parser_write:fix shebang for oneshot in case of custom build

src/lib66/parser_write.c

@@ -868,9 +868,17 @@ int write_exec(sv_alltype *sv, sv_exec *exec,char const *file,char const *dst,in
 			}
 			break ;
 		case CUSTOM:
-			if (!stralloc_cats(&shebang, "#!")) retstralloc(0,"write_exec") ;
-			if (!stralloc_cats(&shebang, keep.s+exec->shebang)) retstralloc(0,"write_exec") ;
-			if (!stralloc_cats(&shebang,"\n")) retstralloc(0,"write_exec") ;
+			if (type != ONESHOT)
+			{
+				if (!stralloc_cats(&shebang, "#!")) retstralloc(0,"write_exec") ;
+				if (!stralloc_cats(&shebang, keep.s+exec->shebang)) retstralloc(0,"write_exec") ;
+				if (!stralloc_cats(&shebang,"\n")) retstralloc(0,"write_exec") ;
+			}
+			else
+			{
+				if (!stralloc_cats(&shebang, keep.s+exec->shebang)) retstralloc(0,"write_exec") ;			
+				if (!stralloc_cats(&shebang," \\\n\"")) retstralloc(0,"write_exec") ;
+			}
 			break ;
 		default:
 			VERBO3 strerr_warnw3x("unknow ", get_keybyid(exec->build)," build type") ;
@@ -884,6 +892,10 @@ int write_exec(sv_alltype *sv, sv_exec *exec,char const *file,char const *dst,in
 	if (!stralloc_0(&shebang)) retstralloc(0,"write_exec") ;
 	/** close command */
 	if (!stralloc_cats(&runuser, keep.s+exec->exec)) retstralloc(0,"write_exec") ;
+	if (type == ONESHOT)
+	{
+		if (!stralloc_cats(&runuser," \"")) retstralloc(0,"write_exec") ;
+	}
 	if (!stralloc_cats(&runuser,"\n")) retstralloc(0,"write_exec") ;
 	if (!stralloc_0(&runuser)) retstralloc(0,"write_exec") ;