#7843: GHC should be able to list all possible command line options -----------------------------+---------------------------------------------- Reporter: jstolarek | Owner: jstolarek Type: feature request | Status: patch Priority: normal | Component: Driver Version: 7.6.2 | Keywords: Os: Unknown/Multiple | Architecture: Unknown/Multiple Failure: None/Unknown | Blockedby: Blocking: | Related: -----------------------------+---------------------------------------------- Changes (by jstolarek): * status: new => patch -- Ticket URL: http://hackage.haskell.org/trac/ghc/ticket/7843#comment:2 GHC http://www.haskell.org/ghc/ The Glasgow Haskell Compiler

#7843: GHC should be able to list all possible command line options -----------------------------+---------------------------------------------- Reporter: jstolarek | Owner: jstolarek Type: feature request | Status: infoneeded Priority: normal | Component: Driver Version: 7.6.2 | Keywords: Os: Unknown/Multiple | Architecture: Unknown/Multiple Failure: None/Unknown | Blockedby: Blocking: | Related: -----------------------------+---------------------------------------------- Changes (by ezyang): * status: patch => infoneeded Comment: Hey Jan, sorry about the delay. It looks like the patch no longer applies to head; could you rebase it (and also squash the commits in the process?) -- Ticket URL: http://hackage.haskell.org/trac/ghc/ticket/7843#comment:5 GHC http://www.haskell.org/ghc/ The Glasgow Haskell Compiler

#7843: GHC should be able to list all possible command line options -----------------------------+---------------------------------------------- Reporter: jstolarek | Owner: jstolarek Type: feature request | Status: patch Priority: normal | Component: Driver Version: 7.6.2 | Keywords: Os: Unknown/Multiple | Architecture: Unknown/Multiple Failure: None/Unknown | Blockedby: Blocking: | Related: -----------------------------+---------------------------------------------- Changes (by jstolarek): * status: infoneeded => patch -- Ticket URL: http://hackage.haskell.org/trac/ghc/ticket/7843#comment:7 GHC http://www.haskell.org/ghc/ The Glasgow Haskell Compiler

#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: | ---------------------------------+------------------------------------------ Changes (by igloo): * difficulty: => Unknown Comment: Why do you filter out length 1 and 2 options? -- Ticket URL: http://hackage.haskell.org/trac/ghc/ticket/7843#comment:9 GHC http://www.haskell.org/ghc/ The Glasgow Haskell Compiler

#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 igloo): Well, you may not be sure that the flag exists, and be looking at the list of completions. Also, there's nothing about the command "ghc --show-options" that suggests that it is only for use by autocompletion. I would expect it would show all options. So if the shorter options don't cause any problems, I'd suggest not including the filter. -- Ticket URL: http://hackage.haskell.org/trac/ghc/ticket/7843#comment:11 GHC http://www.haskell.org/ghc/ The Glasgow Haskell Compiler

#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 jan.stolarek@…): commit a28731b3a14ff6ef9c7dca8327d073e6ebb6b773 {{{ Author: Jan Stolarek Date: Tue Jun 4 10:28:32 2013 +0200 Add --show-options to list all flags (Fixes #7843) compiler/main/StaticFlags.hs | 13 ++++++++++--- ghc/Main.hs | 21 ++++++++++++++++++++- 2 files changed, 30 insertions(+), 4 deletions(-) }}} -- Ticket URL: http://hackage.haskell.org/trac/ghc/ticket/7843#comment:13 GHC http://www.haskell.org/ghc/ The Glasgow Haskell Compiler

#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

#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 jan.stolarek@…): commit 2280f9651ea4f08d8d7c29affbb134d6769e42e0 {{{ Author: Jan Stolarek Date: Fri Jun 7 09:15:32 2013 +0200 --show-options lists all flags. Add user documentation for #7843 docs/users_guide/flags.xml | 6 ++++++ docs/users_guide/using.xml | 12 ++++++++++++ ghc/Main.hs | 2 +- 3 files changed, 19 insertions(+), 1 deletions(-) }}} -- Ticket URL: http://hackage.haskell.org/trac/ghc/ticket/7843#comment:17 GHC http://www.haskell.org/ghc/ The Glasgow Haskell Compiler