[commit: ghc] master: Greater customization of GHCi prompt (533037c)

[git at git.haskell.org]

Repository : ssh://git@git.haskell.org/ghc

On branch  : master
Link       : http://ghc.haskell.org/trac/ghc/changeset/533037cc58a7c50e1c014e27e8b971d53e7b47bd/ghc

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commit 533037cc58a7c50e1c014e27e8b971d53e7b47bd
Author: niksaz <nikitasazanovich at gmail.com>
Date:   Sun May 1 13:34:45 2016 +0200

    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


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533037cc58a7c50e1c014e27e8b971d53e7b47bd
 docs/users_guide/ghci.rst                   |  48 +++++-
 ghc/GHCi/UI.hs                              | 257 ++++++++++++++++++++++------
 ghc/GHCi/UI/Monad.hs                        |   9 +-
 testsuite/tests/ghci/scripts/all.T          |   3 +
 testsuite/tests/ghci/scripts/ghci060.script |   7 +
 testsuite/tests/ghci/scripts/ghci060.stderr |   5 +
 testsuite/tests/ghci/scripts/ghci061.hs     |   5 +
 testsuite/tests/ghci/scripts/ghci061.script |   5 +
 testsuite/tests/ghci/scripts/ghci061.stderr |  16 ++
 9 files changed, 292 insertions(+), 63 deletions(-)

Diff suppressed because of size. To see it, use:

    git diff-tree --root --patch-with-stat --no-color --find-copies-harder --ignore-space-at-eol --cc 533037cc58a7c50e1c014e27e8b971d53e7b47bd