adding docs in the piki format.
This commit is contained in:
Kazu Yamamoto
parent
dbd94c4765
commit
4f768a8bdf
10
doc/Makefile
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10
doc/Makefile
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@ -0,0 +1,10 @@
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all:
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piki template.html index.piki > index.html
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piki template.html install.piki > install.html
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piki template.html ghc-mod.piki > ghc-mod.html
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piki template.html ghc-modi.piki > ghc-modi.html
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piki template.html emacs.piki > emacs.html
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piki template.html preparation.piki > preparation.html
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piki template.html copyright.piki > copyright.html
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piki template.html history.piki > history.html
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piki template.html bug.piki > bug.html
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41
doc/bug.piki
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41
doc/bug.piki
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@ -0,0 +1,41 @@
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*Bugs
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If you found a bug relating the ghc-mod/ghc-modi commands or the ghc-mod library or the haskell-mode sub module, please record a ["issue on github" https://github.com/kazu-yamamoto/ghc-mod/issues].
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**ghc-mod
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***ghc-mod cannot work if a ".hsc" file exist
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Please convert it to ".hs" by "cabal build" or by hand with "hsc2hs".
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***ghc-mod cannot work if "Paths_<package>.hs" is missing
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Please create "Paths_<package>.hs" by "cabal build". If you want to create it by hand, please install the [cab http://www.mew.org/~kazu/proj/cab/en/] command.
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Typing "cab genpaths" in your package directory would help you.
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**ghc-modi
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***Ctr-c does not terminate ghc-modi
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ghc-modi uses multiple threads of Ghc monad.
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Ghc monad installs its own signal handlers
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and multiple threads of Ghc monad make the world messy.
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I cannot find a workaround.
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Just type RET to terminate ghc-modi.
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**Emacs front end
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***C-xC-s modifies the timestamp of the file even if there is no modification.
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In order to reload the file and check the syntax with GHC API (ghc-modi),
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it is necessary to update the timestamp of the file.
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A temporary file cannot maintain consistency of module dependency graph.
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If you know a workaround, please let me know.
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***M-C-d on a function or type cannot display it but the top of the page is displayed
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For instance, "open" on Mac removes "#anchor" from the "file:///" URL. So, the top of the file is displayed. Please use C-uM-C-d as workaround.
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5
doc/copyright.piki
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5
doc/copyright.piki
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@ -0,0 +1,5 @@
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*Copyright and license
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Copyright of this package belongs to ["IIJ Innovation Institute Inc" http://www.iij-ii.co.jp/en/].
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This package is available under BSD3 license.
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215
doc/emacs.piki
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215
doc/emacs.piki
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@ -0,0 +1,215 @@
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* Usage of Emacs front-end
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** Key bindings
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?M-C-i
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!Completes a name of keyword, module, class, function, types, language extensions, GHC flags, etc.
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?M-/
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!Completes a name of local symbol.
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?M-t
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!Inserts template. In the beginning of a buffer, "module Foo where" is inserted. On the function without signature, inferred type is inserted. On a symbol "foo" without definition, "foo = undefined" is inserted or a proper module is imported. C-uM-t inserts a hole in this case. On a variable, the case is split. When checking with hlint, original code is replaced with hlint's suggestion if possible.
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?M-C-d
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!Browses the local document with your browser. On a module import line, the document of the module is browsed. On a function or type, its document is browsed.
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?C-uM-C-d
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!Browses the Hackage document of the module with your browser.
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?M-C-m
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!Loads information of symbols for modules in the current buffer. If you add a new line to import a module, type this. The idle timer executes this command anyway.
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?C-cC-h
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!Query somthing at the cursor for hoogle.
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?C-xC-s
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!Saves the buffer if necessary and runs syntax check.
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?C-cC-c
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!Toggle GHC and Hlint for syntax check. GHC is used for initial time.
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?M-n
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!Goes to the next warning or error.
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?M-p
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!Goes to the previous warning or error.
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?M-?
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!Displays the warning/error message in the current line.
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?C-cC-i
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!Displays the info of this expression in another window.
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?C-cC-t
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!Displays the type of this expression in the minibuffer. Type C-cC-t multiple time to enlarge the expression.
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?C-cC-a
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!Selects one of possible cases.
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?C-cC-f
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!Replaces a hole with user-typed functions followed by holes.
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?C-cC-e
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!Displays the expanded Template Haskell.
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?C-cC-m
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!Insert "import Module" for the function at the cursor.
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?M-s
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!Sort and merge import statements in the region.
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?C-cC-j
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!In the beginning of the buffer, errors of other files are displayed. Typing C-cC-j on the errors jumps to the fist file of the error sources.
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?C-cC-k
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!Kill the ghc-modi subprocess for this project. If you install dependency packages, this command should be executed to reflect that change.
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?C-c<
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!Make the indentation of the region shallower.
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?C-c>
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!Make the indentation of the region deeper.
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** Resolving import hell
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Here is an example story not to type "import Foo" when
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you write a Haskell program.
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Type the following signature.
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Note that "ByteString" can be completed with M-C-i.
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>|
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foo :: [ByteString] -> [ByteString] -> [ByteString]
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C-xC-s highlights the signature.
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Typing M-t on the line results in:
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>|
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import Data.ByteString (ByteString)
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foo :: [ByteString] -> [ByteString] -> [ByteString]
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foo = undefined
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Type M-C-m to load symbols of Data.ByteString.
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Then edit the body of "foo".
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Note that "append" can be completed with M-C-i.
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>|
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import Data.ByteString (ByteString)
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foo :: [ByteString] -> [ByteString] -> [ByteString]
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foo bs1 bs2 = B.append <$> bs1 <*> bs2
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C-xC-s highlights the body.
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Type M-t to get:
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>|
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import Data.ByteString (ByteString)
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import Control.Applicative ((<*>))
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import Control.Applicative ((<$>))
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import qualified Data.ByteString as B
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foo :: [ByteString] -> [ByteString] -> [ByteString]
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foo bs1 bs2 = B.append <$> bs1 <*> bs2
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Now select a region for import statements (for instance,
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move the cursor, type C-SPC, and move the cursor) then
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type M-s.
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>|
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import Control.Applicative ((<$>), (<*>))
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import Data.ByteString (ByteString)
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import qualified Data.ByteString as B
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foo :: [ByteString] -> [ByteString] -> [ByteString]
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foo bs1 bs2 = B.append <$> bs1 <*> bs2
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**Type holes
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Consider the following broken example:
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foo :: [a -> a] -> a -> a
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foo xs = foldr bar id xs
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where
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bar = (:)
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C-xC-s highlights the 2nd line. C-c? displays the following:
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>|
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Couldn't match type `[a -> a]' with `a -> a'
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Expected type: (a -> a) -> (a -> a) -> a -> a
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Actual type: (a -> a) -> [a -> a] -> [a -> a]
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...
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Even in this situation, C-cC-t on 'id' displays 'a -> a' in the minibuffer. GHC's -fdefer-type-errors enables this magic.
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Also, you can make use of GHC's hole. Inserting "_" before "bar" and typing C-xC-s results in highlighting the second line again:
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>|
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foo :: [a -> a] -> a -> a
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foo xs = foldr _bar id xs
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where
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bar = (:)
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C-c? displays:
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>|
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Found hole `_bar' with type: (a -> a) -> (a -> a) -> a -> a
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Where: `a' is a rigid type variable bound by
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the type signature for foo :: [a -> a] -> a -> a
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at /Users/kazu/c.hs:3:8
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Relevant bindings include
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bar :: forall a. a -> [a] -> [a] (bound at /Users/kazu/c.hs:6:5)
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xs :: [a -> a] (bound at /Users/kazu/c.hs:4:5)
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foo :: [a -> a] -> a -> a (bound at /Users/kazu/c.hs:4:1)
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...
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**More type holes
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Suppose you have:
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>|
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filterNothing :: [Maybe a] -> [a]
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Typing M-t gets:
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>|
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filterNothing :: [Maybe a] -> [a]
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filterNothing = undefined
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On the other hand, typing C-uM-t gets:
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>|
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filterNothing :: [Maybe a] -> [a]
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filterNothing xs = _body
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Then, C-xC-s refreshes highlightings. When you type C-cC-f on "_body" and
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type "filter" in the minibuffer, you get:
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>|
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filterNothing :: [Maybe a] -> [a]
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filterNothing xs = filter _body_1 _body_2
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** Case handling
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Suppose you have:
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>|
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f :: [a] -> a
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f x = _f_body
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Typing M-t on "x" splits cases as follows:
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>|
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f :: [a] -> a
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f [] = _f_body
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f (x:xs) = _f_body
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|<
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Suppose you have:
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>|
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f :: a -> Maybe a
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f x = _f_body
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Typing C-cC-a on "_f_body" and selecting one of possible cases in another window results in:
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>|
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f :: a -> Maybe a
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f x = Nothing
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38
doc/ghc-mod.piki
Normal file
38
doc/ghc-mod.piki
Normal file
@ -0,0 +1,38 @@
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*The ghc-mod command
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?ghc-mod list
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!Displays a list of modules
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?ghc-mod lang
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!Displays a list of language extensions
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?ghc-mod flag
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!Displays a list of GHC flags
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?ghc-mod browse \[<package>:\]<module>
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!Displays symbols of <module>
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?ghc-mod check <HaskellFile>
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!Checks syntax with GHC
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?ghc-mod expand <HaskellFile>
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!Expands Template Haskell
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?ghc-mod debug <HaskellFile>
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!Displays debug information
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?ghc-mod info <HaskellFile> <module> <expression>
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!Displays information about the expression
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?ghc-mod type <HaskellFile> <module> <line-no> <column-no>
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!Displays the types of all expressions including the expression
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?ghc-mod find <symbol>
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!Finds all module names exporting <symbol>
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?ghc-mod lint <HaskellFile>
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!Checks synstax with Hlint
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?ghc-mod root <HaskellFile>
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!Finds the root directory for the Haskell file
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?ghc-mod doc <module>
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!Finds the html document for the module
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?ghc-mod boot
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!Displays boot information for Emacs front-end
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?ghc-mod version
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!Displays the version of ghc-mod
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?ghc-mod help
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!Displays help messages
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<module> for "info" and "type" is not used, anything is OK.
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It is necessary to maintain backward compatibility.
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48
doc/ghc-modi.piki
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48
doc/ghc-modi.piki
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*The ghc-modi command
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** Example
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>|
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% ghc-modi
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check Foo.hs
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Foo.hs:7:15:Not in scope: `B.append'
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OK
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bye
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NG quit
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%
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|<
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** Commands
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? check <HaskellFile>
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! Checks syntax with GHC
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? find <symbol>
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! Finds all module names exporting <symbol>
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? info <HaskellFile> <expr>
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! Displays information about the expression
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? type <HaskellFile> <line> <column>
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! Displays the types of all expressions including the expression
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? lint \[hlint options\] <HaskellFile>
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! Checks synstax with Hlint
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? boot
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! Displays boot information for Emacs front-end
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? browse \[<package>:\]<module>
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! Displays symbols of <module>
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? quit (or empty string)
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! Terminate ghc-modi
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** Options
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Option should be the form of Haskell's list of String (\[String\]).
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Here is an example:
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>|
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lint ["--ignore=Use camelCase", "--ignore=Eta reduce"] Foo.hs
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|<
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** Session separators
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?OK
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! The session succeeded.
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?NG <error message>
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! The session fails. ghc-modi gets finished.
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3
doc/history.piki
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3
doc/history.piki
Normal file
@ -0,0 +1,3 @@
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*History
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Please see [ChangeLog https://github.com/kazu-yamamoto/ghc-mod/blob/master/ChangeLog].
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26
doc/index.piki
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26
doc/index.piki
Normal file
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*Happy Haskell Programming
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The ["ghc-mod command" ghc-mod.html] and ["ghc-modi command" ghc-modi.html] are backend commands to enrich Haskell programming on editors
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including Emacs, Vim, and Sublime.
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ghc-mod and ghc-modi are based on the ["ghc-mod library" http://hackage.haskell.org/packages/archive/ghc-mod/latest/doc/html/Language-Haskell-GhcMod.html]
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which is a wrapper of ["GHC API" http://www.haskell.org/ghc/docs/latest/html/libraries/ghc/] and [Cabal http://hackage.haskell.org/package/Cabal].
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The ["ghc-mod package" http://hackage.haskell.org/package/ghc-mod] on Hackage
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includes
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|
the ghc-mod command, the ghc-modi command, the ghc-mod library, and
|
||||||
|
["Emacs front-end" emacs.html] (for historical reasons).
|
||||||
|
The ["source repository of ghc-mod" https://github.com/kazu-yamamoto/ghc-mod] is on github.
|
||||||
|
|
||||||
|
**Emacs
|
||||||
|
|
||||||
|
["Emacs front-end" emacs.html] is an extension of ["Haskell mode" https://github.com/haskell/haskell-mode]. They enable to complete Haskell symbols and to browse documents of modules. Syntax error highlighting with GHC/Hlint is also integrated. Moreover, you are free from "import hell".
|
||||||
|
|
||||||
|
**Vim
|
||||||
|
|
||||||
|
-[ghcmod-vim https://github.com/eagletmt/ghcmod-vim]
|
||||||
|
-[syntastic https://github.com/scrooloose/syntastic]
|
||||||
|
|
||||||
|
**Sublime
|
||||||
|
|
||||||
|
-[SublimeHaskell https://github.com/SublimeHaskell/SublimeHaskell]
|
||||||
|
|
||||||
28
doc/install.piki
Normal file
28
doc/install.piki
Normal file
@ -0,0 +1,28 @@
|
|||||||
|
*Installing "ghc-mod"
|
||||||
|
|
||||||
|
This page assumes that you are a Haskell programmer and you know the "cabal" command well.
|
||||||
|
|
||||||
|
**Installing the ghc-mod package
|
||||||
|
|
||||||
|
First of all, update Cabal's database:
|
||||||
|
|
||||||
|
>|
|
||||||
|
% cabal update
|
||||||
|
|<
|
||||||
|
|
||||||
|
Now install "ghc-mod":
|
||||||
|
|
||||||
|
>|
|
||||||
|
% cabal install ghc-mod
|
||||||
|
|<
|
||||||
|
|
||||||
|
This command installs the followings:
|
||||||
|
|
||||||
|
?~/.cabal/bin/ghc-mod
|
||||||
|
!The ghc-mod commnad
|
||||||
|
?~/.cabal/bin/ghc-modi
|
||||||
|
!The ghc-modi commnad
|
||||||
|
?~/.cabal/lib/ghc-mod-x.y.z/*
|
||||||
|
!The ghc-mod library
|
||||||
|
?~/.cabal/share/ghc-mod-x.y.z/ghc*.el
|
||||||
|
!Elisp files to extend Haskell mode
|
||||||
67
doc/preparation.piki
Normal file
67
doc/preparation.piki
Normal file
@ -0,0 +1,67 @@
|
|||||||
|
* Preparing Emacs front-end
|
||||||
|
|
||||||
|
**Downloading
|
||||||
|
|
||||||
|
Please use *stable* [MELPA http://melpa-stable.milkbox.net/] to download Emacs front-end. So, your "~/.emacs" should be:
|
||||||
|
|
||||||
|
>|
|
||||||
|
(require 'package)
|
||||||
|
(add-to-list 'package-archives
|
||||||
|
'("melpa" . "http://melpa-stable.milkbox.net/packages/"))
|
||||||
|
(package-initialize)
|
||||||
|
|<
|
||||||
|
|
||||||
|
The package name is "ghc".
|
||||||
|
Please don't forget ["install the latest cabal command" install.html].
|
||||||
|
|
||||||
|
**Configuring "~/.emacs.el"
|
||||||
|
|
||||||
|
Then, put the followings to your "~/.emacs.el" or "~/.emacs.d/init.el":
|
||||||
|
|
||||||
|
>|
|
||||||
|
(autoload 'ghc-init "ghc" nil t)
|
||||||
|
(autoload 'ghc-debug "ghc" nil t)
|
||||||
|
(add-hook 'haskell-mode-hook (lambda () (ghc-init)))
|
||||||
|
|<
|
||||||
|
|
||||||
|
IMPORTANT: if your haskell-mode-hook includes (flymake-mode), please remove it.
|
||||||
|
|
||||||
|
**Testing
|
||||||
|
|
||||||
|
Executes Emacs and opens a Haskell file by C-xC-f. And try to complete any keywords by M-C-i.
|
||||||
|
|
||||||
|
**Debugging
|
||||||
|
|
||||||
|
ghc-mod/ghc-modi must be compiled by GHC which you are actually using from Emacs. The version of Emacs front-end and ghc-mod/ghc-modi must be the same. To confirm this, type M-x ghc-debug.
|
||||||
|
|
||||||
|
>|
|
||||||
|
Path: check if you are using intended programs.
|
||||||
|
ghc.el path: /Users/kazu/work/ghc-mod/elisp/ghc.el
|
||||||
|
ghc-mod path: /Users/kazu/Library/Haskell/bin/ghc-mod
|
||||||
|
ghc-modi path: /Users/kazu/Library/Haskell/bin/ghc-modi
|
||||||
|
ghc path: /usr/local/ghc-7.8/bin/ghc
|
||||||
|
|
||||||
|
Version: all versions must be the same.
|
||||||
|
ghc.el version 4.1.0
|
||||||
|
ghc-mod version 4.1.0 compiled by GHC 7.8.2
|
||||||
|
ghc-modi version 4.1.0 compiled by GHC 7.8.2
|
||||||
|
The Glorious Glasgow Haskell Compilation System, version 7.8.2
|
||||||
|
|<
|
||||||
|
|
||||||
|
If you put (setq ghc-debug t) to your ".emacs", you can watch the communication between Emacs front-end and ghc-modi in the "*GHC Debug*" buffer.
|
||||||
|
|
||||||
|
**Customizing
|
||||||
|
|
||||||
|
If you want to specify GHC options from Emacs, set "ghc-ghc-options".
|
||||||
|
The following is an example to specify the "-i" options to GHC.
|
||||||
|
|
||||||
|
>|
|
||||||
|
(setq ghc-ghc-options '("-idir1" "-idir2"))
|
||||||
|
|<
|
||||||
|
|
||||||
|
An example to specify HLint options:
|
||||||
|
|
||||||
|
>|
|
||||||
|
(setq ghc-hlint-options '("--ignore=Use camelCase"))
|
||||||
|
|<
|
||||||
|
|
||||||
Loading…
Reference in New Issue
Block a user