#7843: GHC should be able to list all possible command line options ---------------------------------+------------------------------------------ Reporter: jstolarek | Owner: jstolarek Type: feature request | Status: patch Priority: normal | Milestone: Component: Driver | Version: 7.6.2 Keywords: | Os: Unknown/Multiple Architecture: Unknown/Multiple | Failure: None/Unknown Difficulty: Unknown | Testcase: Blockedby: | Blocking: Related: | ---------------------------------+------------------------------------------ Comment(by jstolarek): Whops, I didn't think about that. I'm attaching two patches. First of them updates user documentation. After playing a bit with autocompletion I think that the decision to exclude short options was wrong. Consider this example of autocmpletion without filtering out short options: {{{ [killy@xerxes : ~] ghc -c -c -caf-all -cpp }}} If the `filter` is used then the user will be hinted with only two last flags, which indeed might lead her to believe that there is no `-c` flag. Therefore I think that `filter` should be removed - my second patch updates the user documentation and removes the filter. Also, without the `filter` the `-O` option is listed twice. I believe this is because `-O` can be used by itself and also with a parameter (e.g. `-O2`). Possible solutions are: - use `nub` - use some hack to remove this single option - ignore it, because shell will not list duplicates anyway: {{{ [killy@xerxes : ~] ghc -O -O -Odph -Onot }}} Since `nub` is O(n^2^) and I don't like hacks I chose the third option. -- Ticket URL: http://hackage.haskell.org/trac/ghc/ticket/7843#comment:15 GHC http://www.haskell.org/ghc/ The Glasgow Haskell Compiler