Naming regulations: _ or - in file names

[Streusel]

While performing a manual merge on some of my files I noticed c_winapi and cpp-winapi. Could we please enforce naming rules such that we only use underscores or dashes? Unless the language actually includes these I don't see why we use both.
That would be my only concern at the moment.

Here are the ones I can find
Using "-"

• cpp-qt.php
• cpp-winapi.php
• ocaml-brief.php
• php-brief.php

Using "_"

• apt_sources.php
• c_loadrunner.php
• c_mac.php
• c_winapi.php
• org_conf.php

[BenBE]

Basically use dash (-) if a specialised version of another language (e.g. cpp-qt, php-brief), use underscore (_) when the name would otherwise contain disallowed characters (e.g. apt_sources, xorg_conf).

Thus the only non-conforming files from your list are the 3 language files for variants of C (c_loadrunner, c_mac, c_winapi) which should receive a dash.