#9259: GHCi should list its available command line options -------------------------------+------------------------------------------- Reporter: jstolarek | Owner: Type: feature | Status: new request | Milestone: Priority: normal | Version: Component: Driver | Keywords: Resolution: | Architecture: Unknown/Multiple Operating System: | Difficulty: Easy (less than 1 hour) Unknown/Multiple | Blocked By: Type of failure: | Related Tickets: None/Unknown | Test Case: | Blocking: | -------------------------------+------------------------------------------- Comment (by jstolarek): Oh, and once this is done we should update [[GhcFile(driver/ghci- usage.txt)]] to inform user about this possibility (see [[GhcFile(driver /ghc-usage.txt)]] for an example). -- Ticket URL: http://ghc.haskell.org/trac/ghc/ticket/9259#comment:1 GHC http://www.haskell.org/ghc/ The Glasgow Haskell Compiler

#9259: GHCi should list its available command line options -------------------------------------+------------------------------------- Reporter: jstolarek | Owner: Type: feature | Status: new request | Milestone: Priority: normal | Version: Component: Driver | Keywords: Resolution: | Architecture: Unknown/Multiple Operating System: | Difficulty: Unknown Unknown/Multiple | Blocked By: Type of failure: | Related Tickets: None/Unknown | Test Case: | Blocking: | Differential Revisions: | -------------------------------------+------------------------------------- Comment (by kolmodin): Making `--interactive` and `--show-options` work together is simple, just a few more lines to `setMode`. The time consuming part with this task is to cleanly separate which flags work in GHC and which work in GHCi. The flags are defined in a few different places; * `ModeFlags` defined in `ghc/Main.hs` which apply to both GHC and GHCi. * `StaticFlags` defined in `compiler/main/StaticFlags.hs` which applies to both GHC and GHCi. * DynFlags defined in `compiler/main/DynFlags.hs`. There are a few different kinds of flags here (dynflags, package flags, fflags, fwarn, ...), each of which where some are for GHC and some for GHCi. For some flags there is code guarding to make sure you don't mix them, like together with `--interactive` you cannot use `-prof`, `-threaded`, `-unreg`, `-debug` or `-ticky`. For other flags there is no such code, and it's not always obvious where each flag has effect. -- Ticket URL: http://ghc.haskell.org/trac/ghc/ticket/9259#comment:3 GHC http://www.haskell.org/ghc/ The Glasgow Haskell Compiler

#9259: GHCi should list its available command line options -------------------------------------+------------------------------------- Reporter: jstolarek | Owner: kolmodin Type: feature | Status: new request | Milestone: Priority: normal | Version: Component: Driver | Keywords: Resolution: | Architecture: Unknown/Multiple Operating System: | Difficulty: Unknown Unknown/Multiple | Blocked By: Type of failure: | Related Tickets: None/Unknown | Test Case: | Blocking: | Differential Revisions: Phab:D337 | -------------------------------------+------------------------------------- Changes (by kolmodin): * differential: => Phab:D337 -- Ticket URL: http://ghc.haskell.org/trac/ghc/ticket/9259#comment:5 GHC http://www.haskell.org/ghc/ The Glasgow Haskell Compiler

#9259: GHCi should list its available command line options -------------------------------------+------------------------------------- Reporter: jstolarek | Owner: kolmodin Type: feature | Status: new request | Milestone: Priority: normal | Version: Component: Driver | Keywords: newcomer Resolution: | Architecture: Unknown/Multiple Operating System: | Difficulty: Unknown Unknown/Multiple | Blocked By: Type of failure: | Related Tickets: None/Unknown | Test Case: | Blocking: | Differential Revisions: Phab:D337 | -------------------------------------+------------------------------------- Changes (by jstolarek): * keywords: => newcomer -- Ticket URL: http://ghc.haskell.org/trac/ghc/ticket/9259#comment:7 GHC http://www.haskell.org/ghc/ The Glasgow Haskell Compiler

#9259: GHCi should list its available command line options -------------------------------------+------------------------------------- Reporter: jstolarek | Owner: kolmodin Type: feature | Status: new request | Milestone: Priority: normal | Version: Component: Driver | Keywords: newcomer Resolution: | Architecture: Unknown/Multiple Operating System: | Difficulty: Unknown Unknown/Multiple | Blocked By: Type of failure: | Related Tickets: None/Unknown | Test Case: | Blocking: | Differential Revisions: Phab:D337 | -------------------------------------+------------------------------------- Comment (by Austin Seipp ): In [changeset:"624a7c5a2eee0c0ba486a45550680052c2c79849/ghc"]: {{{ #!CommitTicketReference repository="ghc" revision="624a7c5a2eee0c0ba486a45550680052c2c79849" ghc: allow --show-options and --interactive together Summary: Previously 'ghc --show-options' showed all options that GHC can possibly accept. With this patch, it'll only show the options that have effect in non-interactive modes. This change also adds support for using 'ghc --interactive --show-options' which previously was disallowed. This command will show all options that have effect in the interactive mode. The CmdLineParser is updated to know about the GHC modes, and then each flag is annotated with which mode it has effect. This fixes #9259. Test Plan: Try out --show-options with --interactive on the command line. With and without --interactive should give different results. Run the test suite, mode001 has been updated to verify this new flag combination. Reviewers: austin, jstolarek Reviewed By: austin, jstolarek Subscribers: jstolarek, thomie, carter, simonmar Differential Revision: https://phabricator.haskell.org/D337 GHC Trac Issues: #9259 }}} -- Ticket URL: http://ghc.haskell.org/trac/ghc/ticket/9259#comment:9 GHC http://www.haskell.org/ghc/ The Glasgow Haskell Compiler

#9259: GHCi should list its available command line options -------------------------------------+------------------------------------- Reporter: jstolarek | Owner: kolmodin Type: feature | Status: new request | Milestone: Priority: normal | Version: Component: Driver | Keywords: newcomer Resolution: | Architecture: Unknown/Multiple Operating System: | Difficulty: Unknown Unknown/Multiple | Blocked By: Type of failure: | Related Tickets: None/Unknown | Test Case: | Blocking: | Differential Revisions: Phab:D337 | -------------------------------------+------------------------------------- Comment (by Austin Seipp ): In [changeset:"6d47ab3ab3684c4245bdccd97d19db83887aae9c/ghc"]: {{{ #!CommitTicketReference repository="ghc" revision="6d47ab3ab3684c4245bdccd97d19db83887aae9c" Shorten long lines in DynFlags, add details to ghci usage guide. Summary: Shorten long lines in DynFlags. Describe --show-options in ghci usage guide. Reviewers: jstolarek, austin Reviewed By: jstolarek, austin Subscribers: thomie, carter Differential Revision: https://phabricator.haskell.org/D532 GHC Trac Issues: #9259 }}} -- Ticket URL: http://ghc.haskell.org/trac/ghc/ticket/9259#comment:11 GHC http://www.haskell.org/ghc/ The Glasgow Haskell Compiler

#9259: GHCi should list its available command line options -------------------------------------+------------------------------------- Reporter: jstolarek | Owner: kolmodin Type: feature request | Status: closed Priority: normal | Milestone: 7.12.1 Component: Driver | Version: Resolution: fixed | Keywords: newcomer Operating System: Unknown/Multiple | Architecture: Type of failure: None/Unknown | Unknown/Multiple Blocked By: | Test Case: Related Tickets: | Blocking: | Differential Revisions: Phab:D337 -------------------------------------+------------------------------------- Comment (by jstolarek): Replying to [comment:12 thomie]:

I think all work is done here.

Well, I think we still didn't solve this: * Some flags are defined in DynFlags but not documented in the User's Guide. Should they be marked as hidden? Mail ghc-devs and find out. I don't think we git any replies about these flags and without that we cannot do better. Not sure if we should keep this ticket open as a reminder? -- Ticket URL: http://ghc.haskell.org/trac/ghc/ticket/9259#comment:13 GHC http://www.haskell.org/ghc/ The Glasgow Haskell Compiler