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git/log: fix formatting of commit messages with multibyte characters

--- a/log.c

+++ b/log.c

@@ -146,7 +146,9 @@

 		p = o->commit->msg;

 		e = p + o->commit->nmsg;

 		q = nextline(p, e);

-		Bprint(out, "%H %.*s\n", o->hash, (int)(q - p), p);

+		Bprint(out, "%H ", o->hash);

+		Bwrite(out, p, q - p);

+		Bputc(out, '\n');

 	}else{

 		tmtime(&tm, o->commit->mtime, tzload("local"));

 		Bprint(out, "Hash:\t%H\n", o->hash);

@@ -157,7 +159,9 @@

 		e = p + o->commit->nmsg;

 		for(; p != e; p = q){

 			q = nextline(p, e);

-			Bprint(out, "\t%.*s\n", (int)(q - p), p);

+			Bputc(out, '\t');

+			Bwrite(out, p, q - p);

+			Bputc(out, '\n');

 			if(q != e)

 				q++;

 		}