[PATCH v2 4/4] Documentation/Makefile: narrow wildcard rules to our known files

["Ævar Arnfjörð Bjarmason" <avarab@gmail.com>]

Instead of declaring that we'll generate e.g. any "%.1" from a
corresponding "%.xml" let's narrow that list down to only our known
manpage files, and likewise for %.xml.

We already generated e.g. "man1" on the basis of "$(DOC_MAN1)", we
just weren't keeping track of what we were generating exactly in the
these middle steps.

Signed-off-by: Ævar Arnfjörð Bjarmason <avarab@gmail.com>
---
 Documentation/Makefile | 16 ++++++++--------
 1 file changed, 8 insertions(+), 8 deletions(-)

diff --git a/Documentation/Makefile b/Documentation/Makefile
index 89929e3d60b..f84b54ac093 100644
--- a/Documentation/Makefile
+++ b/Documentation/Makefile
@@ -356,14 +356,14 @@ manpage-base-url.xsl: manpage-base-url.xsl.in
 	$(QUIET_GEN)sed "s|@@MAN_BASE_URL@@|$(MAN_BASE_URL)|" $< > $@
 
 $(DOC_MANN): manpage-base-url.xsl $(wildcard manpage*.xsl)
-%.1 : %.xml
-	$(QUIET_XMLTO)$(XMLTO) -m $(MANPAGE_XSL) $(XMLTO_EXTRA) man $<
-%.5 : %.xml
-	$(QUIET_XMLTO)$(XMLTO) -m $(MANPAGE_XSL) $(XMLTO_EXTRA) man $<
-%.7 : %.xml
-	$(QUIET_XMLTO)$(XMLTO) -m $(MANPAGE_XSL) $(XMLTO_EXTRA) man $<
-
-%.xml : %.txt $(ASCIIDOC_DEPS)
+define doc-mann-rule
+$$(DOC_MAN$(1)) : %.$(1) : %.xml
+	$$(QUIET_XMLTO)$$(XMLTO) -m $$(MANPAGE_XSL) $$(XMLTO_EXTRA) man $$<
+
+endef
+$(eval $(foreach n,1 5 7,$(call doc-mann-rule,$(n))))
+
+$(MAN_XML): %.xml : %.txt $(ASCIIDOC_DEPS)
 	$(QUIET_ASCIIDOC)$(TXT_TO_XML) -d manpage -o $@ $<
 
 user-manual.xml: user-manual.txt user-manual.conf asciidoctor-extensions.rb GIT-ASCIIDOCFLAGS
-- 
2.39.0.rc0.993.g0c499e58e3b