Merge branch 'jx/utf8-printf-width'

Use a new helper that prints a message and counts its display width
to align the help messages parse-options produces.

* jx/utf8-printf-width:
  Add utf8_fprintf helper that returns correct number of columns

utf8.h

@@ -8,6 +8,7 @@ int utf8_strwidth(const char *string);
 int is_utf8(const char *text);
 int is_encoding_utf8(const char *name);
 int same_encoding(const char *, const char *);
+int utf8_fprintf(FILE *, const char *, ...);
 
 void strbuf_add_wrapped_text(struct strbuf *buf,
 		const char *text, int indent, int indent2, int width);