shithub: riscv

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Fix acme crash: Get D in a new window with D being an existing directory

--- a/sys/src/cmd/acme/text.c

+++ b/sys/src/cmd/acme/text.c

@@ -213,7 +213,7 @@

 		}

 		t->w->isdir = TRUE;

 		t->w->filemenu = FALSE;

-		if(t->file->name[t->file->nname-1] != '/'){

+		if(t->file->nname > 0 && t->file->name[t->file->nname-1] != '/'){

 			rp = runemalloc(t->file->nname+1);

 			runemove(rp, t->file->name, t->file->nname);

 			rp[t->file->nname] = '/';