G'day Lex,
[...] The current defaults are C or C++ specific so in https://github.com/elextr/geany_stuff/raw/master/snippets.conf I moved them there and to Java, but I understand that other languages may want them as well so I decided to post here before committing. [...]
The current defaults also apply to PHP, JavaScript (and thus also Actionscript I'd guess), C#, Vala... basically if its syntax is based on C then those snippets should apply.