[galaxy-dev] GTF sniffer

I have a tool that uses .gtf input, when I upload a .gtf file it is automatically recognised as a .gff file meaning I have to manually change the format to gtf. I know gff and gtf are very similar but is it possible to have a gtf sniffer? Out of interest is there any documentation relating to writing sniffers for different datatypes I should probably have a go at writing a few for my on. Thanks. Shaun Webb -- The University of Edinburgh is a charitable body, registered in Scotland, with registration number SC005336.