Proper quote marks, even when LANGUAGE is just ordinary en_US instead of en@quot; write Hrvoje Niksic with full diacritic marks.

po/Rules-quot

@@ -45,3 +45,8 @@ en@boldquot.insert-header: insert-header.sin
 mostlyclean: mostlyclean-quot
 mostlyclean-quot:
 	rm -f *.insert-header
+
+en_US.po: en_US.po-update
+
+en_US.po-update: en@quot.po
+	cp $^ en_US.po

po/boldquot.sed

@@ -8,3 +8,8 @@ s/“/“/g
 s/”/”/g
 s/‘/‘/g
 s/’/’/g
+
+# At least in all of our current strings, ' should be ’.
+s/'/’/g
+# Special: write Hrvoje’s last name properly.
+s/Niksic/Nikšić/g

po/quot.sed

@@ -4,3 +4,8 @@ s/ '\([^`']*\)' / ‘\1’ /g
 s/ '\([^`']*\)'$/ ‘\1’/g
 s/^'\([^`']*\)' /‘\1’ /g
 s/“”/""/g
+
+# At least in all of our current strings, ' should be ’.
+s/'/’/g
+# Special: write Hrvoje’s last name properly.
+s/Niksic/Nikšić/g