Merge branch 'jk/make-tags-find-sources-tweak' into maint

Update the procedure to generate "tags" for developer support.

* jk/make-tags-find-sources-tweak:
  Makefile: exclude contrib from FIND_SOURCE_FILES
  Makefile: match shell scripts in FIND_SOURCE_FILES
  Makefile: exclude test cruft from FIND_SOURCE_FILES
  Makefile: reformat FIND_SOURCE_FILES

Makefile

@@ -2149,9 +2149,22 @@ endif
 po/build/locale/%/LC_MESSAGES/git.mo: po/%.po
 	$(QUIET_MSGFMT)mkdir -p $(dir $@) && $(MSGFMT) -o $@ $<
 
-FIND_SOURCE_FILES = ( git ls-files '*.[hcS]' 2>/dev/null || \
-			$(FIND) . \( -name .git -type d -prune \) \
-				-o \( -name '*.[hcS]' -type f -print \) )
+FIND_SOURCE_FILES = ( \
+	git ls-files \
+		'*.[hcS]' \
+		'*.sh' \
+		':!*[tp][0-9][0-9][0-9][0-9]*' \
+		':!contrib' \
+		2>/dev/null || \
+	$(FIND) . \
+		\( -name .git -type d -prune \) \
+		-o \( -name '[tp][0-9][0-9][0-9][0-9]*' -prune \) \
+		-o \( -name contrib -type d -prune \) \
+		-o \( -name build -type d -prune \) \
+		-o \( -name 'trash*' -type d -prune \) \
+		-o \( -name '*.[hcS]' -type f -print \) \
+		-o \( -name '*.sh' -type f -print \) \
+	)
 
 $(ETAGS_TARGET): FORCE
 	$(RM) $(ETAGS_TARGET)