diff --git a/cran.r-project.org/web/checks/check_flavors.html b/cran.r-project.org/web/checks/check_flavors.html
index 011126b..6155a6f 100644
--- a/cran.r-project.org/web/checks/check_flavors.html
+++ b/cran.r-project.org/web/checks/check_flavors.html
@@ -10,7 +10,7 @@
 <div class="container">
 <h2>CRAN Package Check Flavors</h2>
 <p>
-Last updated on 2023-12-13 03:59:39 CET.
+Last updated on 2023-12-14 04:04:43 CET.
 </p>
 <p>
 Systems used for CRAN package checking.
diff --git a/cran.r-project.org/web/checks/check_issue_kinds.html b/cran.r-project.org/web/checks/check_issue_kinds.html
index e07d8bd..4e27cd6 100644
--- a/cran.r-project.org/web/checks/check_issue_kinds.html
+++ b/cran.r-project.org/web/checks/check_issue_kinds.html
@@ -10,7 +10,7 @@
 <div class="container">
 <h2>CRAN Package Check Issue Kinds</h2>
 <p>
-Last updated on 2023-12-13 03:59:39 CET.
+Last updated on 2023-12-14 04:04:43 CET.
 </p>
 <table border="1">
 <tr> <th> Kind </th> <th> Description </th> <th> Details </th> </tr>
diff --git a/svn.r-project.org/R-dev-web/trunk/CRAN/QA/Kurt/.R/check.Renviron b/svn.r-project.org/R-dev-web/trunk/CRAN/QA/Kurt/.R/check.Renviron
index e73045a..47b73b9 100644
--- a/svn.r-project.org/R-dev-web/trunk/CRAN/QA/Kurt/.R/check.Renviron
+++ b/svn.r-project.org/R-dev-web/trunk/CRAN/QA/Kurt/.R/check.Renviron
@@ -1,5 +1,5 @@
 ## KH's personal ~/.R/check.Renviron.
-## Last updated on 2023-11-23
+## Last updated on 2023-12-08
 
 ### Defaults for '--as-cran": commented out where not appropriate for
 ### all KH checks.
@@ -87,7 +87,7 @@ _R_CHECK_REPLACING_IMPORTS_=true
 _R_CHECK_SRC_MINUS_W_IMPLICIT_=true
 _R_CHECK_SUGGESTS_ONLY_=${_R_CHECK_SUGGESTS_ONLY_-true}
 _R_CHECK_SYSTEM_CLOCK_=false
-_R_CHECK_THINGS_IN_TEMP_DIR_EXCLUDE_="^(ompi|pulse|runtime-)"
+_R_CHECK_THINGS_IN_TEMP_DIR_EXCLUDE_="^(ompi|pmix-gds-shmem|pulse|runtime-)"
 _R_CHECK_VIGNETTES_SKIP_RUN_MAYBE_=true
 _R_CHECK_XREFS_USE_ALIASES_FROM_CRAN_=true
 ## Outputs
@@ -103,4 +103,10 @@ _R_CHECK_VIGNETTE_TIMING_CPU_TO_ELAPSED_THRESHOLD_=${_R_CHECK_VIGNETTE_TIMING_CP
 _R_CHECK_INSTALL_TIMING_CPU_TO_ELAPSED_THRESHOLD_=${_R_CHECK_INSTALL_TIMING_CPU_TO_ELAPSED_THRESHOLD_-2.5}
 ## Others
 _R_GC_FAIL_ON_ERROR_=true
+
 ## R_USEMETHOD_FORWARD_LOCALS=error
+
+## <FIXME>
+## Remove eventually: for experimenting with NCOL(NULL).
+_R_NCOL_NULL_IS_ZERO_=true
+## </FIXME>
diff --git a/svn.r-project.org/R-dev-web/trunk/CRAN/QA/Kurt/bin/check-R-ng b/svn.r-project.org/R-dev-web/trunk/CRAN/QA/Kurt/bin/check-R-ng
index 39c7c03..99f2cdc 100644
--- a/svn.r-project.org/R-dev-web/trunk/CRAN/QA/Kurt/bin/check-R-ng
+++ b/svn.r-project.org/R-dev-web/trunk/CRAN/QA/Kurt/bin/check-R-ng
@@ -146,8 +146,8 @@ configure_args="${configure_args} ${blas}"
 
 case "${R_flavor}" in
   r-devel)
-    R_source_url=https://cran.r-project.org/src/base-prerelease/R-devel.tar.gz
-    ## R_source_url=https://stat.ethz.ch/R/daily/R-devel.tar.gz
+    ## R_source_url=https://cran.r-project.org/src/base-prerelease/R-devel.tar.xz
+    R_source_url=https://stat.ethz.ch/R/daily/R-devel.tar.xz
     ;;
   r-patched)
     R_source_url=https://cran.r-project.org/src/base-prerelease/R-latest.tar.gz
@@ -331,6 +331,8 @@ mv src src.save
   touch stamp &&
   (if test "${R_flavor}" = "local"; then
      tar zxmf "${R_source_path}"
+   elif test "${R_source_url##*.}" = "xz"; then
+     wget -O - --retr-symlinks ${R_source_url} | tar Jxmf -
    else
      wget -O - --retr-symlinks ${R_source_url} | tar zxmf -
    fi) &&
diff --git a/svn.r-project.org/R-dev-web/trunk/CRAN/QA/Kurt/lib/R/Scripts/check_CRAN_incoming.R b/svn.r-project.org/R-dev-web/trunk/CRAN/QA/Kurt/lib/R/Scripts/check_CRAN_incoming.R
index a638c8e..a0daa27 100644
--- a/svn.r-project.org/R-dev-web/trunk/CRAN/QA/Kurt/lib/R/Scripts/check_CRAN_incoming.R
+++ b/svn.r-project.org/R-dev-web/trunk/CRAN/QA/Kurt/lib/R/Scripts/check_CRAN_incoming.R
@@ -242,6 +242,10 @@ check_env <-
            "_R_CHECK_CRAN_INCOMING_=false",
            ## </FIXME>
            "_R_CHECK_CONNECTIONS_LEFT_OPEN_=false",
+           ## <FIXME>
+           ## Remove eventually ...
+           ##   "_R_CHECK_SRC_MINUS_W_FORMAT_EXCEPTIONS_",
+           ## </FIXME>
            "_R_CHECK_THINGS_IN_TEMP_DIR_=false",
            ## "_R_CHECK_XREFS_MIND_SUSPECT_ANCHORS_=false",
            ## <FIXME>
diff --git a/svn.r-project.org/R-dev-web/trunk/CRAN/QA/Kurt/lib/R/Scripts/check_CRAN_regular.R b/svn.r-project.org/R-dev-web/trunk/CRAN/QA/Kurt/lib/R/Scripts/check_CRAN_regular.R
index b57a69e..7fdeaa9 100644
--- a/svn.r-project.org/R-dev-web/trunk/CRAN/QA/Kurt/lib/R/Scripts/check_CRAN_regular.R
+++ b/svn.r-project.org/R-dev-web/trunk/CRAN/QA/Kurt/lib/R/Scripts/check_CRAN_regular.R
@@ -47,7 +47,7 @@ if(endsWith(Sys.getenv("R_MAKEVARS_USER"), "-clang"))
 
 ## <FIXME>
 ## Remove eventually: for experimenting with NCOL(NULL) only.
-##   Sys.setenv("_R_NCOL_NULL_IS_ZERO_" = "true")
+Sys.setenv("_R_NCOL_NULL_IS_ZERO_" = "true")
 ## </FIXME>
 
 ## <FIXME>