[groff] 03/08: contrib/hdtbl/hdtbl.am: Add explanatory comment.

[G. Branden Robinson]

gbranden pushed a commit to branch master
in repository groff.

commit e9f907d2f4f358b2e1268b3683a25ca3a0b282b8
Author: G. Branden Robinson <g.branden.robinson@gmail.com>
AuthorDate: Fri Nov 15 14:59:44 2024 -0600

    contrib/hdtbl/hdtbl.am: Add explanatory comment.
---
 contrib/hdtbl/hdtbl.am | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/contrib/hdtbl/hdtbl.am b/contrib/hdtbl/hdtbl.am
index 4d28e6492..eef8e8ce6 100644
--- a/contrib/hdtbl/hdtbl.am
+++ b/contrib/hdtbl/hdtbl.am
@@ -119,6 +119,8 @@ SUFFIXES += .roff .in .ps
        && sed -e "s|[@]fontdir[@]|$(fontdir)|" \
               -e "s|[@]EGREP[@]|$(EGREP)|" $< >$@
 
+# groff(1)'s `-I` implies `-g` and `-s`, so we must depend on grn and
+# soelim even though the documents don't require them.
 $(HDTBLPROCESSEDEXAMPLEFILES): $(DOC_GNU_EPS) groff troff eqn pic tbl \
   grops grn soelim font/devps/stamp contrib/hdtbl/examples/common.roff