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addSGMLCatalogs () {
if test -d $1/sgml/dtd; then
for i in $(find $1/sgml/dtd -name docbook.cat); do
export SGML_CATALOG_FILES="${SGML_CATALOG_FILES:+:}$i"
done
fi
}
if test -z "$sgmlHookDone"; then
sgmlHookDone=1
# Set http_proxy and ftp_proxy to a invalid host to prevent
# xmllint and xsltproc from trying to download DTDs from the
# network even when --nonet is not given. That would be impure.
# (Note that .invalid is a reserved domain guaranteed not to
# work.)
export http_proxy=http://nodtd.invalid/
export ftp_proxy=http://nodtd.invalid/
export SGML_CATALOG_FILES
envHooks+=(addSGMLCatalogs)
fi
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