function bundleunpack(sourcedirs, sources)
+  errorlevel = oldbundleunpack(sourcedirs, sources)
+  if errorlevel ~= 0 then
+    return errorlevel
+  end
+  if module == "tools" then
+    print(" * Renaming rename-to-empty-base.tex to .tex")
+    errorlevel = ren(unpackdir,"rename-to-empty-base.tex",".tex")
+    if errorlevel ~= 0 then
+      return errorlevel
+    end
+  end
+  return 0
+end
+
+-- update function binding
+target_list.bundleunpack.func = bundleunpack

required/tools/changes.txt

@@ -1,3 +1,10 @@
+2024-09-12  David Carlisle  <David.Carlisle@latex-project.org>
+
+	* build.lua, tools.ins:
+	Modify fileerr extraction to write rename-to-empty-base.tex rather than .tex
+	to comply with expected security change in texlive 2025
+	build.lua modified to rename rename-to-empty-base.tex to .tex after unpacking.
+
 2024-08-13  Ulrike Fischer  <Ulrike.Fischer@latex-project.org>
 
 	* longtable.dtx:

required/tools/tools.ins

@@ -195,30 +195,22 @@ given in the file `manifest.txt'.
   \file{r.tex}{\from{fileerr.dtx}{run}}
   \file{x.tex}{\from{fileerr.dtx}{exit}}}
 
+\generate{\file{rename-to-empty-base.tex}{\from{fileerr.dtx}{return}}}
+
 
 \Msg{***********************************************************}
 \Msg{*}
 \Msg{* To finish the installation you have to move the following}
 \Msg{* files into a directory searched by TeX:}
 \Msg{*}
 \Msg{* All the files with extension `.sty' and `.tex'}
-\Msg{* Note there also may be a file .tex which is `invisible'}
-\Msg{* on some operating systems.}
+\Msg{* TeX may be blocked from writing .tex so writing rename-to-empty-base.tex}
+\Msg{* Rename that file to .tex after the docstrip generation.}
 \Msg{*}
 \Msg{* To produce the documentation run the .dtx files through LaTeX.}
 \Msg{*}
 \Msg{* Happy TeXing}
 \Msg{***********************************************************}
 
 
-\Msg{}
-\Msg{* Finally trying to make a file `.tex'.}
-\Msg{* (Placed at the end of this run, as this}
-\Msg{*  may fail on some operating systems.)}
-
-\let\oldopenout\openout
-\def\openout{\batchmode\immediate\oldopenout}
-
-\generate{\file{.tex}{\from{fileerr.dtx}{return}}}
-
 \endbatchfile