===================================
 Fancy Index module Hacking HOW-TO
===================================

.. contents::


How to modify the template
==========================

The template is in the ``template.html`` file. Note that comment markers are
used to control how the ``template.awk`` Awk script generates the C header
which gets ultimately included in the compiled object code. Comment markers
have the ``<!-- var identifier -->`` format. Here ``identifier`` must be
a valid C identifier. All the text following the marker until the next
marker will be flattened into a C string.

If the identifier is ``NONE`` (capitalized) the text from that marker up to
the next marker will be discarded.


Regenerating the C header
~~~~~~~~~~~~~~~~~~~~~~~~~
You will need Awk. I hope any decent implementation will do, but the GNU one
is known to work flawlessly. Just do::

  $ awk -f template.awk template.html > template.h

If your copy of ``awk`` is not the GNU implementation, you will need to
install it and use ``gawk`` instead in the command line above.

.. vim: spell spelllang=en expandtab

