patch 8.1.0111: .po files do not use recommended names

Problem:    .po files do not use recommended names.
Solution:   Give a warning if the recommended name is not used.  Accept the
            recommended name for conversion. (Christian Brabandt, Ken Takata)

src/po/Makefile

@@ -87,7 +87,7 @@ sjiscorr: sjiscorr.c
 
 ja.euc-jp.po: ja.po
 	iconv -f utf-8 -t euc-jp ja.po | \
-		sed -e 's/charset=utf-8/charset=euc-jp/' -e 's/# Original translations/# Generated from ja.po, DO NOT EDIT/' > ja.euc-jp.po
+		sed -e 's/charset=[uU][tT][fF]-8/charset=euc-jp/' -e 's/# Original translations/# Generated from ja.po, DO NOT EDIT/' > ja.euc-jp.po
 
 # Convert cs.po to create cs.cp1250.po.
 cs.cp1250.po: cs.po
@@ -105,7 +105,7 @@ pl.cp1250.po: pl.po
 pl.UTF-8.po: pl.po
 	rm -f pl.UTF-8.po
 	iconv -f iso-8859-2 -t utf-8 pl.po | \
-		sed -e 's/charset=ISO-8859-2/charset=utf-8/' -e 's/# Original translations/# Generated from pl.po, DO NOT EDIT/' > pl.UTF-8.po
+		sed -e 's/charset=ISO-8859-2/charset=UTF-8/' -e 's/# Original translations/# Generated from pl.po, DO NOT EDIT/' > pl.UTF-8.po
 
 # Convert sk.po to create sk.cp1250.po.
 sk.cp1250.po: sk.po
@@ -119,7 +119,7 @@ sk.cp1250.po: sk.po
 zh_CN.cp936.po: zh_CN.UTF-8.po
 	rm -f zh_CN.cp936.po
 	iconv -f UTF-8 -t cp936 zh_CN.UTF-8.po | \
-		sed -e 's/charset=utf-8/charset=gbk/' -e 's/# Original translations/# Generated from zh_CN.UTF-8.po, DO NOT EDIT/' > zh_CN.cp936.po
+		sed -e 's/charset=[uU][tT][fF]-8/charset=gbk/' -e 's/# Original translations/# Generated from zh_CN.UTF-8.po, DO NOT EDIT/' > zh_CN.cp936.po
 
 # Convert ko.UTF-8.po to create ko.po.
 ko.po: ko.UTF-8.po

src/po/check.vim

@@ -173,12 +173,37 @@ elseif !plural && search('^"Plural-Forms: ', 'n')
   " We allow for a stray plural header, msginit adds one.
 endif
 
+" Check that 8bit encoding is used instead of 8-bit
+let cte = search('^"Content-Transfer-Encoding:\s\+8-bit', 'n')
+let ctc = search('^"Content-Type:.*;\s\+\<charset=[iI][sS][oO]_', 'n')
+let ctu = search('^"Content-Type:.*;\s\+\<charset=utf-8', 'n')
+if cte
+  echomsg "Content-Transfer-Encoding should be 8bit instead of 8-bit"
+  " TODO: make this an error
+  " if error == 0
+  "   let error = cte
+  " endif
+elseif ctc
+  echomsg "Content-Type charset should be 'ISO-...' instead of 'ISO_...'"
+  " TODO: make this an error
+  " if error == 0
+  "   let error = ct
+  " endif
+elseif ctu
+  echomsg "Content-Type charset should be 'UTF-8' instead of 'utf-8'"
+  " TODO: make this an error
+  " if error == 0
+  "   let error = ct
+  " endif
+endif
+
 
 if error == 0
   " If all was OK restore the view.
   call winrestview(wsv)
   echomsg "OK"
 else
+  " Put the cursor on the line with the error.
   exe error
 endif
 

src/po/sjiscorr.c

@@ -16,7 +16,8 @@ main(int argc, char **argv)
 	{
 		for (p = buffer; *p != 0; p++)
 		{
-			if (strncmp(p, "charset=utf-8", 13) == 0)
+			if (strncmp(p, "charset=utf-8", 13) == 0
+				|| strncmp(p, "charset=UTF-8", 13) == 0)
 			{
 				fputs("charset=cp932", stdout);
 				p += 12;

src/version.c

@@ -789,6 +789,8 @@ static char *(features[]) =
 
 static int included_patches[] =
 {   /* Add new patch number below this line */
+/**/
+    111,
 /**/
     110,
 /**/