Hi everyone! Two years ago there was a request about such feature http://lists.geany.org/pipermail/users/2014-January/009121.html
And now there is patch that adds support for highlighting C function names. patch need some testing, if you will find wrong highlighting let me know.
Branch with path located here https://github.com/linvinus/geany/commits/highlight_function_names after install you need add new colors in your filetypes.c ``` function_declaration=class function=function ```