#5850: Greater customization of GHCi prompt -------------------------------------+------------------------------------- Reporter: JamesFisher | Owner: niksaz Type: feature request | Status: new Priority: normal | Milestone: Component: GHCi | Version: 7.4.1 Resolution: | Keywords: newcomer Operating System: Unknown/Multiple | Architecture: | Unknown/Multiple Type of failure: None/Unknown | Test Case: Blocked By: | Blocking: Related Tickets: #9994 | Differential Rev(s): Phab:D2084 Wiki Page: | -------------------------------------+------------------------------------- Comment (by Ben Gamari ): In [changeset:"533037cc58a7c50e1c014e27e8b971d53e7b47bd/ghc" 533037c/ghc]: {{{ #!CommitTicketReference repository="ghc" revision="533037cc58a7c50e1c014e27e8b971d53e7b47bd" Greater customization of GHCi prompt This patch is trying to redesign the :set prompt option to take not a String but a Haskell function, like [String] -> Int -> IO String, where [String] is the list of the names of the currently loaded modules and Int is the line number. Currently you may set prompt function with **:set promt-function [String] -> Int -> IO String** option and old version is also available - :set prompt String. So, it looks like I've almost completed this patch: 1) Now we have a lot of escape sequences - 13 to be exact. Most of them are similar to bash prompt escape sequences. Thus they are quite handy. 2) We may use the special escape sequence to call shell functions, for example "%call(ls -l -a)". 3) We may use :set prompt-function to set PFunction to handle prompt. It is just [String] -> Int -> IO String. Reviewers: erikd, austin, mpickering, bgamari Reviewed By: mpickering, bgamari Subscribers: mpickering, thomie Differential Revision: https://phabricator.haskell.org/D2084 GHC Trac Issues: #5850 }}} -- Ticket URL: http://ghc.haskell.org/trac/ghc/ticket/5850#comment:18 GHC http://www.haskell.org/ghc/ The Glasgow Haskell Compiler