Use portable format specifiers: Improve arguments formatting.

At some places, printf-like function's arguments styling could be
improved to enhance readability.

src/buffer.c

@@ -2179,7 +2179,8 @@ void buflist_list(exarg_T *eap)
       IObuff[len++] = ' ';
     } while (--i > 0 && len < IOSIZE - 18);
     vim_snprintf((char *)IObuff + len, (size_t)(IOSIZE - len),
-        _("line %" PRId64), buf == curbuf ? (int64_t)curwin->w_cursor.lnum
+        _("line %" PRId64),
+        buf == curbuf ? (int64_t)curwin->w_cursor.lnum
                       : (int64_t)buflist_findlnum(buf));
     msg_outtrans(IObuff);
     out_flush();            /* output one line at a time */

src/ex_cmds.c

@@ -4480,9 +4480,8 @@ do_sub_msg (
           "%s", count_only ? _("1 match") : _("1 substitution"));
     else
       vim_snprintf_add((char *)msg_buf, sizeof(msg_buf),
-          count_only ?
-          _("%" PRId64 " matches") :
-          _("%" PRId64 " substitutions"),
+          count_only ? _("%" PRId64 " matches")
+                     : _("%" PRId64 " substitutions"),
           (int64_t)sub_nsubs);
     if (sub_nlines == 1)
       vim_snprintf_add((char *)msg_buf, sizeof(msg_buf),

src/screen.c

@@ -7897,8 +7897,7 @@ static void win_redr_ruler(win_T *wp, int always)
      * To avoid portability problems we use strlen() here.
      */
     vim_snprintf((char *)buffer, RULER_BUF_LEN, "%" PRId64 ",",
-        (wp->w_buffer->b_ml.ml_flags & ML_EMPTY)
-        ? (int64_t)0L
+        (wp->w_buffer->b_ml.ml_flags & ML_EMPTY) ? (int64_t)0L
                                                  : (int64_t)wp->w_cursor.lnum);
     len = STRLEN(buffer);
     col_print(buffer + len, RULER_BUF_LEN - len,