ctags for c99 only

I've been looking through ctags man pages but I haven't found anything that will tell ctags to only record prototypes for c99 header files.

Essentially, I h开发者_C百科ave header files for both C and C++ files, but I only want those that correspond to c99 files (ie: no class stuff) to be outputted.

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ctags has the option --language that can force it to interpret files as being of a specific type.