me:
Currently, long option names _must_ have two dashes (e.g. --foo), whereas this patch permits a single dash (e.g. -foo) where there is no short option name to be confused with it (e.g. -f).
nominolo:
Are, you sure this is a good idea? What if options are passed through, or the -f option is later added? Then users have to change there scripts, maxefiles, etc. that use these options. I don't think this scales well.
It is the behaviour of GNU GetOpt, which is very widely used and understood. The proposal is merely that the Haskell implementation should match the de facto standard in this area. (It even originally contained a comment stating that it was deficient here!) I believe there are a large number of people who use unix-style commandlines who would expect this behaviour. lemming:
I think the program user should be encouraged to use two dashes for the 'foo' option, in order to allow the programmer to add options -f and -o later without the risk of breaking existing scripts.
Sure, and all the usage + error messages generated by GetOpt mention only the two-dash form, as a way of encouraging forward compatibility. Regards, Malcolm