proper symbolic handle on component resources:
diff -r ci-extras-1/etc/settings ci-extras-2/etc/settings
1c1,4
< classpath "$COMPONENT/lib/ci-extras.jar"
---
> #-*- shell-script -*- :mode=shellscript:
>
> ISABELLE_CI_EXTRAS_JAR="$COMPONENT/lib/ci-extras.jar"
> classpath "$ISABELLE_CI_EXTRAS_JAR"
diff -r ci-extras-1/README ci-extras-2/README
11a12
> Makarius, 02-Feb-2023

--- a/Admin/components/components.sha1	Fri Feb 03 14:10:09 2023 +0100
+++ b/Admin/components/components.sha1	Fri Feb 03 14:29:07 2023 +0100
@@ -23,6 +23,7 @@
 4085dd6060a32d7e0d2e3f874c463a9964fd409b bib2xhtml-20190409.tar.gz
 f92cff635dfba5d4d77f469307369226c868542c cakeml-2.0.tar.gz
 e7ffe4238b61a3c1ee87aca4421e7a612e09b836 ci-extras-1.tar.gz
+81ff56cd379744d1965425c7624feefffdf381eb ci-extras-2.tar.gz
 e880f31f59bd403fb72fcd3b5afb413c3831a21c csdp-6.1-1.tar.gz
 2659100ba8e28e7cb0ecb554178ee5315d4a87f5 csdp-6.1.1.tar.gz
 a2bd94f4f9281dc70dfda66cf28016c2ffef7ed7 csdp-6.1.tar.gz