From mboxrd@z Thu Jan  1 00:00:00 1970
From: zwz <zhangweize@gmail.com>
Subject: How to do this by MACRO? (feature request)
Date: Thu, 29 Oct 2009 19:19:38 +0800
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To: emacs-orgmode@gnu.org

I want to insert a series of images in the org file.
The images are located in a directory, with names in such a pattern
"cat-N00000.png", where N is a number.

The direct and compact macro is something like this:
#+MACRO: cat-imgs /path/to/cat-${1}00000.png

Here the {} is used to separate the placeholder from the zeros, which in
fact is not supported in current version.

I know that I can use 
#+MACRO: cat-imgs2 /path/to/cat-$1.png

but it is a little tedious when I use it.
I also tried to define a null macro first, which was then used as a
separator separating the placeholder from the zeros. But it fails.
#+MACRO null
#+MACRO: cat-imgs /path/to/cat-$1{{{null}}}00000.png

I wonder if there is a feasible way.