The Apache documentation on IfModule states

The module name argument is the file name of the module, at the time it was compiled. For example, mod_rewrite.c. ...

However, Apache 2.2 seems to accept the module id too. So, these both work:

<IfModule mod_filter.c>

and

<IfModule filter_module>

Is that true for all Apache versions? Should the first version be prefered or does the second yield any benefits?

_{I'm asking because HTML5 boilerplate uses the module id instead of the filename}