I am uploading a NMU to fix this.
diff -Nru pike8.0-8.0.1738/debian/changelog pike8.0-8.0.1738/debian/changelog
--- pike8.0-8.0.1738/debian/changelog 2023-08-22 11:50:42.000000000 +0000
+++ pike8.0-8.0.1738/debian/changelog 2023-09-06 22:00:09.000000000 +0000
@@ -1,3 +1,10 @@
+pike8.0 (8.0.1738-1.2) unstable; urgency=medium
+
+ * Non-maintainer upload.
+ * Do not install former pike8.0-pcre files into -core (Closes: #1051287).
+
+ -- Bastian Germann <b...@debian.org> Wed, 06 Sep 2023 22:00:09 +0000
+
pike8.0 (8.0.1738-1.1) unstable; urgency=medium
* Non-maintainer upload.
diff -Nru pike8.0-8.0.1738/debian/rules pike8.0-8.0.1738/debian/rules
--- pike8.0-8.0.1738/debian/rules 2018-06-23 23:06:03.000000000 +0000
+++ pike8.0-8.0.1738/debian/rules 2023-09-06 22:00:09.000000000 +0000
@@ -117,6 +117,7 @@
--without-fftw \
--without-libpdf \
--without-libpanda \
+ --without-libpcre \
--without-GTK \
--without-GTK2 \
--without-bundles \
@@ -190,6 +191,7 @@
# Some cleaning
find "$(TMP)$(lib_prefix)" -name '.autodoc' -type f -exec rm -f '{}' ';'
+ find "$(TMP)$(lib_prefix)" -name '*Regexp_PCRE.*' -type f -delete
install -d -m755 $(TMP)/usr/share/pixmaps
install -m644 debian/pike.xpm $(TMP)/usr/share/pixmaps/$(PIKE).xpm
