fix *.po check

* not work on Windows (enc=cp932 env)
* friendly error message: print error lines when fail to check
* new targets: check, checkclean

Author: koron

src/po/Makefile

@@ -1,7 +1,9 @@
 MASTER_PO = ja.po
+
 MOFILES = ja.mo \
 	  ja.euc-jp.mo \
 	  ja.sjis.mo
+
 CHECKFILES = ja.ck \
 	     ja.euc-jp.ck \
 	     ja.sjis.ck
@@ -10,7 +12,7 @@ MSGFMT = OLD_PO_FILE_INPUT=yes msgfmt
 
 .SUFFIXES: .po .mo .ck
 
-test: $(MOFILES) $(CHECKFILES)
+test: check $(MOFILES)
 
 update: ja.sjis.po ja.euc-jp.po
 
@@ -41,10 +43,10 @@ merge-force:
 	touch vim.pot
 	@$(MAKE) merge
 
-clean:
+clean: checkclean
 	rm -f sjiscorr sjiscorr.exe
 	rm -f ja.sjis.po ja.euc-jp.po
-	rm -f *.mo *.ck
+	rm -f *.mo
 
 #ja.po: vim.pot
 #	rm -f [email protected]
@@ -55,5 +57,11 @@ clean:
 	$(MSGFMT) -v -o $@ $<
 
 .po.ck:
-	vim -u NONE -e -X -S check.vim -c "if error == 0 | q | endif" -c cq $<
+	vim -u NONE --noplugins -e -s -X --cmd "set enc=utf-8" -S check.vim \
+	  -c "if error == 0 | q | else | num 2 | cq | endif" $<
 	touch $@
+
+check: $(CHECKFILES)
+
+checkclean:
+	rm -f *.ck