regex and regsub are obsolete and Evil, so don't include them in the club.
diff --git a/Doc/lib/lib.tex b/Doc/lib/lib.tex
index 87101f8..6ebfadd 100644
--- a/Doc/lib/lib.tex
+++ b/Doc/lib/lib.tex
@@ -100,8 +100,8 @@
 \input{libstrings}		% String Services
 \input{libstring}
 \input{libre}
-\input{libregex}
-\input{libregsub}
+%\input{libregex}
+%\input{libregsub}
 \input{libstruct}
 \input{libfpformat}
 \input{libstringio}