Follow-up Comment #7, bug #66479 (group groff): Instead, I fount the following sh arithmetic expression to work:
git diff
diff --git a/contrib/hdtbl/examples/test-hdtbl.sh.in
b/contrib/hdtbl/examples/test-hdtbl.sh.in
index 3b5088db6..097b96640 100644
--- a/contrib/hdtbl/examples/test-hdtbl.sh.in
+++ b/contrib/hdtbl/examples/test-hdtbl.sh.in
@@ -44,7 +44,7 @@ check_number_pages()
res=$("$gs_program" -o /dev/null/ -sDEVICE=bbox "$1" 2>&1 \
| grep HiResBoundingBox | wc -l)
# macOS `wc` prefixes the line count with spaces. Get rid of them.
- res=$(expr "$res" + 0) || exit 99
+ res=$((res + 0)) || exit 99
if [ "$res" != $2 ]
then
Maybe that would be portable?
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